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This is a modified version of the Internet RFC suitable for machine-translating. Original version is available here: RFC8448

INFORMATIONAL
Errata Exist
Internet Engineering Task Force (IETF)                        M. Thomson
Request for Comments: 8448                                       Mozilla
Category: Informational                                     January 2019
ISSN: 2070-1721
Example Handshake Traces for TLS 1.3

Abstract

This document includes examples of TLS 1.3 handshakes. Private keys and inputs are provided so that these handshakes might be reproduced. Intermediate values, including secrets, traffic keys, and IVs, are shown so that implementations might be checked incrementally against these values.

Status of This Memo

This document is not an Internet Standards Track specification; it is published for informational purposes.

This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Not all documents approved by the IESG are candidates for any level of Internet Standard; see Section 2 of RFC 7841.

Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at https://www.rfc-editor.org/info/rfc8448.

Copyright Notice

Copyright (c) 2019 IETF Trust and the persons identified as the document authors. All rights reserved.

This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (https://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License.
Thomson                       Informational                     [Page 1]

RFC 8448                     TLS 1.3 Traces                 January 2019
Table of Contents

1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Private Keys . . . . . . . . . . . . . . . . . . . . . . . . 2
3. Simple 1-RTT Handshake . . . . . . . . . . . . . . . . . . . 3
4. Resumed 0-RTT Handshake . . . . . . . . . . . . . . . . . . . 16
5. HelloRetryRequest . . . . . . . . . . . . . . . . . . . . . . 29
6. Client Authentication . . . . . . . . . . . . . . . . . . . . 43
7. Compatibility Mode . . . . . . . . . . . . . . . . . . . . . 55
8. Security Considerations . . . . . . . . . . . . . . . . . . . 67
9. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 67
10. References . . . . . . . . . . . . . . . . . . . . . . . . . 67
10.1. Normative References . . . . . . . . . . . . . . . . . . 67
10.2. Informative References . . . . . . . . . . . . . . . . . 67
Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . . 68 Author's Address . . . . . . . . . . . . . . . . . . . . . . . . 68
1.  Introduction
TLS 1.3 [TLS13] defines a new key schedule and a number of new cryptographic operations. This document includes sample handshakes that show all intermediate values. This allows an implementation to be verified incrementally, examining inputs and outputs of each cryptographic computation independently.

A private key is included with the traces so that implementations can be checked by importing these values and verifying that the same outputs are produced.

Note: Invocations of HMAC-based Extract-and-Expand Key Derivation Function (HKDF) [RFC5869] are not labeled, but they can be identified through the use of the labels used by HKDF.
2.  Private Keys
Ephemeral private keys are shown as they are generated in the traces.

The server in most examples uses an RSA certificate with a private key of:

modulus (public): b4 bb 49 8f 82 79 30 3d 98 08 36 39 9b 36 c6 98 8c 0c 68 de 55 e1 bd b8 26 d3 90 1a 24 61 ea fd 2d e4 9a 91 d0 15 ab bc 9a 95 13 7a ce 6c 1a f1 9e aa 6a f9 8c 7c ed 43 12 09 98 e1 87 a8 0e e0 cc b0 52 4b 1b 01 8c 3e 0b 63 26 4d 44 9a 6d 38 e2 2a 5f da 43 08 46 74 80 30 53 0e f0 46 1c 8c a9 d9 ef bf ae 8e a6 d1 d0 3e 2b d1 93 ef f0 ab 9a 80 02 c4 74 28 a6 d3 5a 8d 88 d7 9f 7f 1e 3f public exponent: 01 00 01
Thomson                       Informational                     [Page 2]

RFC 8448                     TLS 1.3 Traces                 January 2019
private exponent: 04 de a7 05 d4 3a 6e a7 20 9d d8 07 21 11 a8 3c 81 e3 22 a5 92 78 b3 34 80 64 1e af 7c 0a 69 85 b8 e3 1c 44 f6 de 62 e1 b4 c2 30 9f 61 26 e7 7b 7c 41 e9 23 31 4b bf a3 88 13 05 dc 12 17 f1 6c 81 9c e5 38 e9 22 f3 69 82 8d 0e 57 19 5d 8c 84 88 46 02 07 b2 fa a7 26 bc f7 08 bb d7 db 7f 67 9f 89 34 92 fc 2a 62 2e 08 97 0a ac 44 1c e4 e0 c3 08 8d f2 5a e6 79 23 3d f8 a3 bd a2 ff 99 41

prime1: e4 35 fb 7c c8 37 37 75 6d ac ea 96 ab 7f 59 a2 cc 10 69 db
7d eb 19 0e 17 e3 3a 53 2b 27 3f 30 a3 27 aa 0a aa bc 58 cd 67 46 6a f9 84 5f ad c6 75 fe 09 4a f9 2c 4b d1 f2 c1 bc 33 dd 2e 05 15

prime2: ca bd 3b c0 e0 43 86 64 c8 d4 cc 9f 99 97 7a 94 d9 bb fe ad
8e 43 87 0a ba e3 f7 eb 8b 4e 0e ee 8a f1 d9 b4 71 9b a6 19 6c f2 cb ba ee eb f8 b3 49 0a fe 9e 9f fa 74 a8 8a a5 1f c6 45 62 93 03

exponent1: 3f 57 34 5c 27 fe 1b 68 7e 6e 76 16 27 b7 8b 1b 82 64 33
dd 76 0f a0 be a6 a6 ac f3 94 90 aa 1b 47 cd a4 86 9d 68 f5 84 dd 5b 50 29 bd 32 09 3b 82 58 66 1f e7 15 02 5e 5d 70 a4 5a 08 d3 d3 19

exponent2: 18 3d a0 13 63 bd 2f 28 85 ca cb dc 99 64 bf 47 64 f1 51
76 36 f8 64 01 28 6f 71 89 3c 52 cc fe 40 a6 c2 3d 0d 08 6b 47 c6 fb 10 d8 fd 10 41 e0 4d ef 7e 9a 40 ce 95 7c 41 77 94 e1 04 12 d1 39

coefficient: 83 9c a9 a0 85 e4 28 6b 2c 90 e4 66 99 7a 2c 68 1f 21
33 9a a3 47 78 14 e4 de c1 18 33 05 0e d5 0d d1 3c c0 38 04 8a 43 c5 9b 2a cc 41 68 89 c0 37 66 5f e5 af a6 05 96 9f 8c 01 df a5 ca 96 9d
3.  Simple 1-RTT Handshake
In this example, the simplest possible handshake is completed. The server is authenticated, but the client remains anonymous. After connecting, a few application data octets are exchanged. The server sends a session ticket that permits the use of 0-RTT data in any resumed session.

{client} create an ephemeral x25519 key pair:

private key (32 octets): 49 af 42 ba 7f 79 94 85 2d 71 3e f2 78
4b cb ca a7 91 1d e2 6a dc 56 42 cb 63 45 40 e7 ea 50 05

public key (32 octets): 99 38 1d e5 60 e4 bd 43 d2 3d 8e 43 5a 7d
ba fe b3 c0 6e 51 c1 3c ae 4d 54 13 69 1e 52 9a af 2c
Thomson                       Informational                     [Page 3]

RFC 8448                     TLS 1.3 Traces                 January 2019
{client} construct a ClientHello handshake message:

ClientHello (196 octets): 01 00 00 c0 03 03 cb 34 ec b1 e7 81 63
ba 1c 38 c6 da cb 19 6a 6d ff a2 1a 8d 99 12 ec 18 a2 ef 62 83 02 4d ec e7 00 00 06 13 01 13 03 13 02 01 00 00 91 00 00 00 0b 00 09 00 00 06 73 65 72 76 65 72 ff 01 00 01 00 00 0a 00 14 00 12 00 1d 00 17 00 18 00 19 01 00 01 01 01 02 01 03 01 04 00 23 00 00 00 33 00 26 00 24 00 1d 00 20 99 38 1d e5 60 e4 bd 43 d2 3d 8e 43 5a 7d ba fe b3 c0 6e 51 c1 3c ae 4d 54 13 69 1e 52 9a af 2c 00 2b 00 03 02 03 04 00 0d 00 20 00 1e 04 03 05 03 06 03 02 03 08 04 08 05 08 06 04 01 05 01 06 01 02 01 04 02 05 02 06 02 02 02 00 2d 00 02 01 01 00 1c 00 02 40 01

{client} send handshake record:

payload (196 octets): 01 00 00 c0 03 03 cb 34 ec b1 e7 81 63 ba
1c 38 c6 da cb 19 6a 6d ff a2 1a 8d 99 12 ec 18 a2 ef 62 83 02 4d ec e7 00 00 06 13 01 13 03 13 02 01 00 00 91 00 00 00 0b 00 09 00 00 06 73 65 72 76 65 72 ff 01 00 01 00 00 0a 00 14 00 12 00 1d 00 17 00 18 00 19 01 00 01 01 01 02 01 03 01 04 00 23 00 00 00 33 00 26 00 24 00 1d 00 20 99 38 1d e5 60 e4 bd 43 d2 3d 8e 43 5a 7d ba fe b3 c0 6e 51 c1 3c ae 4d 54 13 69 1e 52 9a af 2c 00 2b 00 03 02 03 04 00 0d 00 20 00 1e 04 03 05 03 06 03 02 03 08 04 08 05 08 06 04 01 05 01 06 01 02 01 04 02 05 02 06 02 02 02 00 2d 00 02 01 01 00 1c 00 02 40 01

complete record (201 octets): 16 03 01 00 c4 01 00 00 c0 03 03 cb
34 ec b1 e7 81 63 ba 1c 38 c6 da cb 19 6a 6d ff a2 1a 8d 99 12 ec 18 a2 ef 62 83 02 4d ec e7 00 00 06 13 01 13 03 13 02 01 00 00 91 00 00 00 0b 00 09 00 00 06 73 65 72 76 65 72 ff 01 00 01 00 00 0a 00 14 00 12 00 1d 00 17 00 18 00 19 01 00 01 01 01 02 01 03 01 04 00 23 00 00 00 33 00 26 00 24 00 1d 00 20 99 38 1d e5 60 e4 bd 43 d2 3d 8e 43 5a 7d ba fe b3 c0 6e 51 c1 3c ae 4d 54 13 69 1e 52 9a af 2c 00 2b 00 03 02 03 04 00 0d 00 20 00 1e 04 03 05 03 06 03 02 03 08 04 08 05 08 06 04 01 05 01 06 01 02 01 04 02 05 02 06 02 02 02 00 2d 00 02 01 01 00 1c 00 02 40 01

{server} extract secret "early":

salt: 0 (all zero octets)

IKM (32 octets): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

secret (32 octets): 33 ad 0a 1c 60 7e c0 3b 09 e6 cd 98 93 68 0c
e2 10 ad f3 00 aa 1f 26 60 e1 b2 2e 10 f1 70 f9 2a
Thomson                       Informational                     [Page 4]

RFC 8448                     TLS 1.3 Traces                 January 2019
{server} create an ephemeral x25519 key pair:

private key (32 octets): b1 58 0e ea df 6d d5 89 b8 ef 4f 2d 56
52 57 8c c8 10 e9 98 01 91 ec 8d 05 83 08 ce a2 16 a2 1e

public key (32 octets): c9 82 88 76 11 20 95 fe 66 76 2b db f7 c6
72 e1 56 d6 cc 25 3b 83 3d f1 dd 69 b1 b0 4e 75 1f 0f

{server} construct a ServerHello handshake message:

ServerHello (90 octets): 02 00 00 56 03 03 a6 af 06 a4 12 18 60
dc 5e 6e 60 24 9c d3 4c 95 93 0c 8a c5 cb 14 34 da c1 55 77 2e d3 e2 69 28 00 13 01 00 00 2e 00 33 00 24 00 1d 00 20 c9 82 88 76 11 20 95 fe 66 76 2b db f7 c6 72 e1 56 d6 cc 25 3b 83 3d f1 dd 69 b1 b0 4e 75 1f 0f 00 2b 00 02 03 04

{server} derive secret for handshake "tls13 derived":

PRK (32 octets): 33 ad 0a 1c 60 7e c0 3b 09 e6 cd 98 93 68 0c e2
10 ad f3 00 aa 1f 26 60 e1 b2 2e 10 f1 70 f9 2a

hash (32 octets): e3 b0 c4 42 98 fc 1c 14 9a fb f4 c8 99 6f b9 24
27 ae 41 e4 64 9b 93 4c a4 95 99 1b 78 52 b8 55

info (49 octets): 00 20 0d 74 6c 73 31 33 20 64 65 72 69 76 65 64
20 e3 b0 c4 42 98 fc 1c 14 9a fb f4 c8 99 6f b9 24 27 ae 41 e4 64 9b 93 4c a4 95 99 1b 78 52 b8 55

expanded (32 octets): 6f 26 15 a1 08 c7 02 c5 67 8f 54 fc 9d ba
b6 97 16 c0 76 18 9c 48 25 0c eb ea c3 57 6c 36 11 ba

{server} extract secret "handshake":

salt (32 octets): 6f 26 15 a1 08 c7 02 c5 67 8f 54 fc 9d ba b6 97
16 c0 76 18 9c 48 25 0c eb ea c3 57 6c 36 11 ba

IKM (32 octets): 8b d4 05 4f b5 5b 9d 63 fd fb ac f9 f0 4b 9f 0d
35 e6 d6 3f 53 75 63 ef d4 62 72 90 0f 89 49 2d

secret (32 octets): 1d c8 26 e9 36 06 aa 6f dc 0a ad c1 2f 74 1b
01 04 6a a6 b9 9f 69 1e d2 21 a9 f0 ca 04 3f be ac

{server} derive secret "tls13 c hs traffic":

PRK (32 octets): 1d c8 26 e9 36 06 aa 6f dc 0a ad c1 2f 74 1b 01
04 6a a6 b9 9f 69 1e d2 21 a9 f0 ca 04 3f be ac




Thomson                       Informational                     [Page 5]

RFC 8448                     TLS 1.3 Traces                 January 2019
hash (32 octets): 86 0c 06 ed c0 78 58 ee 8e 78 f0 e7 42 8c 58 ed
d6 b4 3f 2c a3 e6 e9 5f 02 ed 06 3c f0 e1 ca d8

info (54 octets): 00 20 12 74 6c 73 31 33 20 63 20 68 73 20 74 72
61 66 66 69 63 20 86 0c 06 ed c0 78 58 ee 8e 78 f0 e7 42 8c 58 ed d6 b4 3f 2c a3 e6 e9 5f 02 ed 06 3c f0 e1 ca d8

expanded (32 octets): b3 ed db 12 6e 06 7f 35 a7 80 b3 ab f4 5e
2d 8f 3b 1a 95 07 38 f5 2e 96 00 74 6a 0e 27 a5 5a 21

{server} derive secret "tls13 s hs traffic":

PRK (32 octets): 1d c8 26 e9 36 06 aa 6f dc 0a ad c1 2f 74 1b 01
04 6a a6 b9 9f 69 1e d2 21 a9 f0 ca 04 3f be ac

hash (32 octets): 86 0c 06 ed c0 78 58 ee 8e 78 f0 e7 42 8c 58 ed
d6 b4 3f 2c a3 e6 e9 5f 02 ed 06 3c f0 e1 ca d8

info (54 octets): 00 20 12 74 6c 73 31 33 20 73 20 68 73 20 74 72
61 66 66 69 63 20 86 0c 06 ed c0 78 58 ee 8e 78 f0 e7 42 8c 58 ed d6 b4 3f 2c a3 e6 e9 5f 02 ed 06 3c f0 e1 ca d8

expanded (32 octets): b6 7b 7d 69 0c c1 6c 4e 75 e5 42 13 cb 2d
37 b4 e9 c9 12 bc de d9 10 5d 42 be fd 59 d3 91 ad 38

{server} derive secret for master "tls13 derived":

PRK (32 octets): 1d c8 26 e9 36 06 aa 6f dc 0a ad c1 2f 74 1b 01
04 6a a6 b9 9f 69 1e d2 21 a9 f0 ca 04 3f be ac

hash (32 octets): e3 b0 c4 42 98 fc 1c 14 9a fb f4 c8 99 6f b9 24
27 ae 41 e4 64 9b 93 4c a4 95 99 1b 78 52 b8 55

info (49 octets): 00 20 0d 74 6c 73 31 33 20 64 65 72 69 76 65 64
20 e3 b0 c4 42 98 fc 1c 14 9a fb f4 c8 99 6f b9 24 27 ae 41 e4 64 9b 93 4c a4 95 99 1b 78 52 b8 55

expanded (32 octets): 43 de 77 e0 c7 77 13 85 9a 94 4d b9 db 25
90 b5 31 90 a6 5b 3e e2 e4 f1 2d d7 a0 bb 7c e2 54 b4

{server} extract secret "master":

salt (32 octets): 43 de 77 e0 c7 77 13 85 9a 94 4d b9 db 25 90 b5
31 90 a6 5b 3e e2 e4 f1 2d d7 a0 bb 7c e2 54 b4

IKM (32 octets): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00



Thomson                       Informational                     [Page 6]

RFC 8448                     TLS 1.3 Traces                 January 2019
secret (32 octets): 18 df 06 84 3d 13 a0 8b f2 a4 49 84 4c 5f 8a
47 80 01 bc 4d 4c 62 79 84 d5 a4 1d a8 d0 40 29 19

{server} send handshake record:

payload (90 octets): 02 00 00 56 03 03 a6 af 06 a4 12 18 60 dc 5e
6e 60 24 9c d3 4c 95 93 0c 8a c5 cb 14 34 da c1 55 77 2e d3 e2 69 28 00 13 01 00 00 2e 00 33 00 24 00 1d 00 20 c9 82 88 76 11 20 95 fe 66 76 2b db f7 c6 72 e1 56 d6 cc 25 3b 83 3d f1 dd 69 b1 b0 4e 75 1f 0f 00 2b 00 02 03 04

complete record (95 octets): 16 03 03 00 5a 02 00 00 56 03 03 a6
af 06 a4 12 18 60 dc 5e 6e 60 24 9c d3 4c 95 93 0c 8a c5 cb 14 34 da c1 55 77 2e d3 e2 69 28 00 13 01 00 00 2e 00 33 00 24 00 1d 00 20 c9 82 88 76 11 20 95 fe 66 76 2b db f7 c6 72 e1 56 d6 cc 25 3b 83 3d f1 dd 69 b1 b0 4e 75 1f 0f 00 2b 00 02 03 04

{server} derive write traffic keys for handshake data:

PRK (32 octets): b6 7b 7d 69 0c c1 6c 4e 75 e5 42 13 cb 2d 37 b4
e9 c9 12 bc de d9 10 5d 42 be fd 59 d3 91 ad 38

key info (13 octets): 00 10 09 74 6c 73 31 33 20 6b 65 79 00

key expanded (16 octets): 3f ce 51 60 09 c2 17 27 d0 f2 e4 e8 6e
e4 03 bc

iv info (12 octets): 00 0c 08 74 6c 73 31 33 20 69 76 00

iv expanded (12 octets): 5d 31 3e b2 67 12 76 ee 13 00 0b 30

{server} construct an EncryptedExtensions handshake message:

EncryptedExtensions (40 octets): 08 00 00 24 00 22 00 0a 00 14 00
12 00 1d 00 17 00 18 00 19 01 00 01 01 01 02 01 03 01 04 00 1c 00 02 40 01 00 00 00 00

{server} construct a Certificate handshake message:

Certificate (445 octets): 0b 00 01 b9 00 00 01 b5 00 01 b0 30 82
01 ac 30 82 01 15 a0 03 02 01 02 02 01 02 30 0d 06 09 2a 86 48 86 f7 0d 01 01 0b 05 00 30 0e 31 0c 30 0a 06 03 55 04 03 13 03 72 73 61 30 1e 17 0d 31 36 30 37 33 30 30 31 32 33 35 39 5a 17 0d 32 36 30 37 33 30 30 31 32 33 35 39 5a 30 0e 31 0c 30 0a 06 03 55 04 03 13 03 72 73 61 30 81 9f 30 0d 06 09 2a 86 48 86 f7 0d 01 01 01 05 00 03 81 8d 00 30 81 89 02 81 81 00 b4 bb 49 8f 82 79 30 3d 98 08 36 39 9b 36 c6 98 8c 0c 68 de 55 e1 bd b8 26 d3 90 1a 24 61 ea fd 2d e4 9a 91 d0 15 ab bc 9a 95 13 7a ce 6c 1a f1 9e aa 6a f9 8c 7c ed 43 12 09 98 e1 87 a8 0e e0 cc b0 52 4b 1b 01 8c 3e 0b 63 26 4d 44 9a 6d 38 e2 2a 5f da 43 08 46 74 80 30 53 0e f0 46 1c 8c a9 d9 ef bf ae 8e a6 d1 d0 3e 2b d1 93 ef f0 ab 9a 80 02 c4 74 28 a6 d3 5a 8d 88 d7 9f 7f 1e 3f 02 03 01 00 01 a3 1a 30 18 30 09 06 03 55 1d 13 04 02 30 00 30 0b 06 03 55 1d 0f 04 04 03 02 05 a0 30 0d 06 09 2a 86 48 86 f7 0d 01 01 0b 05 00 03 81 81 00 85 aa d2 a0 e5 b9 27 6b 90 8c 65 f7 3a 72 67 17 06 18 a5 4c 5f 8a 7b 33 7d 2d f7 a5 94 36 54 17 f2 ea e8 f8 a5 8c 8f 81 72 f9 31 9c f3 6b 7f d6 c5 5b 80 f2 1a 03 01 51 56 72 60 96 fd 33 5e 5e 67 f2 db f1 02 70 2e 60 8c ca e6 be c1 fc 63 a4 2a 99 be 5c 3e b7 10 7c 3c 54 e9 b9 eb 2b d5 20 3b 1c 3b 84 e0 a8 b2 f7 59 40 9b a3 ea c9 d9 1d 40 2d cc 0c c8 f8 96 12 29 ac 91 87 b4 2b 4d e1 00 00


Thomson                       Informational                     [Page 7]

RFC 8448                     TLS 1.3 Traces                 January 2019
{server} construct a CertificateVerify handshake message:

CertificateVerify (136 octets): 0f 00 00 84 08 04 00 80 5a 74 7c
5d 88 fa 9b d2 e5 5a b0 85 a6 10 15 b7 21 1f 82 4c d4 84 14 5a b3 ff 52 f1 fd a8 47 7b 0b 7a bc 90 db 78 e2 d3 3a 5c 14 1a 07 86 53 fa 6b ef 78 0c 5e a2 48 ee aa a7 85 c4 f3 94 ca b6 d3 0b be 8d 48 59 ee 51 1f 60 29 57 b1 54 11 ac 02 76 71 45 9e 46 44 5c 9e a5 8c 18 1e 81 8e 95 b8 c3 fb 0b f3 27 84 09 d3 be 15 2a 3d a5 04 3e 06 3d da 65 cd f5 ae a2 0d 53 df ac d4 2f 74 f3

{server} calculate finished "tls13 finished":

PRK (32 octets): b6 7b 7d 69 0c c1 6c 4e 75 e5 42 13 cb 2d 37 b4
e9 c9 12 bc de d9 10 5d 42 be fd 59 d3 91 ad 38

hash (0 octets): (empty)

info (18 octets): 00 20 0e 74 6c 73 31 33 20 66 69 6e 69 73 68 65
64 00

expanded (32 octets): 00 8d 3b 66 f8 16 ea 55 9f 96 b5 37 e8 85
c3 1f c0 68 bf 49 2c 65 2f 01 f2 88 a1 d8 cd c1 9f c8

finished (32 octets): 9b 9b 14 1d 90 63 37 fb d2 cb dc e7 1d f4
de da 4a b4 2c 30 95 72 cb 7f ff ee 54 54 b7 8f 07 18

{server} construct a Finished handshake message:

Finished (36 octets): 14 00 00 20 9b 9b 14 1d 90 63 37 fb d2 cb
dc e7 1d f4 de da 4a b4 2c 30 95 72 cb 7f ff ee 54 54 b7 8f 07 18
Thomson                       Informational                     [Page 8]

RFC 8448                     TLS 1.3 Traces                 January 2019
{server} send handshake record:

payload (657 octets): 08 00 00 24 00 22 00 0a 00 14 00 12 00 1d
00 17 00 18 00 19 01 00 01 01 01 02 01 03 01 04 00 1c 00 02 40 01 00 00 00 00 0b 00 01 b9 00 00 01 b5 00 01 b0 30 82 01 ac 30 82 01 15 a0 03 02 01 02 02 01 02 30 0d 06 09 2a 86 48 86 f7 0d 01 01 0b 05 00 30 0e 31 0c 30 0a 06 03 55 04 03 13 03 72 73 61 30 1e 17 0d 31 36 30 37 33 30 30 31 32 33 35 39 5a 17 0d 32 36 30 37 33 30 30 31 32 33 35 39 5a 30 0e 31 0c 30 0a 06 03 55 04 03 13 03 72 73 61 30 81 9f 30 0d 06 09 2a 86 48 86 f7 0d 01 01 01 05 00 03 81 8d 00 30 81 89 02 81 81 00 b4 bb 49 8f 82 79 30 3d 98 08 36 39 9b 36 c6 98 8c 0c 68 de 55 e1 bd b8 26 d3 90 1a 24 61 ea fd 2d e4 9a 91 d0 15 ab bc 9a 95 13 7a ce 6c 1a f1 9e aa 6a f9 8c 7c ed 43 12 09 98 e1 87 a8 0e e0 cc b0 52 4b 1b 01 8c 3e 0b 63 26 4d 44 9a 6d 38 e2 2a 5f da 43 08 46 74 80 30 53 0e f0 46 1c 8c a9 d9 ef bf ae 8e a6 d1 d0 3e 2b d1 93 ef f0 ab 9a 80 02 c4 74 28 a6 d3 5a 8d 88 d7 9f 7f 1e 3f 02 03 01 00 01 a3 1a 30 18 30 09 06 03 55 1d 13 04 02 30 00 30 0b 06 03 55 1d 0f 04 04 03 02 05 a0 30 0d 06 09 2a 86 48 86 f7 0d 01 01 0b 05 00 03 81 81 00 85 aa d2 a0 e5 b9 27 6b 90 8c 65 f7 3a 72 67 17 06 18 a5 4c 5f 8a 7b 33 7d 2d f7 a5 94 36 54 17 f2 ea e8 f8 a5 8c 8f 81 72 f9 31 9c f3 6b 7f d6 c5 5b 80 f2 1a 03 01 51 56 72 60 96 fd 33 5e 5e 67 f2 db f1 02 70 2e 60 8c ca e6 be c1 fc 63 a4 2a 99 be 5c 3e b7 10 7c 3c 54 e9 b9 eb 2b d5 20 3b 1c 3b 84 e0 a8 b2 f7 59 40 9b a3 ea c9 d9 1d 40 2d cc 0c c8 f8 96 12 29 ac 91 87 b4 2b 4d e1 00 00 0f 00 00 84 08 04 00 80 5a 74 7c 5d 88 fa 9b d2 e5 5a b0 85 a6 10 15 b7 21 1f 82 4c d4 84 14 5a b3 ff 52 f1 fd a8 47 7b 0b 7a bc 90 db 78 e2 d3 3a 5c 14 1a 07 86 53 fa 6b ef 78 0c 5e a2 48 ee aa a7 85 c4 f3 94 ca b6 d3 0b be 8d 48 59 ee 51 1f 60 29 57 b1 54 11 ac 02 76 71 45 9e 46 44 5c 9e a5 8c 18 1e 81 8e 95 b8 c3 fb 0b f3 27 84 09 d3 be 15 2a 3d a5 04 3e 06 3d da 65 cd f5 ae a2 0d 53 df ac d4 2f 74 f3 14 00 00 20 9b 9b 14 1d 90 63 37 fb d2 cb dc e7 1d f4 de da 4a b4 2c 30 95 72 cb 7f ff ee 54 54 b7 8f 07 18

complete record (679 octets): 17 03 03 02 a2 d1 ff 33 4a 56 f5 bf
f6 59 4a 07 cc 87 b5 80 23 3f 50 0f 45 e4 89 e7 f3 3a f3 5e df 78 69 fc f4 0a a4 0a a2 b8 ea 73 f8 48 a7 ca 07 61 2e f9 f9 45 cb 96 0b 40 68 90 51 23 ea 78 b1 11 b4 29 ba 91 91 cd 05 d2 a3 89 28 0f 52 61 34 aa dc 7f c7 8c 4b 72 9d f8 28 b5 ec f7 b1 3b d9 ae fb 0e 57 f2 71 58 5b 8e a9 bb 35 5c 7c 79 02 07 16 cf b9 b1 18 3e f3 ab 20 e3 7d 57 a6 b9 d7 47 76 09 ae e6 e1 22 a4 cf 51 42 73 25 25 0c 7d 0e 50 92 89 44 4c 9b 3a 64 8f 1d 71 03 5d 2e d6 5b 0e 3c dd 0c ba e8 bf 2d 0b 22 78 12 cb b3 60 98 72 55 cc 74 41 10 c4 53 ba a4 fc d6 10 92 8d 80 98 10 e4 b7 ed 1a 8f d9 91 f0 6a a6 24 82 04 79 7e 36 a6 a7 3b 70 a2 55 9c 09 ea d6 86 94 5b a2 46 ab 66 e5 ed d8 04 4b 4c 6d e3 fc f2 a8 94 41 ac 66 27 2f d8 fb 33 0e f8 19 05 79 b3 68 45 96 c9 60 bd 59 6e ea 52 0a 56 a8 d6 50 f5 63 aa d2 74 09 96 0d ca 63 d3 e6 88 61 1e a5 e2 2f 44 15 cf 95 38 d5 1a 20 0c 27 03 42 72 96 8a 26 4e d6 54 0c 84 83 8d 89 f7 2c 24 46 1a ad 6d 26 f5 9e ca ba 9a cb bb 31 7b 66 d9 02 f4 f2 92 a3 6a c1 b6 39 c6 37 ce 34 31 17 b6 59 62 22 45 31 7b 49 ee da 0c 62 58 f1 00 d7 d9 61 ff b1 38 64 7e 92 ea 33 0f ae ea 6d fa 31 c7 a8 4d c3 bd 7e 1b 7a 6c 71 78 af 36 87 90 18 e3 f2 52 10 7f 24 3d 24 3d c7 33 9d 56 84 c8 b0 37 8b f3 02 44 da 8c 87 c8 43 f5 e5 6e b4 c5 e8 28 0a 2b 48 05 2c f9 3b 16 49 9a 66 db 7c ca 71 e4 59 94 26 f7 d4 61 e6 6f 99 88 2b d8 9f c5 08 00 be cc a6 2d 6c 74 11 6d bd 29 72 fd a1 fa 80 f8 5d f8 81 ed be 5a 37 66 89 36 b3 35 58 3b 59 91 86 dc 5c 69 18 a3 96 fa 48 a1 81 d6 b6 fa 4f 9d 62 d5 13 af bb 99 2f 2b 99 2f 67 f8 af e6 7f 76 91 3f a3 88 cb 56 30 c8 ca 01 e0 c6 5d 11 c6 6a 1e 2a c4 c8 59 77 b7 c7 a6 99 9b bf 10 dc 35 ae 69 f5 51 56 14 63 6c 0b 9b 68 c1 9e d2 e3 1c 0b 3b 66 76 30 38 eb ba 42 f3 b3 8e dc 03 99 f3 a9 f2 3f aa 63 97 8c 31 7f c9 fa 66 a7 3f 60 f0 50 4d e9 3b 5b 84 5e 27 55 92 c1 23 35 ee 34 0b bc 4f dd d5 02 78 40 16 e4 b3 be 7e f0 4d da 49 f4 b4 40 a3 0c b5 d2 af 93 98 28 fd 4a e3 79 4e 44 f9 4d f5 a6 31 ed e4 2c 17 19 bf da bf 02 53 fe 51 75 be 89 8e 75 0e dc 53 37 0d 2b


Thomson                       Informational                     [Page 9]

RFC 8448                     TLS 1.3 Traces                 January 2019
{server} derive secret "tls13 c ap traffic":

PRK (32 octets): 18 df 06 84 3d 13 a0 8b f2 a4 49 84 4c 5f 8a 47
80 01 bc 4d 4c 62 79 84 d5 a4 1d a8 d0 40 29 19

hash (32 octets): 96 08 10 2a 0f 1c cc 6d b6 25 0b 7b 7e 41 7b 1a
00 0e aa da 3d aa e4 77 7a 76 86 c9 ff 83 df 13

info (54 octets): 00 20 12 74 6c 73 31 33 20 63 20 61 70 20 74 72
61 66 66 69 63 20 96 08 10 2a 0f 1c cc 6d b6 25 0b 7b 7e 41 7b 1a 00 0e aa da 3d aa e4 77 7a 76 86 c9 ff 83 df 13

expanded (32 octets): 9e 40 64 6c e7 9a 7f 9d c0 5a f8 88 9b ce
65 52 87 5a fa 0b 06 df 00 87 f7 92 eb b7 c1 75 04 a5

{server} derive secret "tls13 s ap traffic":

PRK (32 octets): 18 df 06 84 3d 13 a0 8b f2 a4 49 84 4c 5f 8a 47
80 01 bc 4d 4c 62 79 84 d5 a4 1d a8 d0 40 29 19

hash (32 octets): 96 08 10 2a 0f 1c cc 6d b6 25 0b 7b 7e 41 7b 1a
00 0e aa da 3d aa e4 77 7a 76 86 c9 ff 83 df 13

info (54 octets): 00 20 12 74 6c 73 31 33 20 73 20 61 70 20 74 72
61 66 66 69 63 20 96 08 10 2a 0f 1c cc 6d b6 25 0b 7b 7e 41 7b 1a 00 0e aa da 3d aa e4 77 7a 76 86 c9 ff 83 df 13



Thomson                       Informational                    [Page 10]

RFC 8448                     TLS 1.3 Traces                 January 2019
expanded (32 octets): a1 1a f9 f0 55 31 f8 56 ad 47 11 6b 45 a9
50 32 82 04 b4 f4 4b fb 6b 3a 4b 4f 1f 3f cb 63 16 43

{server} derive secret "tls13 exp master":

PRK (32 octets): 18 df 06 84 3d 13 a0 8b f2 a4 49 84 4c 5f 8a 47
80 01 bc 4d 4c 62 79 84 d5 a4 1d a8 d0 40 29 19

hash (32 octets): 96 08 10 2a 0f 1c cc 6d b6 25 0b 7b 7e 41 7b 1a
00 0e aa da 3d aa e4 77 7a 76 86 c9 ff 83 df 13

info (52 octets): 00 20 10 74 6c 73 31 33 20 65 78 70 20 6d 61 73
74 65 72 20 96 08 10 2a 0f 1c cc 6d b6 25 0b 7b 7e 41 7b 1a 00 0e aa da 3d aa e4 77 7a 76 86 c9 ff 83 df 13

expanded (32 octets): fe 22 f8 81 17 6e da 18 eb 8f 44 52 9e 67
92 c5 0c 9a 3f 89 45 2f 68 d8 ae 31 1b 43 09 d3 cf 50

{server} derive write traffic keys for application data:

PRK (32 octets): a1 1a f9 f0 55 31 f8 56 ad 47 11 6b 45 a9 50 32
82 04 b4 f4 4b fb 6b 3a 4b 4f 1f 3f cb 63 16 43

key info (13 octets): 00 10 09 74 6c 73 31 33 20 6b 65 79 00

key expanded (16 octets): 9f 02 28 3b 6c 9c 07 ef c2 6b b9 f2 ac
92 e3 56

iv info (12 octets): 00 0c 08 74 6c 73 31 33 20 69 76 00

iv expanded (12 octets): cf 78 2b 88 dd 83 54 9a ad f1 e9 84

{server} derive read traffic keys for handshake data:

PRK (32 octets): b3 ed db 12 6e 06 7f 35 a7 80 b3 ab f4 5e 2d 8f
3b 1a 95 07 38 f5 2e 96 00 74 6a 0e 27 a5 5a 21

key info (13 octets): 00 10 09 74 6c 73 31 33 20 6b 65 79 00

key expanded (16 octets): db fa a6 93 d1 76 2c 5b 66 6a f5 d9 50
25 8d 01

iv info (12 octets): 00 0c 08 74 6c 73 31 33 20 69 76 00

iv expanded (12 octets): 5b d3 c7 1b 83 6e 0b 76 bb 73 26 5f

{client} extract secret "early" (same as server early secret) {client} derive secret for handshake "tls13 derived":



Thomson                       Informational                    [Page 11]

RFC 8448                     TLS 1.3 Traces                 January 2019
PRK (32 octets): 33 ad 0a 1c 60 7e c0 3b 09 e6 cd 98 93 68 0c e2
10 ad f3 00 aa 1f 26 60 e1 b2 2e 10 f1 70 f9 2a

hash (32 octets): e3 b0 c4 42 98 fc 1c 14 9a fb f4 c8 99 6f b9 24
27 ae 41 e4 64 9b 93 4c a4 95 99 1b 78 52 b8 55

info (49 octets): 00 20 0d 74 6c 73 31 33 20 64 65 72 69 76 65 64
20 e3 b0 c4 42 98 fc 1c 14 9a fb f4 c8 99 6f b9 24 27 ae 41 e4 64 9b 93 4c a4 95 99 1b 78 52 b8 55

expanded (32 octets): 6f 26 15 a1 08 c7 02 c5 67 8f 54 fc 9d ba
b6 97 16 c0 76 18 9c 48 25 0c eb ea c3 57 6c 36 11 ba

{client} extract secret "handshake" (same as server handshake
secret)

{client} derive secret "tls13 c hs traffic" (same as server)

{client} derive secret "tls13 s hs traffic" (same as server)

{client} derive secret for master "tls13 derived" (same as server)

{client} extract secret "master" (same as server master secret)

{client} derive read traffic keys for handshake data (same as server
handshake data write traffic keys)

{client} calculate finished "tls13 finished" (same as server)

{client} derive secret "tls13 c ap traffic" (same as server)

{client} derive secret "tls13 s ap traffic" (same as server)

{client} derive secret "tls13 exp master" (same as server)

{client} derive write traffic keys for handshake data (same as
server handshake data read traffic keys)

{client} derive read traffic keys for application data (same as
server application data write traffic keys)

{client} calculate finished "tls13 finished":

PRK (32 octets): b3 ed db 12 6e 06 7f 35 a7 80 b3 ab f4 5e 2d 8f
3b 1a 95 07 38 f5 2e 96 00 74 6a 0e 27 a5 5a 21



Thomson                       Informational                    [Page 12]

RFC 8448                     TLS 1.3 Traces                 January 2019
hash (0 octets): (empty)

info (18 octets): 00 20 0e 74 6c 73 31 33 20 66 69 6e 69 73 68 65
64 00

expanded (32 octets): b8 0a d0 10 15 fb 2f 0b d6 5f f7 d4 da 5d
6b f8 3f 84 82 1d 1f 87 fd c7 d3 c7 5b 5a 7b 42 d9 c4

finished (32 octets): a8 ec 43 6d 67 76 34 ae 52 5a c1 fc eb e1
1a 03 9e c1 76 94 fa c6 e9 85 27 b6 42 f2 ed d5 ce 61

{client} construct a Finished handshake message:

Finished (36 octets): 14 00 00 20 a8 ec 43 6d 67 76 34 ae 52 5a
c1 fc eb e1 1a 03 9e c1 76 94 fa c6 e9 85 27 b6 42 f2 ed d5 ce 61

{client} send handshake record:

payload (36 octets): 14 00 00 20 a8 ec 43 6d 67 76 34 ae 52 5a c1
fc eb e1 1a 03 9e c1 76 94 fa c6 e9 85 27 b6 42 f2 ed d5 ce 61

complete record (58 octets): 17 03 03 00 35 75 ec 4d c2 38 cc e6
0b 29 80 44 a7 1e 21 9c 56 cc 77 b0 51 7f e9 b9 3c 7a 4b fc 44 d8 7f 38 f8 03 38 ac 98 fc 46 de b3 84 bd 1c ae ac ab 68 67 d7 26 c4 05 46

{client} derive write traffic keys for application data:

PRK (32 octets): 9e 40 64 6c e7 9a 7f 9d c0 5a f8 88 9b ce 65 52
87 5a fa 0b 06 df 00 87 f7 92 eb b7 c1 75 04 a5

key info (13 octets): 00 10 09 74 6c 73 31 33 20 6b 65 79 00

key expanded (16 octets): 17 42 2d da 59 6e d5 d9 ac d8 90 e3 c6
3f 50 51

iv info (12 octets): 00 0c 08 74 6c 73 31 33 20 69 76 00

iv expanded (12 octets): 5b 78 92 3d ee 08 57 90 33 e5 23 d9

{client} derive secret "tls13 res master":

PRK (32 octets): 18 df 06 84 3d 13 a0 8b f2 a4 49 84 4c 5f 8a 47
80 01 bc 4d 4c 62 79 84 d5 a4 1d a8 d0 40 29 19

hash (32 octets): 20 91 45 a9 6e e8 e2 a1 22 ff 81 00 47 cc 95 26
84 65 8d 60 49 e8 64 29 42 6d b8 7c 54 ad 14 3d


Thomson                       Informational                    [Page 13]

RFC 8448                     TLS 1.3 Traces                 January 2019
info (52 octets): 00 20 10 74 6c 73 31 33 20 72 65 73 20 6d 61 73
74 65 72 20 20 91 45 a9 6e e8 e2 a1 22 ff 81 00 47 cc 95 26 84 65 8d 60 49 e8 64 29 42 6d b8 7c 54 ad 14 3d

expanded (32 octets): 7d f2 35 f2 03 1d 2a 05 12 87 d0 2b 02 41
b0 bf da f8 6c c8 56 23 1f 2d 5a ba 46 c4 34 ec 19 6c

{server} calculate finished "tls13 finished" (same as client)

{server} derive read traffic keys for application data (same as
client application data write traffic keys)

{server} derive secret "tls13 res master" (same as client)

{server} generate resumption secret "tls13 resumption":

PRK (32 octets): 7d f2 35 f2 03 1d 2a 05 12 87 d0 2b 02 41 b0 bf
da f8 6c c8 56 23 1f 2d 5a ba 46 c4 34 ec 19 6c

hash (2 octets): 00 00

info (22 octets): 00 20 10 74 6c 73 31 33 20 72 65 73 75 6d 70 74
69 6f 6e 02 00 00

expanded (32 octets): 4e cd 0e b6 ec 3b 4d 87 f5 d6 02 8f 92 2c
a4 c5 85 1a 27 7f d4 13 11 c9 e6 2d 2c 94 92 e1 c4 f3

{server} construct a NewSessionTicket handshake message:

NewSessionTicket (205 octets): 04 00 00 c9 00 00 00 1e fa d6 aa
c5 02 00 00 00 b2 2c 03 5d 82 93 59 ee 5f f7 af 4e c9 00 00 00 00 26 2a 64 94 dc 48 6d 2c 8a 34 cb 33 fa 90 bf 1b 00 70 ad 3c 49 88 83 c9 36 7c 09 a2 be 78 5a bc 55 cd 22 60 97 a3 a9 82 11 72 83 f8 2a 03 a1 43 ef d3 ff 5d d3 6d 64 e8 61 be 7f d6 1d 28 27 db 27 9c ce 14 50 77 d4 54 a3 66 4d 4e 6d a4 d2 9e e0 37 25 a6 a4 da fc d0 fc 67 d2 ae a7 05 29 51 3e 3d a2 67 7f a5 90 6c 5b 3f 7d 8f 92 f2 28 bd a4 0d da 72 14 70 f9 fb f2 97 b5 ae a6 17 64 6f ac 5c 03 27 2e 97 07 27 c6 21 a7 91 41 ef 5f 7d e6 50 5e 5b fb c3 88 e9 33 43 69 40 93 93 4a e4 d3 57 00 08 00 2a 00 04 00 00 04 00

{server} send handshake record:

payload (205 octets): 04 00 00 c9 00 00 00 1e fa d6 aa c5 02 00
00 00 b2 2c 03 5d 82 93 59 ee 5f f7 af 4e c9 00 00 00 00 26 2a 64 94 dc 48 6d 2c 8a 34 cb 33 fa 90 bf 1b 00 70 ad 3c 49 88 83 c9 36 7c 09 a2 be 78 5a bc 55 cd 22 60 97 a3 a9 82 11 72 83 f8 2a 03 a1 43 ef d3 ff 5d d3 6d 64 e8 61 be 7f d6 1d 28 27 db 27 9c ce 14 50 77 d4 54 a3 66 4d 4e 6d a4 d2 9e e0 37 25 a6 a4 da fc d0 fc 67 d2 ae a7 05 29 51 3e 3d a2 67 7f a5 90 6c 5b 3f 7d 8f 92 f2 28 bd a4 0d da 72 14 70 f9 fb f2 97 b5 ae a6 17 64 6f ac 5c 03 27 2e 97 07 27 c6 21 a7 91 41 ef 5f 7d e6 50 5e 5b fb c3 88 e9 33 43 69 40 93 93 4a e4 d3 57 00 08 00 2a 00 04 00 00 04 00


Thomson                       Informational                    [Page 14]

RFC 8448                     TLS 1.3 Traces                 January 2019
complete record (227 octets): 17 03 03 00 de 3a 6b 8f 90 41 4a 97
d6 95 9c 34 87 68 0d e5 13 4a 2b 24 0e 6c ff ac 11 6e 95 d4 1d 6a f8 f6 b5 80 dc f3 d1 1d 63 c7 58 db 28 9a 01 59 40 25 2f 55 71 3e 06 1d c1 3e 07 88 91 a3 8e fb cf 57 53 ad 8e f1 70 ad 3c 73 53 d1 6d 9d a7 73 b9 ca 7f 2b 9f a1 b6 c0 d4 a3 d0 3f 75 e0 9c 30 ba 1e 62 97 2a c4 6f 75 f7 b9 81 be 63 43 9b 29 99 ce 13 06 46 15 13 98 91 d5 e4 c5 b4 06 f1 6e 3f c1 81 a7 7c a4 75 84 00 25 db 2f 0a 77 f8 1b 5a b0 5b 94 c0 13 46 75 5f 69 23 2c 86 51 9d 86 cb ee ac 87 aa c3 47 d1 43 f9 60 5d 64 f6 50 db 4d 02 3e 70 e9 52 ca 49 fe 51 37 12 1c 74 bc 26 97 68 7e 24 87 46 d6 df 35 30 05 f3 bc e1 86 96 12 9c 81 53 55 6b 3b 6c 67 79 b3 7b f1 59 85 68 4f

{client} generate resumption secret "tls13 resumption" (same as
server)

{client} send application_data record:

payload (50 octets): 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e
0f 10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f 20 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f 30 31

complete record (72 octets): 17 03 03 00 43 a2 3f 70 54 b6 2c 94
d0 af fa fe 82 28 ba 55 cb ef ac ea 42 f9 14 aa 66 bc ab 3f 2b 98 19 a8 a5 b4 6b 39 5b d5 4a 9a 20 44 1e 2b 62 97 4e 1f 5a 62 92 a2 97 70 14 bd 1e 3d ea e6 3a ee bb 21 69 49 15 e4

{server} send application_data record:

payload (50 octets): 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e
0f 10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f 20 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f 30 31

complete record (72 octets): 17 03 03 00 43 2e 93 7e 11 ef 4a c7
40 e5 38 ad 36 00 5f c4 a4 69 32 fc 32 25 d0 5f 82 aa 1b 36 e3 0e fa f9 7d 90 e6 df fc 60 2d cb 50 1a 59 a8 fc c4 9c 4b f2 e5 f0 a2 1c 00 47 c2 ab f3 32 54 0d d0 32 e1 67 c2 95 5d

{client} send alert record:

payload (2 octets): 01 00 complete record (24 octets): 17 03 03 00 13 c9 87 27 60 65 56 66


Thomson                       Informational                    [Page 15]

RFC 8448                     TLS 1.3 Traces                 January 2019
b7 4d 7f f1 15 3e fd 6d b6 d0 b0 e3

{server} send alert record:

payload (2 octets): 01 00

complete record (24 octets): 17 03 03 00 13 b5 8f d6 71 66 eb f5
99 d2 47 20 cf be 7e fa 7a 88 64 a9
4.  Resumed 0-RTT Handshake
This handshake resumes from the handshake in Section 3. Since the server provided a session ticket that permitted 0-RTT, and the client is configured for 0-RTT, the client is able to send 0-RTT data.

Note: The PSK binder uses the same construction as Finished and so is labeled as finished here.

{client} create an ephemeral x25519 key pair:

private key (32 octets): bf f9 11 88 28 38 46 dd 6a 21 34 ef 71
80 ca 2b 0b 14 fb 10 dc e7 07 b5 09 8c 0d dd c8 13 b2 df

public key (32 octets): e4 ff b6 8a c0 5f 8d 96 c9 9d a2 66 98 34
6c 6b e1 64 82 ba dd da fe 05 1a 66 b4 f1 8d 66 8f 0b

{client} extract secret "early":

salt: 0 (all zero octets)

IKM (32 octets): 4e cd 0e b6 ec 3b 4d 87 f5 d6 02 8f 92 2c a4 c5
85 1a 27 7f d4 13 11 c9 e6 2d 2c 94 92 e1 c4 f3

secret (32 octets): 9b 21 88 e9 b2 fc 6d 64 d7 1d c3 29 90 0e 20
bb 41 91 50 00 f6 78 aa 83 9c bb 79 7c b7 d8 33 2c

{client} construct a ClientHello handshake message:

ClientHello (477 octets): 01 00 01 fc 03 03 1b c3 ce b6 bb e3 9c
ff 93 83 55 b5 a5 0a db 6d b2 1b 7a 6a f6 49 d7 b4 bc 41 9d 78 76 48 7d 95 00 00 06 13 01 13 03 13 02 01 00 01 cd 00 00 00 0b 00 09 00 00 06 73 65 72 76 65 72 ff 01 00 01 00 00 0a 00 14 00 12 00 1d 00 17 00 18 00 19 01 00 01 01 01 02 01 03 01 04 00 33 00 26 00 24 00 1d 00 20 e4 ff b6 8a c0 5f 8d 96 c9 9d a2 66 98 34 6c 6b e1 64 82 ba dd da fe 05 1a 66 b4 f1 8d 66 8f 0b 00 2a 00 00 00 2b 00 03 02 03 04 00 0d 00 20 00 1e 04 03 05 03 06 03 02 03 08 04 08 05 08 06 04 01 05 01 06 01 02 01 04 02 05 02 06 02 02 02 00 2d 00 02 01 01 00 1c 00 02 40 01 00 15 00 57 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 29 00 dd 00 b8 00 b2 2c 03 5d 82 93 59 ee 5f f7 af 4e c9 00 00 00 00 26 2a 64 94 dc 48 6d 2c 8a 34 cb 33 fa 90 bf 1b 00 70 ad 3c 49 88 83 c9 36 7c 09 a2 be 78 5a bc 55 cd 22 60 97 a3 a9 82 11 72 83 f8 2a 03 a1 43 ef d3 ff 5d d3 6d 64 e8 61 be 7f d6 1d 28 27 db 27 9c ce 14 50 77 d4 54 a3 66 4d 4e 6d a4 d2 9e e0 37 25 a6 a4 da fc d0 fc 67 d2 ae a7 05 29 51 3e 3d a2 67 7f a5 90 6c 5b 3f 7d 8f 92 f2 28 bd a4 0d da 72 14 70 f9 fb f2 97 b5 ae a6 17 64 6f ac 5c 03 27 2e 97 07 27 c6 21 a7 91 41 ef 5f 7d e6 50 5e 5b fb c3 88 e9 33 43 69 40 93 93 4a e4 d3 57 fa d6 aa cb


Thomson                       Informational                    [Page 16]

RFC 8448                     TLS 1.3 Traces                 January 2019
{client} calculate PSK binder:

ClientHello prefix (477 octets): 01 00 01 fc 03 03 1b c3 ce b6 bb
e3 9c ff 93 83 55 b5 a5 0a db 6d b2 1b 7a 6a f6 49 d7 b4 bc 41 9d 78 76 48 7d 95 00 00 06 13 01 13 03 13 02 01 00 01 cd 00 00 00 0b 00 09 00 00 06 73 65 72 76 65 72 ff 01 00 01 00 00 0a 00 14 00 12 00 1d 00 17 00 18 00 19 01 00 01 01 01 02 01 03 01 04 00 33 00 26 00 24 00 1d 00 20 e4 ff b6 8a c0 5f 8d 96 c9 9d a2 66 98 34 6c 6b e1 64 82 ba dd da fe 05 1a 66 b4 f1 8d 66 8f 0b 00 2a 00 00 00 2b 00 03 02 03 04 00 0d 00 20 00 1e 04 03 05 03 06 03 02 03 08 04 08 05 08 06 04 01 05 01 06 01 02 01 04 02 05 02 06 02 02 02 00 2d 00 02 01 01 00 1c 00 02 40 01 00 15 00 57 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 29 00 dd 00 b8 00 b2 2c 03 5d 82 93 59 ee 5f f7 af 4e c9 00 00 00 00 26 2a 64 94 dc 48 6d 2c 8a 34 cb 33 fa 90 bf 1b 00 70 ad 3c 49 88 83 c9 36 7c 09 a2 be 78 5a bc 55 cd 22 60 97 a3 a9 82 11 72 83 f8 2a 03 a1 43 ef d3 ff 5d d3 6d 64 e8 61 be 7f d6 1d 28 27 db 27 9c ce 14 50 77 d4 54 a3 66 4d 4e 6d a4 d2 9e e0 37 25 a6 a4 da fc d0 fc 67 d2 ae a7 05 29 51 3e 3d a2 67 7f a5 90 6c 5b 3f 7d 8f 92 f2 28 bd a4 0d da 72 14 70 f9 fb f2 97 b5 ae a6 17 64 6f ac 5c 03 27 2e 97 07 27 c6 21 a7 91 41 ef 5f 7d e6 50 5e 5b fb c3 88 e9 33 43 69 40 93 93 4a e4 d3 57 fa d6 aa cb

binder hash (32 octets): 63 22 4b 2e 45 73 f2 d3 45 4c a8 4b 9d
00 9a 04 f6 be 9e 05 71 1a 83 96 47 3a ef a0 1e 92 4a 14

PRK (32 octets): 69 fe 13 1a 3b ba d5 d6 3c 64 ee bc c3 0e 39 5b
9d 81 07 72 6a 13 d0 74 e3 89 db c8 a4 e4 72 56


Thomson                       Informational                    [Page 17]

RFC 8448                     TLS 1.3 Traces                 January 2019
hash (0 octets): (empty)

info (18 octets): 00 20 0e 74 6c 73 31 33 20 66 69 6e 69 73 68 65
64 00

expanded (32 octets): 55 88 67 3e 72 cb 59 c8 7d 22 0c af fe 94
f2 de a9 a3 b1 60 9f 7d 50 e9 0a 48 22 7d b9 ed 7e aa

finished (32 octets): 3a dd 4f b2 d8 fd f8 22 a0 ca 3c f7 67 8e
f5 e8 8d ae 99 01 41 c5 92 4d 57 bb 6f a3 1b 9e 5f 9d

{client} send handshake record:

payload (512 octets): 01 00 01 fc 03 03 1b c3 ce b6 bb e3 9c ff
93 83 55 b5 a5 0a db 6d b2 1b 7a 6a f6 49 d7 b4 bc 41 9d 78 76 48 7d 95 00 00 06 13 01 13 03 13 02 01 00 01 cd 00 00 00 0b 00 09 00 00 06 73 65 72 76 65 72 ff 01 00 01 00 00 0a 00 14 00 12 00 1d 00 17 00 18 00 19 01 00 01 01 01 02 01 03 01 04 00 33 00 26 00 24 00 1d 00 20 e4 ff b6 8a c0 5f 8d 96 c9 9d a2 66 98 34 6c 6b e1 64 82 ba dd da fe 05 1a 66 b4 f1 8d 66 8f 0b 00 2a 00 00 00 2b 00 03 02 03 04 00 0d 00 20 00 1e 04 03 05 03 06 03 02 03 08 04 08 05 08 06 04 01 05 01 06 01 02 01 04 02 05 02 06 02 02 02 00 2d 00 02 01 01 00 1c 00 02 40 01 00 15 00 57 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 29 00 dd 00 b8 00 b2 2c 03 5d 82 93 59 ee 5f f7 af 4e c9 00 00 00 00 26 2a 64 94 dc 48 6d 2c 8a 34 cb 33 fa 90 bf 1b 00 70 ad 3c 49 88 83 c9 36 7c 09 a2 be 78 5a bc 55 cd 22 60 97 a3 a9 82 11 72 83 f8 2a 03 a1 43 ef d3 ff 5d d3 6d 64 e8 61 be 7f d6 1d 28 27 db 27 9c ce 14 50 77 d4 54 a3 66 4d 4e 6d a4 d2 9e e0 37 25 a6 a4 da fc d0 fc 67 d2 ae a7 05 29 51 3e 3d a2 67 7f a5 90 6c 5b 3f 7d 8f 92 f2 28 bd a4 0d da 72 14 70 f9 fb f2 97 b5 ae a6 17 64 6f ac 5c 03 27 2e 97 07 27 c6 21 a7 91 41 ef 5f 7d e6 50 5e 5b fb c3 88 e9 33 43 69 40 93 93 4a e4 d3 57 fa d6 aa cb 00 21 20 3a dd 4f b2 d8 fd f8 22 a0 ca 3c f7 67 8e f5 e8 8d ae 99 01 41 c5 92 4d 57 bb 6f a3 1b 9e 5f 9d

complete record (517 octets): 16 03 01 02 00 01 00 01 fc 03 03 1b
c3 ce b6 bb e3 9c ff 93 83 55 b5 a5 0a db 6d b2 1b 7a 6a f6 49 d7 b4 bc 41 9d 78 76 48 7d 95 00 00 06 13 01 13 03 13 02 01 00 01 cd 00 00 00 0b 00 09 00 00 06 73 65 72 76 65 72 ff 01 00 01 00 00 0a 00 14 00 12 00 1d 00 17 00 18 00 19 01 00 01 01 01 02 01 03 01 04 00 33 00 26 00 24 00 1d 00 20 e4 ff b6 8a c0 5f 8d 96 c9 9d a2 66 98 34 6c 6b e1 64 82 ba dd da fe 05 1a 66 b4 f1 8d 66 8f 0b 00 2a 00 00 00 2b 00 03 02 03 04 00 0d 00 20 00 1e 04 03 05 03 06 03 02 03 08 04 08 05 08 06 04 01 05 01 06 01 02 01 04 02 05 02 06 02 02 02 00 2d 00 02 01 01 00 1c 00 02 40 01 00 15 00 57 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 29 00 dd 00 b8 00 b2 2c 03 5d 82 93 59 ee 5f f7 af 4e c9 00 00 00 00 26 2a 64 94 dc 48 6d 2c 8a 34 cb 33 fa 90 bf 1b 00 70 ad 3c 49 88 83 c9 36 7c 09 a2 be 78 5a bc 55 cd 22 60 97 a3 a9 82 11 72 83 f8 2a 03 a1 43 ef d3 ff 5d d3 6d 64 e8 61 be 7f d6 1d 28 27 db 27 9c ce 14 50 77 d4 54 a3 66 4d 4e 6d a4 d2 9e e0 37 25 a6 a4 da fc d0 fc 67 d2 ae a7 05 29 51 3e 3d a2 67 7f a5 90 6c 5b 3f 7d 8f 92 f2 28 bd a4 0d da 72 14 70 f9 fb f2 97 b5 ae a6 17 64 6f ac 5c 03 27 2e 97 07 27 c6 21 a7 91 41 ef 5f 7d e6 50 5e 5b fb c3 88 e9 33 43 69 40 93 93 4a e4 d3 57 fa d6 aa cb 00 21 20 3a dd 4f b2 d8 fd f8 22 a0 ca 3c f7 67 8e f5 e8 8d ae 99 01 41 c5 92 4d 57 bb 6f a3 1b 9e 5f 9d


Thomson                       Informational                    [Page 18]

RFC 8448                     TLS 1.3 Traces                 January 2019
{client} derive secret "tls13 c e traffic":

PRK (32 octets): 9b 21 88 e9 b2 fc 6d 64 d7 1d c3 29 90 0e 20 bb
41 91 50 00 f6 78 aa 83 9c bb 79 7c b7 d8 33 2c

hash (32 octets): 08 ad 0f a0 5d 7c 72 33 b1 77 5b a2 ff 9f 4c 5b
8b 59 27 6b 7f 22 7f 13 a9 76 24 5f 5d 96 09 13

info (53 octets): 00 20 11 74 6c 73 31 33 20 63 20 65 20 74 72 61
66 66 69 63 20 08 ad 0f a0 5d 7c 72 33 b1 77 5b a2 ff 9f 4c 5b 8b 59 27 6b 7f 22 7f 13 a9 76 24 5f 5d 96 09 13

expanded (32 octets): 3f bb e6 a6 0d eb 66 c3 0a 32 79 5a ba 0e
ff 7e aa 10 10 55 86 e7 be 5c 09 67 8d 63 b6 ca ab 62

{client} derive secret "tls13 e exp master":

PRK (32 octets): 9b 21 88 e9 b2 fc 6d 64 d7 1d c3 29 90 0e 20 bb
41 91 50 00 f6 78 aa 83 9c bb 79 7c b7 d8 33 2c

hash (32 octets): 08 ad 0f a0 5d 7c 72 33 b1 77 5b a2 ff 9f 4c 5b
8b 59 27 6b 7f 22 7f 13 a9 76 24 5f 5d 96 09 13

info (54 octets): 00 20 12 74 6c 73 31 33 20 65 20 65 78 70 20 6d
61 73 74 65 72 20 08 ad 0f a0 5d 7c 72 33 b1 77 5b a2 ff 9f 4c 5b 8b 59 27 6b 7f 22 7f 13 a9 76 24 5f 5d 96 09 13

expanded (32 octets): b2 02 68 66 61 09 37 d7 42 3e 5b e9 08 62
cc f2 4c 0e 60 91 18 6d 34 f8 12 08 9f f5 be 2e f7 df



Thomson                       Informational                    [Page 19]

RFC 8448                     TLS 1.3 Traces                 January 2019
{client} derive write traffic keys for early application data:

PRK (32 octets): 3f bb e6 a6 0d eb 66 c3 0a 32 79 5a ba 0e ff 7e
aa 10 10 55 86 e7 be 5c 09 67 8d 63 b6 ca ab 62

key info (13 octets): 00 10 09 74 6c 73 31 33 20 6b 65 79 00

key expanded (16 octets): 92 02 05 a5 b7 bf 21 15 e6 fc 5c 29 42
83 4f 54

iv info (12 octets): 00 0c 08 74 6c 73 31 33 20 69 76 00

iv expanded (12 octets): 6d 47 5f 09 93 c8 e5 64 61 0d b2 b9

{client} send application_data record:

payload (6 octets): 41 42 43 44 45 46

complete record (28 octets): 17 03 03 00 17 ab 1d f4 20 e7 5c 45
7a 7c c5 d2 84 4f 76 d5 ae e4 b4 ed bf 04 9b e0

{server} extract secret "early" (same as client early secret)

{server} calculate PSK binder (same as client):

{server} create an ephemeral x25519 key pair:

private key (32 octets): de 5b 44 76 e7 b4 90 b2 65 2d 33 8a cb
f2 94 80 66 f2 55 f9 44 0e 23 b9 8f c6 98 35 29 8d c1 07

public key (32 octets): 12 17 61 ee 42 c3 33 e1 b9 e7 7b 60 dd 57
c2 05 3c d9 45 12 ab 47 f1 15 e8 6e ff 50 94 2c ea 31

{server} derive secret "tls13 c e traffic" (same as client)

{server} derive secret "tls13 e exp master" (same as client)

{server} construct a ServerHello handshake message:

ServerHello (96 octets): 02 00 00 5c 03 03 3c cf d2 de c8 90 22
27 63 47 2a e8 13 67 77 c9 d7 35 87 77 bb 66 e9 1e a5 12 24 95 f5 59 ea 2d 00 13 01 00 00 34 00 29 00 02 00 00 00 33 00 24 00 1d 00 20 12 17 61 ee 42 c3 33 e1 b9 e7 7b 60 dd 57 c2 05 3c d9 45 12 ab 47 f1 15 e8 6e ff 50 94 2c ea 31 00 2b 00 02 03 04
Thomson                       Informational                    [Page 20]

RFC 8448                     TLS 1.3 Traces                 January 2019
{server} derive secret for handshake "tls13 derived":

PRK (32 octets): 9b 21 88 e9 b2 fc 6d 64 d7 1d c3 29 90 0e 20 bb
41 91 50 00 f6 78 aa 83 9c bb 79 7c b7 d8 33 2c

hash (32 octets): e3 b0 c4 42 98 fc 1c 14 9a fb f4 c8 99 6f b9 24
27 ae 41 e4 64 9b 93 4c a4 95 99 1b 78 52 b8 55

info (49 octets): 00 20 0d 74 6c 73 31 33 20 64 65 72 69 76 65 64
20 e3 b0 c4 42 98 fc 1c 14 9a fb f4 c8 99 6f b9 24 27 ae 41 e4 64 9b 93 4c a4 95 99 1b 78 52 b8 55

expanded (32 octets): 5f 17 90 bb d8 2c 5e 7d 37 6e d2 e1 e5 2f
8e 60 38 c9 34 6d b6 1b 43 be 9a 52 f7 7e f3 99 8e 80

{server} extract secret "handshake":

salt (32 octets): 5f 17 90 bb d8 2c 5e 7d 37 6e d2 e1 e5 2f 8e 60
38 c9 34 6d b6 1b 43 be 9a 52 f7 7e f3 99 8e 80

IKM (32 octets): f4 41 94 75 6f f9 ec 9d 25 18 06 35 d6 6e a6 82
4c 6a b3 bf 17 99 77 be 37 f7 23 57 0e 7c cb 2e

secret (32 octets): 00 5c b1 12 fd 8e b4 cc c6 23 bb 88 a0 7c 64
b3 ed e1 60 53 63 fc 7d 0d f8 c7 ce 4f f0 fb 4a e6

{server} derive secret "tls13 c hs traffic":

PRK (32 octets): 00 5c b1 12 fd 8e b4 cc c6 23 bb 88 a0 7c 64 b3
ed e1 60 53 63 fc 7d 0d f8 c7 ce 4f f0 fb 4a e6

hash (32 octets): f7 36 cb 34 fe 25 e7 01 55 1b ee 6f d2 4c 1c c7
10 2a 7d af 94 05 cb 15 d9 7a af e1 6f 75 7d 03

info (54 octets): 00 20 12 74 6c 73 31 33 20 63 20 68 73 20 74 72
61 66 66 69 63 20 f7 36 cb 34 fe 25 e7 01 55 1b ee 6f d2 4c 1c c7 10 2a 7d af 94 05 cb 15 d9 7a af e1 6f 75 7d 03

expanded (32 octets): 2f aa c0 8f 85 1d 35 fe a3 60 4f cb 4d e8
2d c6 2c 9b 16 4a 70 97 4d 04 62 e2 7f 1a b2 78 70 0f

{server} derive secret "tls13 s hs traffic":

PRK (32 octets): 00 5c b1 12 fd 8e b4 cc c6 23 bb 88 a0 7c 64 b3
ed e1 60 53 63 fc 7d 0d f8 c7 ce 4f f0 fb 4a e6

hash (32 octets): f7 36 cb 34 fe 25 e7 01 55 1b ee 6f d2 4c 1c c7
10 2a 7d af 94 05 cb 15 d9 7a af e1 6f 75 7d 03


Thomson                       Informational                    [Page 21]

RFC 8448                     TLS 1.3 Traces                 January 2019
info (54 octets): 00 20 12 74 6c 73 31 33 20 73 20 68 73 20 74 72
61 66 66 69 63 20 f7 36 cb 34 fe 25 e7 01 55 1b ee 6f d2 4c 1c c7 10 2a 7d af 94 05 cb 15 d9 7a af e1 6f 75 7d 03

expanded (32 octets): fe 92 7a e2 71 31 2e 8b f0 27 5b 58 1c 54
ee f0 20 45 0d c4 ec ff aa 05 a1 a3 5d 27 51 8e 78 03

{server} derive secret for master "tls13 derived":

PRK (32 octets): 00 5c b1 12 fd 8e b4 cc c6 23 bb 88 a0 7c 64 b3
ed e1 60 53 63 fc 7d 0d f8 c7 ce 4f f0 fb 4a e6

hash (32 octets): e3 b0 c4 42 98 fc 1c 14 9a fb f4 c8 99 6f b9 24
27 ae 41 e4 64 9b 93 4c a4 95 99 1b 78 52 b8 55

info (49 octets): 00 20 0d 74 6c 73 31 33 20 64 65 72 69 76 65 64
20 e3 b0 c4 42 98 fc 1c 14 9a fb f4 c8 99 6f b9 24 27 ae 41 e4 64 9b 93 4c a4 95 99 1b 78 52 b8 55

expanded (32 octets): e2 f1 60 30 25 1d f0 87 4b a1 9b 9a ba 25
76 10 bc 6d 53 1c 1d d2 06 df 0c a6 e8 4a e2 a2 67 42

{server} extract secret "master":

salt (32 octets): e2 f1 60 30 25 1d f0 87 4b a1 9b 9a ba 25 76 10
bc 6d 53 1c 1d d2 06 df 0c a6 e8 4a e2 a2 67 42

IKM (32 octets): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

secret (32 octets): e2 d3 2d 4e d6 6d d3 78 97 a0 e8 0c 84 10 75
03 ce 58 bf 8a ad 4c b5 5a 50 02 d7 7e cb 89 0e ce

{server} send handshake record:

payload (96 octets): 02 00 00 5c 03 03 3c cf d2 de c8 90 22 27 63
47 2a e8 13 67 77 c9 d7 35 87 77 bb 66 e9 1e a5 12 24 95 f5 59 ea 2d 00 13 01 00 00 34 00 29 00 02 00 00 00 33 00 24 00 1d 00 20 12 17 61 ee 42 c3 33 e1 b9 e7 7b 60 dd 57 c2 05 3c d9 45 12 ab 47 f1 15 e8 6e ff 50 94 2c ea 31 00 2b 00 02 03 04

complete record (101 octets): 16 03 03 00 60 02 00 00 5c 03 03 3c
cf d2 de c8 90 22 27 63 47 2a e8 13 67 77 c9 d7 35 87 77 bb 66 e9 1e a5 12 24 95 f5 59 ea 2d 00 13 01 00 00 34 00 29 00 02 00 00 00 33 00 24 00 1d 00 20 12 17 61 ee 42 c3 33 e1 b9 e7 7b 60 dd 57 c2 05 3c d9 45 12 ab 47 f1 15 e8 6e ff 50 94 2c ea 31 00 2b 00 02 03 04



Thomson                       Informational                    [Page 22]

RFC 8448                     TLS 1.3 Traces                 January 2019
{server} derive write traffic keys for handshake data:

PRK (32 octets): fe 92 7a e2 71 31 2e 8b f0 27 5b 58 1c 54 ee f0
20 45 0d c4 ec ff aa 05 a1 a3 5d 27 51 8e 78 03

key info (13 octets): 00 10 09 74 6c 73 31 33 20 6b 65 79 00

key expanded (16 octets): 27 c6 bd c0 a3 dc ea 39 a4 73 26 d7 9b
c9 e4 ee

iv info (12 octets): 00 0c 08 74 6c 73 31 33 20 69 76 00

iv expanded (12 octets): 95 69 ec dd 4d 05 36 70 5e 9e f7 25

{server} construct an EncryptedExtensions handshake message:

EncryptedExtensions (44 octets): 08 00 00 28 00 26 00 0a 00 14 00
12 00 1d 00 17 00 18 00 19 01 00 01 01 01 02 01 03 01 04 00 1c 00 02 40 01 00 00 00 00 00 2a 00 00

{server} calculate finished "tls13 finished":

PRK (32 octets): fe 92 7a e2 71 31 2e 8b f0 27 5b 58 1c 54 ee f0
20 45 0d c4 ec ff aa 05 a1 a3 5d 27 51 8e 78 03

hash (0 octets): (empty)

info (18 octets): 00 20 0e 74 6c 73 31 33 20 66 69 6e 69 73 68 65
64 00

expanded (32 octets): 4b b7 4c ae 7a 5d c8 91 46 04 c0 bf be 2f
0c 06 23 96 88 39 22 be c8 a1 5e 2a 9b 53 2a 5d 39 2c

finished (32 octets): 48 d3 e0 e1 b3 d9 07 c6 ac ff 14 5e 16 09
03 88 c7 7b 05 c0 50 b6 34 ab 1a 88 bb d0 dd 1a 34 b2

{server} construct a Finished handshake message:

Finished (36 octets): 14 00 00 20 48 d3 e0 e1 b3 d9 07 c6 ac ff
14 5e 16 09 03 88 c7 7b 05 c0 50 b6 34 ab 1a 88 bb d0 dd 1a 34 b2
Thomson                       Informational                    [Page 23]

RFC 8448                     TLS 1.3 Traces                 January 2019
{server} send handshake record:

payload (80 octets): 08 00 00 28 00 26 00 0a 00 14 00 12 00 1d 00
17 00 18 00 19 01 00 01 01 01 02 01 03 01 04 00 1c 00 02 40 01 00 00 00 00 00 2a 00 00 14 00 00 20 48 d3 e0 e1 b3 d9 07 c6 ac ff 14 5e 16 09 03 88 c7 7b 05 c0 50 b6 34 ab 1a 88 bb d0 dd 1a 34 b2

complete record (102 octets): 17 03 03 00 61 dc 48 23 7b 4b 87 9f
50 d0 d4 d2 62 ea 8b 47 16 eb 40 dd c1 eb 95 7e 11 12 6e 8a 71 49 c2 d0 12 d3 7a 71 15 95 7e 64 ce 30 00 8b 9e 03 23 f2 c0 5a 9c 1c 77 b4 f3 78 49 a6 95 ab 25 50 60 a3 3f ee 77 0c a9 5c b8 48 6b fd 08 43 b8 70 24 86 5c a3 5c c4 1c 4e 51 5c 64 dc b1 36 9f 98 63 5b c7 a5

{server} derive secret "tls13 c ap traffic":

PRK (32 octets): e2 d3 2d 4e d6 6d d3 78 97 a0 e8 0c 84 10 75 03
ce 58 bf 8a ad 4c b5 5a 50 02 d7 7e cb 89 0e ce

hash (32 octets): b0 ae ff c4 6a 2c fe 33 11 4e 6f d7 d5 1f 9f 04
b1 ca 3c 49 7d ab 08 93 4a 77 4a 9d 9a d7 db f3

info (54 octets): 00 20 12 74 6c 73 31 33 20 63 20 61 70 20 74 72
61 66 66 69 63 20 b0 ae ff c4 6a 2c fe 33 11 4e 6f d7 d5 1f 9f 04 b1 ca 3c 49 7d ab 08 93 4a 77 4a 9d 9a d7 db f3

expanded (32 octets): 2a bb f2 b8 e3 81 d2 3d be be 1d d2 a7 d1
6a 8b f4 84 cb 49 50 d2 3f b7 fb 7f a8 54 70 62 d9 a1

{server} derive secret "tls13 s ap traffic":

PRK (32 octets): e2 d3 2d 4e d6 6d d3 78 97 a0 e8 0c 84 10 75 03
ce 58 bf 8a ad 4c b5 5a 50 02 d7 7e cb 89 0e ce

hash (32 octets): b0 ae ff c4 6a 2c fe 33 11 4e 6f d7 d5 1f 9f 04
b1 ca 3c 49 7d ab 08 93 4a 77 4a 9d 9a d7 db f3

info (54 octets): 00 20 12 74 6c 73 31 33 20 73 20 61 70 20 74 72
61 66 66 69 63 20 b0 ae ff c4 6a 2c fe 33 11 4e 6f d7 d5 1f 9f 04 b1 ca 3c 49 7d ab 08 93 4a 77 4a 9d 9a d7 db f3

expanded (32 octets): cc 21 f1 bf 8f eb 7d d5 fa 50 5b d9 c4 b4
68 a9 98 4d 55 4a 99 3d c4 9e 6d 28 55 98 fb 67 26 91
Thomson                       Informational                    [Page 24]

RFC 8448                     TLS 1.3 Traces                 January 2019
{server} derive secret "tls13 exp master":

PRK (32 octets): e2 d3 2d 4e d6 6d d3 78 97 a0 e8 0c 84 10 75 03
ce 58 bf 8a ad 4c b5 5a 50 02 d7 7e cb 89 0e ce

hash (32 octets): b0 ae ff c4 6a 2c fe 33 11 4e 6f d7 d5 1f 9f 04
b1 ca 3c 49 7d ab 08 93 4a 77 4a 9d 9a d7 db f3

info (52 octets): 00 20 10 74 6c 73 31 33 20 65 78 70 20 6d 61 73
74 65 72 20 b0 ae ff c4 6a 2c fe 33 11 4e 6f d7 d5 1f 9f 04 b1 ca 3c 49 7d ab 08 93 4a 77 4a 9d 9a d7 db f3

expanded (32 octets): 3f d9 3d 4f fd dc 98 e6 4b 14 dd 10 7a ed
f8 ee 4a dd 23 f4 51 0f 58 a4 59 2d 0b 20 1b ee 56 b4

{server} derive write traffic keys for application data:

PRK (32 octets): cc 21 f1 bf 8f eb 7d d5 fa 50 5b d9 c4 b4 68 a9
98 4d 55 4a 99 3d c4 9e 6d 28 55 98 fb 67 26 91

key info (13 octets): 00 10 09 74 6c 73 31 33 20 6b 65 79 00

key expanded (16 octets): e8 57 c6 90 a3 4c 5a 91 29 d8 33 61 96
84 f9 5e

iv info (12 octets): 00 0c 08 74 6c 73 31 33 20 69 76 00

iv expanded (12 octets): 06 85 d6 b5 61 aa b9 ef 10 13 fa f9

{server} derive read traffic keys for early application data (same
as client early application data write traffic keys)

{client} derive secret for handshake "tls13 derived":

PRK (32 octets): 9b 21 88 e9 b2 fc 6d 64 d7 1d c3 29 90 0e 20 bb
41 91 50 00 f6 78 aa 83 9c bb 79 7c b7 d8 33 2c

hash (32 octets): e3 b0 c4 42 98 fc 1c 14 9a fb f4 c8 99 6f b9 24
27 ae 41 e4 64 9b 93 4c a4 95 99 1b 78 52 b8 55

info (49 octets): 00 20 0d 74 6c 73 31 33 20 64 65 72 69 76 65 64
20 e3 b0 c4 42 98 fc 1c 14 9a fb f4 c8 99 6f b9 24 27 ae 41 e4 64 9b 93 4c a4 95 99 1b 78 52 b8 55

expanded (32 octets): 5f 17 90 bb d8 2c 5e 7d 37 6e d2 e1 e5 2f
8e 60 38 c9 34 6d b6 1b 43 be 9a 52 f7 7e f3 99 8e 80




Thomson                       Informational                    [Page 25]

RFC 8448                     TLS 1.3 Traces                 January 2019
{client} extract secret "handshake" (same as server handshake
secret)

{client} derive secret "tls13 c hs traffic" (same as server)

{client} derive secret "tls13 s hs traffic" (same as server)

{client} derive secret for master "tls13 derived" (same as server)

{client} extract secret "master" (same as server master secret)

{client} derive read traffic keys for handshake data (same as server
handshake data write traffic keys)

{client} calculate finished "tls13 finished" (same as server)

{client} derive secret "tls13 c ap traffic" (same as server)

{client} derive secret "tls13 s ap traffic" (same as server)

{client} derive secret "tls13 exp master" (same as server)

{client} construct an EndOfEarlyData handshake message:

EndOfEarlyData (4 octets): 05 00 00 00

{client} send handshake record:

payload (4 octets): 05 00 00 00

complete record (26 octets): 17 03 03 00 15 ac a6 fc 94 48 41 29
8d f9 95 93 72 5f 9b f9 75 44 29 b1 2f 09

{client} derive write traffic keys for handshake data:

PRK (32 octets): 2f aa c0 8f 85 1d 35 fe a3 60 4f cb 4d e8 2d c6
2c 9b 16 4a 70 97 4d 04 62 e2 7f 1a b2 78 70 0f

key info (13 octets): 00 10 09 74 6c 73 31 33 20 6b 65 79 00

key expanded (16 octets): b1 53 08 06 f4 ad fe ac 83 f1 41 30 32
bb fa 82

iv info (12 octets): 00 0c 08 74 6c 73 31 33 20 69 76 00

iv expanded (12 octets): eb 50 c1 6b e7 65 4a bf 99 dd 06 d9




Thomson                       Informational                    [Page 26]

RFC 8448                     TLS 1.3 Traces                 January 2019
{client} derive read traffic keys for application data (same as
server application data write traffic keys)

{client} calculate finished "tls13 finished":

PRK (32 octets): 2f aa c0 8f 85 1d 35 fe a3 60 4f cb 4d e8 2d c6
2c 9b 16 4a 70 97 4d 04 62 e2 7f 1a b2 78 70 0f

hash (0 octets): (empty)

info (18 octets): 00 20 0e 74 6c 73 31 33 20 66 69 6e 69 73 68 65
64 00

expanded (32 octets): 5a ce 39 4c 26 98 0d 58 12 43 f6 27 d1 15
0a e2 7e 37 fa 52 36 4e 0a 7f 20 ac 68 6d 09 cd 0e 8e

finished (32 octets): 72 30 a9 c9 52 c2 5c d6 13 8f c5 e6 62 83
08 c4 1c 53 35 dd 81 b9 f9 6b ce a5 0f d3 2b da 41 6d

{client} construct a Finished handshake message:

Finished (36 octets): 14 00 00 20 72 30 a9 c9 52 c2 5c d6 13 8f
c5 e6 62 83 08 c4 1c 53 35 dd 81 b9 f9 6b ce a5 0f d3 2b da 41 6d

{client} send handshake record:

payload (36 octets): 14 00 00 20 72 30 a9 c9 52 c2 5c d6 13 8f c5
e6 62 83 08 c4 1c 53 35 dd 81 b9 f9 6b ce a5 0f d3 2b da 41 6d

complete record (58 octets): 17 03 03 00 35 00 f8 b4 67 d1 4c f2
2a 4b 3f 0b 6a e0 d8 e6 cc 8d 08 e0 db 35 15 ef 5c 2b df 19 22 ea fb b7 00 09 96 47 16 d8 34 fb 70 c3 d2 a5 6c 5b 1f 5f 6b db a6 c3 33 cf

{client} derive write traffic keys for application data:

PRK (32 octets): 2a bb f2 b8 e3 81 d2 3d be be 1d d2 a7 d1 6a 8b
f4 84 cb 49 50 d2 3f b7 fb 7f a8 54 70 62 d9 a1

key info (13 octets): 00 10 09 74 6c 73 31 33 20 6b 65 79 00

key expanded (16 octets): 3c f1 22 f3 01 c6 35 8c a7 98 95 53 25
0e fd 72

iv info (12 octets): 00 0c 08 74 6c 73 31 33 20 69 76 00

iv expanded (12 octets): ab 1a ec 26 aa 78 b8 fc 11 76 b9 ac


Thomson                       Informational                    [Page 27]

RFC 8448                     TLS 1.3 Traces                 January 2019
{client} derive secret "tls13 res master":

PRK (32 octets): e2 d3 2d 4e d6 6d d3 78 97 a0 e8 0c 84 10 75 03
ce 58 bf 8a ad 4c b5 5a 50 02 d7 7e cb 89 0e ce

hash (32 octets): c3 c1 22 e0 bd 90 7a 4a 3f f6 11 2d 8f d5 3d bf
89 c7 73 d9 55 2e 8b 6b 9d 56 d3 61 b3 a9 7b f6

info (52 octets): 00 20 10 74 6c 73 31 33 20 72 65 73 20 6d 61 73
74 65 72 20 c3 c1 22 e0 bd 90 7a 4a 3f f6 11 2d 8f d5 3d bf 89 c7 73 d9 55 2e 8b 6b 9d 56 d3 61 b3 a9 7b f6

expanded (32 octets): 5e 95 bd f1 f8 90 05 ea 2e 9a a0 ba 85 e7
28 e3 c1 9c 5f e0 c6 99 e3 f5 be e5 9f ae bd 0b 54 06

{server} derive read traffic keys for handshake data (same as client
handshake data write traffic keys)

{server} calculate finished "tls13 finished" (same as client)

{server} derive read traffic keys for application data (same as
client application data write traffic keys)

{server} derive secret "tls13 res master" (same as client)

{client} send application_data record:

payload (50 octets): 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e
0f 10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f 20 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f 30 31

complete record (72 octets): 17 03 03 00 43 b1 ce bc e2 42 aa 20
1b e9 ae 5e 1c b2 a9 aa 4b 33 d4 e8 66 af 1e db 06 89 19 23 77 41 aa 03 1d 7a 74 d4 91 c9 9b 9d 4e 23 2b 74 20 6b c6 fb aa 04 fe 78 be 44 a9 b4 f5 43 20 a1 7e b7 69 92 af ac 31 03

{server} send application_data record:

payload (50 octets): 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e
0f 10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f 20 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f 30 31

complete record (72 octets): 17 03 03 00 43 27 5e 9f 20 ac ff 57
bc 00 06 57 d3 86 7d f0 39 cc cf 79 04 78 84 cf 75 77 17 46 f7 40 b5 a8 3f 46 2a 09 54 c3 58 13 93 a2 03 a2 5a 7d d1 41 41 ef 1a 37 90 0c db 62 ff 62 de e1 ba 39 ab 25 90 cb f1 94




Thomson                       Informational                    [Page 28]

RFC 8448                     TLS 1.3 Traces                 January 2019
{client} send alert record:

payload (2 octets): 01 00

complete record (24 octets): 17 03 03 00 13 0f ac ce 32 46 bd fc
63 69 83 8d 6a 82 ae 6d e5 d4 22 dc

{server} send alert record:

payload (2 octets): 01 00

complete record (24 octets): 17 03 03 00 13 5b 18 af 44 4e 8e 1e
ec 71 58 fb 62 d8 f2 57 7d 37 ba 5d
5.  HelloRetryRequest
In this example, the client initiates a handshake with an X25519 [RFC7748] share. The server, however, prefers P-256 [FIPS.186-4.2013] and sends a HelloRetryRequest that requires the client to generate a key share on the P-256 curve.

Note: The HelloRetryRequest uses the same handshake message type as
a ServerHello and so is labeled as ServerHello here.

{client} create an ephemeral x25519 key pair:

private key (32 octets): 0e d0 2f 8e 81 17 ef c7 5c a7 ac 32 aa
7e 34 ed a6 4c dc 0d da d1 54 a5 e8 52 89 f9 59 f6 32 04

public key (32 octets): e8 e8 e3 f3 b9 3a 25 ed 97 a1 4a 7d ca cb
8a 27 2c 62 88 e5 85 c6 48 4d 05 26 2f ca d0 62 ad 1f

{client} construct a ClientHello handshake message:

ClientHello (180 octets): 01 00 00 b0 03 03 b0 b1 c5 a5 aa 37 c5
91 9f 2e d1 d5 c6 ff f7 fc b7 84 97 16 94 5a 2b 8c ee 92 58 a3 46 67 7b 6f 00 00 06 13 01 13 03 13 02 01 00 00 81 00 00 00 0b 00 09 00 00 06 73 65 72 76 65 72 ff 01 00 01 00 00 0a 00 08 00 06 00 1d 00 17 00 18 00 33 00 26 00 24 00 1d 00 20 e8 e8 e3 f3 b9 3a 25 ed 97 a1 4a 7d ca cb 8a 27 2c 62 88 e5 85 c6 48 4d 05 26 2f ca d0 62 ad 1f 00 2b 00 03 02 03 04 00 0d 00 20 00 1e 04 03 05 03 06 03 02 03 08 04 08 05 08 06 04 01 05 01 06 01 02 01 04 02 05 02 06 02 02 02 00 2d 00 02 01 01 00 1c 00 02 40 01
Thomson                       Informational                    [Page 29]

RFC 8448                     TLS 1.3 Traces                 January 2019
{client} send handshake record:

payload (180 octets): 01 00 00 b0 03 03 b0 b1 c5 a5 aa 37 c5 91
9f 2e d1 d5 c6 ff f7 fc b7 84 97 16 94 5a 2b 8c ee 92 58 a3 46 67 7b 6f 00 00 06 13 01 13 03 13 02 01 00 00 81 00 00 00 0b 00 09 00 00 06 73 65 72 76 65 72 ff 01 00 01 00 00 0a 00 08 00 06 00 1d 00 17 00 18 00 33 00 26 00 24 00 1d 00 20 e8 e8 e3 f3 b9 3a 25 ed 97 a1 4a 7d ca cb 8a 27 2c 62 88 e5 85 c6 48 4d 05 26 2f ca d0 62 ad 1f 00 2b 00 03 02 03 04 00 0d 00 20 00 1e 04 03 05 03 06 03 02 03 08 04 08 05 08 06 04 01 05 01 06 01 02 01 04 02 05 02 06 02 02 02 00 2d 00 02 01 01 00 1c 00 02 40 01

complete record (185 octets): 16 03 01 00 b4 01 00 00 b0 03 03 b0
b1 c5 a5 aa 37 c5 91 9f 2e d1 d5 c6 ff f7 fc b7 84 97 16 94 5a 2b 8c ee 92 58 a3 46 67 7b 6f 00 00 06 13 01 13 03 13 02 01 00 00 81 00 00 00 0b 00 09 00 00 06 73 65 72 76 65 72 ff 01 00 01 00 00 0a 00 08 00 06 00 1d 00 17 00 18 00 33 00 26 00 24 00 1d 00 20 e8 e8 e3 f3 b9 3a 25 ed 97 a1 4a 7d ca cb 8a 27 2c 62 88 e5 85 c6 48 4d 05 26 2f ca d0 62 ad 1f 00 2b 00 03 02 03 04 00 0d 00 20 00 1e 04 03 05 03 06 03 02 03 08 04 08 05 08 06 04 01 05 01 06 01 02 01 04 02 05 02 06 02 02 02 00 2d 00 02 01 01 00 1c 00 02 40 01

{server} construct a ServerHello handshake message:

ServerHello (176 octets): 02 00 00 ac 03 03 cf 21 ad 74 e5 9a 61
11 be 1d 8c 02 1e 65 b8 91 c2 a2 11 16 7a bb 8c 5e 07 9e 09 e2 c8 a8 33 9c 00 13 01 00 00 84 00 33 00 02 00 17 00 2c 00 74 00 72 71 dc d0 4b b8 8b c3 18 91 19 39 8a 00 00 00 00 ee fa fc 76 c1 46 b8 23 b0 96 f8 aa ca d3 65 dd 00 30 95 3f 4e df 62 56 36 e5 f2 1b b2 e2 3f cc 65 4b 1b 5b 40 31 8d 10 d1 37 ab cb b8 75 74 e3 6e 8a 1f 02 5f 7d fa 5d 6e 50 78 1b 5e da 4a a1 5b 0c 8b e7 78 25 7d 16 aa 30 30 e9 e7 84 1d d9 e4 c0 34 22 67 e8 ca 0c af 57 1f b2 b7 cf f0 f9 34 b0 00 2b 00 02 03 04

{server} send handshake record:

payload (176 octets): 02 00 00 ac 03 03 cf 21 ad 74 e5 9a 61 11
be 1d 8c 02 1e 65 b8 91 c2 a2 11 16 7a bb 8c 5e 07 9e 09 e2 c8 a8 33 9c 00 13 01 00 00 84 00 33 00 02 00 17 00 2c 00 74 00 72 71 dc d0 4b b8 8b c3 18 91 19 39 8a 00 00 00 00 ee fa fc 76 c1 46 b8 23 b0 96 f8 aa ca d3 65 dd 00 30 95 3f 4e df 62 56 36 e5 f2 1b b2 e2 3f cc 65 4b 1b 5b 40 31 8d 10 d1 37 ab cb b8 75 74 e3 6e 8a 1f 02 5f 7d fa 5d 6e 50 78 1b 5e da 4a a1 5b 0c 8b e7 78 25 7d 16 aa 30 30 e9 e7 84 1d d9 e4 c0 34 22 67 e8 ca 0c af 57 1f b2 b7 cf f0 f9 34 b0 00 2b 00 02 03 04




Thomson                       Informational                    [Page 30]

RFC 8448                     TLS 1.3 Traces                 January 2019
complete record (181 octets): 16 03 03 00 b0 02 00 00 ac 03 03 cf
21 ad 74 e5 9a 61 11 be 1d 8c 02 1e 65 b8 91 c2 a2 11 16 7a bb 8c 5e 07 9e 09 e2 c8 a8 33 9c 00 13 01 00 00 84 00 33 00 02 00 17 00 2c 00 74 00 72 71 dc d0 4b b8 8b c3 18 91 19 39 8a 00 00 00 00 ee fa fc 76 c1 46 b8 23 b0 96 f8 aa ca d3 65 dd 00 30 95 3f 4e df 62 56 36 e5 f2 1b b2 e2 3f cc 65 4b 1b 5b 40 31 8d 10 d1 37 ab cb b8 75 74 e3 6e 8a 1f 02 5f 7d fa 5d 6e 50 78 1b 5e da 4a a1 5b 0c 8b e7 78 25 7d 16 aa 30 30 e9 e7 84 1d d9 e4 c0 34 22 67 e8 ca 0c af 57 1f b2 b7 cf f0 f9 34 b0 00 2b 00 02 03 04

{client} create an ephemeral P-256 key pair:

private key (32 octets): ab 54 73 46 7e 19 34 6c eb 0a 04 14 e4
1d a2 1d 4d 24 45 bc 30 25 af e9 7c 4e 8d c8 d5 13 da 39

public key (65 octets): 04 a6 da 73 92 ec 59 1e 17 ab fd 53 59 64
b9 98 94 d1 3b ef b2 21 b3 de f2 eb e3 83 0e ac 8f 01 51 81 26 77 c4 d6 d2 23 7e 85 cf 01 d6 91 0c fb 83 95 4e 76 ba 73 52 83 05 34 15 98 97 e8 06 57 80

{client} construct a ClientHello handshake message:

ClientHello (512 octets): 01 00 01 fc 03 03 b0 b1 c5 a5 aa 37 c5
91 9f 2e d1 d5 c6 ff f7 fc b7 84 97 16 94 5a 2b 8c ee 92 58 a3 46 67 7b 6f 00 00 06 13 01 13 03 13 02 01 00 01 cd 00 00 00 0b 00 09 00 00 06 73 65 72 76 65 72 ff 01 00 01 00 00 0a 00 08 00 06 00 1d 00 17 00 18 00 33 00 47 00 45 00 17 00 41 04 a6 da 73 92 ec 59 1e 17 ab fd 53 59 64 b9 98 94 d1 3b ef b2 21 b3 de f2 eb e3 83 0e ac 8f 01 51 81 26 77 c4 d6 d2 23 7e 85 cf 01 d6 91 0c fb 83 95 4e 76 ba 73 52 83 05 34 15 98 97 e8 06 57 80 00 2b 00 03 02 03 04 00 0d 00 20 00 1e 04 03 05 03 06 03 02 03 08 04 08 05 08 06 04 01 05 01 06 01 02 01 04 02 05 02 06 02 02 02 00 2c 00 74 00 72 71 dc d0 4b b8 8b c3 18 91 19 39 8a 00 00 00 00 ee fa fc 76 c1 46 b8 23 b0 96 f8 aa ca d3 65 dd 00 30 95 3f 4e df 62 56 36 e5 f2 1b b2 e2 3f cc 65 4b 1b 5b 40 31 8d 10 d1 37 ab cb b8 75 74 e3 6e 8a 1f 02 5f 7d fa 5d 6e 50 78 1b 5e da 4a a1 5b 0c 8b e7 78 25 7d 16 aa 30 30 e9 e7 84 1d d9 e4 c0 34 22 67 e8 ca 0c af 57 1f b2 b7 cf f0 f9 34 b0 00 2d 00 02 01 01 00 1c 00 02 40 01 00 15 00 af 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00


Thomson                       Informational                    [Page 31]

RFC 8448                     TLS 1.3 Traces                 January 2019
{client} send handshake record:

payload (512 octets): 01 00 01 fc 03 03 b0 b1 c5 a5 aa 37 c5 91
9f 2e d1 d5 c6 ff f7 fc b7 84 97 16 94 5a 2b 8c ee 92 58 a3 46 67 7b 6f 00 00 06 13 01 13 03 13 02 01 00 01 cd 00 00 00 0b 00 09 00 00 06 73 65 72 76 65 72 ff 01 00 01 00 00 0a 00 08 00 06 00 1d 00 17 00 18 00 33 00 47 00 45 00 17 00 41 04 a6 da 73 92 ec 59 1e 17 ab fd 53 59 64 b9 98 94 d1 3b ef b2 21 b3 de f2 eb e3 83 0e ac 8f 01 51 81 26 77 c4 d6 d2 23 7e 85 cf 01 d6 91 0c fb 83 95 4e 76 ba 73 52 83 05 34 15 98 97 e8 06 57 80 00 2b 00 03 02 03 04 00 0d 00 20 00 1e 04 03 05 03 06 03 02 03 08 04 08 05 08 06 04 01 05 01 06 01 02 01 04 02 05 02 06 02 02 02 00 2c 00 74 00 72 71 dc d0 4b b8 8b c3 18 91 19 39 8a 00 00 00 00 ee fa fc 76 c1 46 b8 23 b0 96 f8 aa ca d3 65 dd 00 30 95 3f 4e df 62 56 36 e5 f2 1b b2 e2 3f cc 65 4b 1b 5b 40 31 8d 10 d1 37 ab cb b8 75 74 e3 6e 8a 1f 02 5f 7d fa 5d 6e 50 78 1b 5e da 4a a1 5b 0c 8b e7 78 25 7d 16 aa 30 30 e9 e7 84 1d d9 e4 c0 34 22 67 e8 ca 0c af 57 1f b2 b7 cf f0 f9 34 b0 00 2d 00 02 01 01 00 1c 00 02 40 01 00 15 00 af 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

complete record (517 octets): 16 03 03 02 00 01 00 01 fc 03 03 b0
b1 c5 a5 aa 37 c5 91 9f 2e d1 d5 c6 ff f7 fc b7 84 97 16 94 5a 2b 8c ee 92 58 a3 46 67 7b 6f 00 00 06 13 01 13 03 13 02 01 00 01 cd 00 00 00 0b 00 09 00 00 06 73 65 72 76 65 72 ff 01 00 01 00 00 0a 00 08 00 06 00 1d 00 17 00 18 00 33 00 47 00 45 00 17 00 41 04 a6 da 73 92 ec 59 1e 17 ab fd 53 59 64 b9 98 94 d1 3b ef b2 21 b3 de f2 eb e3 83 0e ac 8f 01 51 81 26 77 c4 d6 d2 23 7e 85 cf 01 d6 91 0c fb 83 95 4e 76 ba 73 52 83 05 34 15 98 97 e8 06 57 80 00 2b 00 03 02 03 04 00 0d 00 20 00 1e 04 03 05 03 06 03 02 03 08 04 08 05 08 06 04 01 05 01 06 01 02 01 04 02 05 02 06 02 02 02 00 2c 00 74 00 72 71 dc d0 4b b8 8b c3 18 91 19 39 8a 00 00 00 00 ee fa fc 76 c1 46 b8 23 b0 96 f8 aa ca d3 65 dd 00 30 95 3f 4e df 62 56 36 e5 f2 1b b2 e2 3f cc 65 4b 1b 5b 40 31 8d 10 d1 37 ab cb b8 75 74 e3 6e 8a 1f 02 5f 7d fa 5d 6e 50 78 1b 5e da 4a a1 5b 0c 8b e7 78 25 7d 16 aa 30 30 e9 e7 84 1d d9 e4 c0 34 22 67 e8 ca 0c af 57 1f b2 b7 cf f0 f9 34 b0 00 2d 00 02 01 01 00 1c 00 02 40 01 00 15 00 af 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00


Thomson                       Informational                    [Page 32]

RFC 8448                     TLS 1.3 Traces                 January 2019
{server} extract secret "early":

salt: 0 (all zero octets)

IKM (32 octets): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

secret (32 octets): 33 ad 0a 1c 60 7e c0 3b 09 e6 cd 98 93 68 0c
e2 10 ad f3 00 aa 1f 26 60 e1 b2 2e 10 f1 70 f9 2a

{server} create an ephemeral P-256 key pair:

private key (32 octets): 8c 51 06 01 f9 76 5b fb 8e d6 93 44 9a
48 98 98 59 b5 cf a8 79 cb 9f 54 43 c4 1c 5f f1 06 34 ed

public key (65 octets): 04 58 3e 05 4b 7a 66 67 2a e0 20 ad 9d 26
86 fc c8 5b 5a d4 1a 13 4a 0f 03 ee 72 b8 93 05 2b d8 5b 4c 8d e6 77 6f 5b 04 ac 07 d8 35 40 ea b3 e3 d9 c5 47 bc 65 28 c4 31 7d 29 46 86 09 3a 6c ad 7d

{server} construct a ServerHello handshake message:

ServerHello (123 octets): 02 00 00 77 03 03 bb 34 1d 84 7f d7 89
c4 7c 38 71 72 dc 0c 9b f1 47 fc ca cb 50 43 d8 6c a4 c5 98 d3 ff 57 1b 98 00 13 01 00 00 4f 00 33 00 45 00 17 00 41 04 58 3e 05 4b 7a 66 67 2a e0 20 ad 9d 26 86 fc c8 5b 5a d4 1a 13 4a 0f 03 ee 72 b8 93 05 2b d8 5b 4c 8d e6 77 6f 5b 04 ac 07 d8 35 40 ea b3 e3 d9 c5 47 bc 65 28 c4 31 7d 29 46 86 09 3a 6c ad 7d 00 2b 00 02 03 04

{server} derive secret for handshake "tls13 derived":

PRK (32 octets): 33 ad 0a 1c 60 7e c0 3b 09 e6 cd 98 93 68 0c e2
10 ad f3 00 aa 1f 26 60 e1 b2 2e 10 f1 70 f9 2a

hash (32 octets): e3 b0 c4 42 98 fc 1c 14 9a fb f4 c8 99 6f b9 24
27 ae 41 e4 64 9b 93 4c a4 95 99 1b 78 52 b8 55

info (49 octets): 00 20 0d 74 6c 73 31 33 20 64 65 72 69 76 65 64
20 e3 b0 c4 42 98 fc 1c 14 9a fb f4 c8 99 6f b9 24 27 ae 41 e4 64 9b 93 4c a4 95 99 1b 78 52 b8 55


Thomson                       Informational                    [Page 33]

RFC 8448                     TLS 1.3 Traces                 January 2019
expanded (32 octets): 6f 26 15 a1 08 c7 02 c5 67 8f 54 fc 9d ba
b6 97 16 c0 76 18 9c 48 25 0c eb ea c3 57 6c 36 11 ba

{server} extract secret "handshake":

salt (32 octets): 6f 26 15 a1 08 c7 02 c5 67 8f 54 fc 9d ba b6 97
16 c0 76 18 9c 48 25 0c eb ea c3 57 6c 36 11 ba

IKM (32 octets): c1 42 ce 13 ca 11 b5 c2 23 36 52 e6 3a d3 d9 78
44 f1 62 1f bf b9 de 69 d5 47 dc 8f ed ea be b4

secret (32 octets): ce 02 2e 5e 6e 81 e5 07 36 d7 73 f2 d3 ad fc
e8 22 0d 04 9b f5 10 f0 db fa c9 27 ef 42 43 b1 48

{server} derive secret "tls13 c hs traffic":

PRK (32 octets): ce 02 2e 5e 6e 81 e5 07 36 d7 73 f2 d3 ad fc e8
22 0d 04 9b f5 10 f0 db fa c9 27 ef 42 43 b1 48

hash (32 octets): 8a a8 e8 28 ec 2f 8a 88 4f ec 95 a3 13 9d e0 1c
15 a3 da a7 ff 5b fc 3f 4b fc c2 1b 43 8d 7b f8

info (54 octets): 00 20 12 74 6c 73 31 33 20 63 20 68 73 20 74 72
61 66 66 69 63 20 8a a8 e8 28 ec 2f 8a 88 4f ec 95 a3 13 9d e0 1c 15 a3 da a7 ff 5b fc 3f 4b fc c2 1b 43 8d 7b f8

expanded (32 octets): 15 8a a7 ab 88 55 07 35 82 b4 1d 67 4b 40
55 ca bc c5 34 72 8f 65 93 14 86 1b 4e 08 e2 01 15 66

{server} derive secret "tls13 s hs traffic":

PRK (32 octets): ce 02 2e 5e 6e 81 e5 07 36 d7 73 f2 d3 ad fc e8
22 0d 04 9b f5 10 f0 db fa c9 27 ef 42 43 b1 48

hash (32 octets): 8a a8 e8 28 ec 2f 8a 88 4f ec 95 a3 13 9d e0 1c
15 a3 da a7 ff 5b fc 3f 4b fc c2 1b 43 8d 7b f8

info (54 octets): 00 20 12 74 6c 73 31 33 20 73 20 68 73 20 74 72
61 66 66 69 63 20 8a a8 e8 28 ec 2f 8a 88 4f ec 95 a3 13 9d e0 1c 15 a3 da a7 ff 5b fc 3f 4b fc c2 1b 43 8d 7b f8

expanded (32 octets): 34 03 e7 81 e2 af 7b 65 08 da 28 57 4f 6e
95 a1 ab f1 62 de 83 a9 79 27 c3 76 72 a4 a0 ce f8 a1

{server} derive secret for master "tls13 derived":

PRK (32 octets): ce 02 2e 5e 6e 81 e5 07 36 d7 73 f2 d3 ad fc e8
22 0d 04 9b f5 10 f0 db fa c9 27 ef 42 43 b1 48


Thomson                       Informational                    [Page 34]

RFC 8448                     TLS 1.3 Traces                 January 2019
hash (32 octets): e3 b0 c4 42 98 fc 1c 14 9a fb f4 c8 99 6f b9 24
27 ae 41 e4 64 9b 93 4c a4 95 99 1b 78 52 b8 55

info (49 octets): 00 20 0d 74 6c 73 31 33 20 64 65 72 69 76 65 64
20 e3 b0 c4 42 98 fc 1c 14 9a fb f4 c8 99 6f b9 24 27 ae 41 e4 64 9b 93 4c a4 95 99 1b 78 52 b8 55

expanded (32 octets): ad 1c bc d3 a0 dc 70 53 ee b3 ed 3a 47 90
1d 16 a9 fc 63 a7 3c 64 be b5 67 48 1a 7d fb 3a 2c b3

{server} extract secret "master":

salt (32 octets): ad 1c bc d3 a0 dc 70 53 ee b3 ed 3a 47 90 1d 16
a9 fc 63 a7 3c 64 be b5 67 48 1a 7d fb 3a 2c b3

IKM (32 octets): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

secret (32 octets): 11 31 54 5d 0b af 79 dd ce 9b 87 f0 69 45 78
1a 57 dd 18 ef 37 8d cd 20 60 f8 f9 a5 69 02 7e d8

{server} send handshake record:

payload (123 octets): 02 00 00 77 03 03 bb 34 1d 84 7f d7 89 c4
7c 38 71 72 dc 0c 9b f1 47 fc ca cb 50 43 d8 6c a4 c5 98 d3 ff 57 1b 98 00 13 01 00 00 4f 00 33 00 45 00 17 00 41 04 58 3e 05 4b 7a 66 67 2a e0 20 ad 9d 26 86 fc c8 5b 5a d4 1a 13 4a 0f 03 ee 72 b8 93 05 2b d8 5b 4c 8d e6 77 6f 5b 04 ac 07 d8 35 40 ea b3 e3 d9 c5 47 bc 65 28 c4 31 7d 29 46 86 09 3a 6c ad 7d 00 2b 00 02 03 04

complete record (128 octets): 16 03 03 00 7b 02 00 00 77 03 03 bb
34 1d 84 7f d7 89 c4 7c 38 71 72 dc 0c 9b f1 47 fc ca cb 50 43 d8 6c a4 c5 98 d3 ff 57 1b 98 00 13 01 00 00 4f 00 33 00 45 00 17 00 41 04 58 3e 05 4b 7a 66 67 2a e0 20 ad 9d 26 86 fc c8 5b 5a d4 1a 13 4a 0f 03 ee 72 b8 93 05 2b d8 5b 4c 8d e6 77 6f 5b 04 ac 07 d8 35 40 ea b3 e3 d9 c5 47 bc 65 28 c4 31 7d 29 46 86 09 3a 6c ad 7d 00 2b 00 02 03 04

{server} derive write traffic keys for handshake data:

PRK (32 octets): 34 03 e7 81 e2 af 7b 65 08 da 28 57 4f 6e 95 a1
ab f1 62 de 83 a9 79 27 c3 76 72 a4 a0 ce f8 a1

key info (13 octets): 00 10 09 74 6c 73 31 33 20 6b 65 79 00

key expanded (16 octets): 46 46 bf ac 17 12 c4 26 cd 78 d8 a2 4a
8a 6f 6b


Thomson                       Informational                    [Page 35]

RFC 8448                     TLS 1.3 Traces                 January 2019
iv info (12 octets): 00 0c 08 74 6c 73 31 33 20 69 76 00

iv expanded (12 octets): c7 d3 95 c0 8d 62 f2 97 d1 37 68 ea

{server} construct an EncryptedExtensions handshake message:

EncryptedExtensions (28 octets): 08 00 00 18 00 16 00 0a 00 08 00
06 00 17 00 18 00 1d 00 1c 00 02 40 01 00 00 00 00

{server} construct a Certificate handshake message:

Certificate (445 octets): 0b 00 01 b9 00 00 01 b5 00 01 b0 30 82
01 ac 30 82 01 15 a0 03 02 01 02 02 01 02 30 0d 06 09 2a 86 48 86 f7 0d 01 01 0b 05 00 30 0e 31 0c 30 0a 06 03 55 04 03 13 03 72 73 61 30 1e 17 0d 31 36 30 37 33 30 30 31 32 33 35 39 5a 17 0d 32 36 30 37 33 30 30 31 32 33 35 39 5a 30 0e 31 0c 30 0a 06 03 55 04 03 13 03 72 73 61 30 81 9f 30 0d 06 09 2a 86 48 86 f7 0d 01 01 01 05 00 03 81 8d 00 30 81 89 02 81 81 00 b4 bb 49 8f 82 79 30 3d 98 08 36 39 9b 36 c6 98 8c 0c 68 de 55 e1 bd b8 26 d3 90 1a 24 61 ea fd 2d e4 9a 91 d0 15 ab bc 9a 95 13 7a ce 6c 1a f1 9e aa 6a f9 8c 7c ed 43 12 09 98 e1 87 a8 0e e0 cc b0 52 4b 1b 01 8c 3e 0b 63 26 4d 44 9a 6d 38 e2 2a 5f da 43 08 46 74 80 30 53 0e f0 46 1c 8c a9 d9 ef bf ae 8e a6 d1 d0 3e 2b d1 93 ef f0 ab 9a 80 02 c4 74 28 a6 d3 5a 8d 88 d7 9f 7f 1e 3f 02 03 01 00 01 a3 1a 30 18 30 09 06 03 55 1d 13 04 02 30 00 30 0b 06 03 55 1d 0f 04 04 03 02 05 a0 30 0d 06 09 2a 86 48 86 f7 0d 01 01 0b 05 00 03 81 81 00 85 aa d2 a0 e5 b9 27 6b 90 8c 65 f7 3a 72 67 17 06 18 a5 4c 5f 8a 7b 33 7d 2d f7 a5 94 36 54 17 f2 ea e8 f8 a5 8c 8f 81 72 f9 31 9c f3 6b 7f d6 c5 5b 80 f2 1a 03 01 51 56 72 60 96 fd 33 5e 5e 67 f2 db f1 02 70 2e 60 8c ca e6 be c1 fc 63 a4 2a 99 be 5c 3e b7 10 7c 3c 54 e9 b9 eb 2b d5 20 3b 1c 3b 84 e0 a8 b2 f7 59 40 9b a3 ea c9 d9 1d 40 2d cc 0c c8 f8 96 12 29 ac 91 87 b4 2b 4d e1 00 00

{server} construct a CertificateVerify handshake message:

CertificateVerify (136 octets): 0f 00 00 84 08 04 00 80 33 ab 13
d4 46 27 07 23 1b 5d ca e6 c8 19 0b 63 d1 da bc 74 f2 8c 39 53 70 da 0b 07 e5 b8 30 66 d0 24 6a 31 ac d9 5d f4 75 bf d7 99 a4 a7 0d 33 ad 93 d3 a3 17 a9 b2 c0 d2 37 a5 68 5b 21 9e 77 41 12 e3 91 a2 47 60 7d 1a ef f1 bb d0 a3 9f 38 2e e1 a5 fe 88 ae 99 ec 59 22 8e 64 97 e4 5d 48 ce 27 5a 6d 5e f4 0d 16 9f b6 f9 d3 3b 05 2e d3 dc dd 6b 5a 48 ba af ff bc b2 90 12 84 15 bd 38

{server} calculate finished "tls13 finished":

PRK (32 octets): 34 03 e7 81 e2 af 7b 65 08 da 28 57 4f 6e 95 a1
ab f1 62 de 83 a9 79 27 c3 76 72 a4 a0 ce f8 a1


Thomson                       Informational                    [Page 36]

RFC 8448                     TLS 1.3 Traces                 January 2019
hash (0 octets): (empty)

info (18 octets): 00 20 0e 74 6c 73 31 33 20 66 69 6e 69 73 68 65
64 00

expanded (32 octets): e7 f8 bb 3e a4 b6 c3 0c 47 10 b3 d0 9c 33
13 65 81 17 e7 0b 09 7e 85 03 68 e2 51 0c a5 63 1f 74

finished (32 octets): 88 63 e6 bf b0 42 0a 92 7f a2 7f 34 33 6a
70 ae 42 6e 96 8e 3e b8 84 94 5b 96 85 6d ba 39 76 d1

{server} construct a Finished handshake message:

Finished (36 octets): 14 00 00 20 88 63 e6 bf b0 42 0a 92 7f a2
7f 34 33 6a 70 ae 42 6e 96 8e 3e b8 84 94 5b 96 85 6d ba 39 76 d1

{server} send handshake record:

payload (645 octets): 08 00 00 18 00 16 00 0a 00 08 00 06 00 17
00 18 00 1d 00 1c 00 02 40 01 00 00 00 00 0b 00 01 b9 00 00 01 b5 00 01 b0 30 82 01 ac 30 82 01 15 a0 03 02 01 02 02 01 02 30 0d 06 09 2a 86 48 86 f7 0d 01 01 0b 05 00 30 0e 31 0c 30 0a 06 03 55 04 03 13 03 72 73 61 30 1e 17 0d 31 36 30 37 33 30 30 31 32 33 35 39 5a 17 0d 32 36 30 37 33 30 30 31 32 33 35 39 5a 30 0e 31 0c 30 0a 06 03 55 04 03 13 03 72 73 61 30 81 9f 30 0d 06 09 2a 86 48 86 f7 0d 01 01 01 05 00 03 81 8d 00 30 81 89 02 81 81 00 b4 bb 49 8f 82 79 30 3d 98 08 36 39 9b 36 c6 98 8c 0c 68 de 55 e1 bd b8 26 d3 90 1a 24 61 ea fd 2d e4 9a 91 d0 15 ab bc 9a 95 13 7a ce 6c 1a f1 9e aa 6a f9 8c 7c ed 43 12 09 98 e1 87 a8 0e e0 cc b0 52 4b 1b 01 8c 3e 0b 63 26 4d 44 9a 6d 38 e2 2a 5f da 43 08 46 74 80 30 53 0e f0 46 1c 8c a9 d9 ef bf ae 8e a6 d1 d0 3e 2b d1 93 ef f0 ab 9a 80 02 c4 74 28 a6 d3 5a 8d 88 d7 9f 7f 1e 3f 02 03 01 00 01 a3 1a 30 18 30 09 06 03 55 1d 13 04 02 30 00 30 0b 06 03 55 1d 0f 04 04 03 02 05 a0 30 0d 06 09 2a 86 48 86 f7 0d 01 01 0b 05 00 03 81 81 00 85 aa d2 a0 e5 b9 27 6b 90 8c 65 f7 3a 72 67 17 06 18 a5 4c 5f 8a 7b 33 7d 2d f7 a5 94 36 54 17 f2 ea e8 f8 a5 8c 8f 81 72 f9 31 9c f3 6b 7f d6 c5 5b 80 f2 1a 03 01 51 56 72 60 96 fd 33 5e 5e 67 f2 db f1 02 70 2e 60 8c ca e6 be c1 fc 63 a4 2a 99 be 5c 3e b7 10 7c 3c 54 e9 b9 eb 2b d5 20 3b 1c 3b 84 e0 a8 b2 f7 59 40 9b a3 ea c9 d9 1d 40 2d cc 0c c8 f8 96 12 29 ac 91 87 b4 2b 4d e1 00 00 0f 00 00 84 08 04 00 80 33 ab 13 d4 46 27 07 23 1b 5d ca e6 c8 19 0b 63 d1 da bc 74 f2 8c 39 53 70 da 0b 07 e5 b8 30 66 d0 24 6a 31 ac d9 5d f4 75 bf d7 99 a4 a7 0d 33 ad 93 d3 a3 17 a9 b2 c0 d2 37 a5 68 5b 21 9e 77 41 12 e3 91 a2 47 60 7d 1a ef f1 bb d0 a3 9f 38 2e e1 a5 fe 88 ae 99 ec 59 22 8e 64 97 e4 5d 48 ce 27 5a 6d 5e f4 0d 16 9f b6 f9 d3 3b 05 2e d3 dc dd 6b 5a 48 ba af ff bc b2 90 12 84 15 bd 38 14 00 00 20 88 63 e6 bf b0 42 0a 92 7f a2 7f 34 33 6a 70 ae 42 6e 96 8e 3e b8 84 94 5b 96 85 6d ba 39 76 d1


Thomson                       Informational                    [Page 37]

RFC 8448                     TLS 1.3 Traces                 January 2019
complete record (667 octets): 17 03 03 02 96 99 be e2 0b af 5b 7f
c7 27 bf ab 62 23 92 8a 38 1e 6d 0c f9 c4 da 65 3f 9d 2a 7b 23 f7 de 11 cc e8 42 d5 cf 75 63 17 63 45 0f fb 8b 0c c1 d2 38 e6 58 af 7a 12 ad c8 62 43 11 4a b1 4a 1d a2 fa e4 26 21 ce 48 3f b6 24 2e ab fa ad 52 56 6b 02 b3 1d 2e dd ed ef eb 80 e6 6a 99 00 d5 f9 73 b4 0c 4f df 74 71 9e cf 1b 68 d7 f9 c3 b6 ce b9 03 ca 13 dd 1b b8 f8 18 7a e3 34 17 e1 d1 52 52 2c 58 22 a1 a0 3a d5 2c 83 8c 55 95 3d 61 02 22 87 4c ce 8e 17 90 b2 29 a2 aa 0b 53 c8 d3 77 ee 72 01 82 95 1d c6 18 1d c5 d9 0b d1 f0 10 5e d1 e8 4a a5 f7 59 57 c6 66 18 97 07 9e 5e a5 00 74 49 e3 19 7b dc 7c 9b ee ed dd ea fd d8 44 af a5 c3 15 ec fe 65 e5 76 af e9 09 81 28 80 62 0e c7 04 8b 42 d7 f5 c7 8d 76 f2 99 d6 d8 25 34 bd d8 f5 12 fe bc 0e d3 81 4a ca 47 0c d8 00 0d 3e 1c b9 96 2b 05 2f bb 95 0d f6 83 a5 2c 2b a7 7e d3 71 3b 12 29 37 a6 e5 17 09 64 e2 ab 79 69 dc d9 80 b3 db 9b 45 8d a7 60 31 24 d6 dc 00 5e 4d 6e 04 b4 d0 c4 ba f3 27 5d b8 27 db ba 0a 6d b0 96 72 17 1f c0 57 b3 85 1d 7e 02 68 41 e2 97 8f bd 23 46 bb ef dd 03 76 bb 11 08 fe 9a cc 92 18 9f 56 50 aa 5e 85 d8 e8 c7 b6 7a c5 10 db a0 03 d3 d7 e1 63 50 bb 66 d4 50 13 ef d4 4c 9b 60 7c 0d 31 8c 4c 7d 1a 1f 5c bc 57 e2 06 11 80 4e 37 87 d7 b4 a4 b5 f0 8e d8 fd 70 bd ae ad e0 22 60 b1 2a b8 42 ef 69 0b 4a 3e e7 91 1e 84 1b 37 4e cd 5e bb bc 2a 54 d0 47 b6 00 33 6d d7 d0 c8 8b 4b c1 0e 58 ee 6c b6 56 de 72 47 fa 20 d8 e9 1d eb 84 62 86 08 cf 80 61 5b 62 e9 6c 14 91 c7 ac 37 55 eb 69 01 40 5d 34 74 fe 1a c7 9d 10 6a 0c ee 56 c2 57 7f c8 84 80 f9 6c b6 b8 c6 81 b7 b6 8b 53 c1 46 09 39 08 f3 50 88 81 75 bd fb 0b 1e 31 ad 61 e3 0b a0 ad fe 6d 22 3a a0 3c 07 83 b5 00 1a 57 58 7c 32 8a 9a fc fc fb 97 8d 1c d4 32 8f 7d 9d 60 53 0e 63 0b ef d9 6c 0c 81 6e e2 0b 01 00 76 8a e2 a6 df 51 fc 68 f1 72 74 0a 79 af 11 39 8e e3 be 12 52 49 1f a9 c6 93 47 9e 87 7f 94 ab 7c 5f 8c ad 48 02 03 e6 ab 7b 87 dd 71 e8 a0 72 91 13 df 17 f5 ee e8 6c e1 08 d1 d7 20 07 ec 1c d1 3c 85 a6 c1 49 62 1e 77 b7 d7 8d 80 5a 30 f0 be 03 0c 31 5e 54

{server} derive secret "tls13 c ap traffic":

PRK (32 octets): 11 31 54 5d 0b af 79 dd ce 9b 87 f0 69 45 78 1a
57 dd 18 ef 37 8d cd 20 60 f8 f9 a5 69 02 7e d8

hash (32 octets): 50 f6 3c bf 36 b0 dd 04 9e 7a 0b a2 7d 64 55 74
5e a2 aa ac 54 bb 16 7f 99 50 b2 b7 ce 95 09 da
Thomson                       Informational                    [Page 38]

RFC 8448                     TLS 1.3 Traces                 January 2019
info (54 octets): 00 20 12 74 6c 73 31 33 20 63 20 61 70 20 74 72
61 66 66 69 63 20 50 f6 3c bf 36 b0 dd 04 9e 7a 0b a2 7d 64 55 74 5e a2 aa ac 54 bb 16 7f 99 50 b2 b7 ce 95 09 da

expanded (32 octets): 75 ec f4 b9 72 52 5a a0 dc d0 57 c9 94 4d
4c d5 d8 26 71 d8 84 31 41 d7 dc 2a 4f f1 5a 21 dc 51

{server} derive secret "tls13 s ap traffic":

PRK (32 octets): 11 31 54 5d 0b af 79 dd ce 9b 87 f0 69 45 78 1a
57 dd 18 ef 37 8d cd 20 60 f8 f9 a5 69 02 7e d8

hash (32 octets): 50 f6 3c bf 36 b0 dd 04 9e 7a 0b a2 7d 64 55 74
5e a2 aa ac 54 bb 16 7f 99 50 b2 b7 ce 95 09 da

info (54 octets): 00 20 12 74 6c 73 31 33 20 73 20 61 70 20 74 72
61 66 66 69 63 20 50 f6 3c bf 36 b0 dd 04 9e 7a 0b a2 7d 64 55 74 5e a2 aa ac 54 bb 16 7f 99 50 b2 b7 ce 95 09 da

expanded (32 octets): 5c 74 f8 7d f0 42 25 db 0f 82 09 c9 de 64
29 e4 94 35 fd ef a7 ca d6 18 64 87 4d 12 f3 1c fc 8d

{server} derive secret "tls13 exp master":

PRK (32 octets): 11 31 54 5d 0b af 79 dd ce 9b 87 f0 69 45 78 1a
57 dd 18 ef 37 8d cd 20 60 f8 f9 a5 69 02 7e d8

hash (32 octets): 50 f6 3c bf 36 b0 dd 04 9e 7a 0b a2 7d 64 55 74
5e a2 aa ac 54 bb 16 7f 99 50 b2 b7 ce 95 09 da

info (52 octets): 00 20 10 74 6c 73 31 33 20 65 78 70 20 6d 61 73
74 65 72 20 50 f6 3c bf 36 b0 dd 04 9e 7a 0b a2 7d 64 55 74 5e a2 aa ac 54 bb 16 7f 99 50 b2 b7 ce 95 09 da

expanded (32 octets): 7c 06 d3 ae 10 6a 3a 37 4a ce 48 37 b3 98
5c ac 67 78 0a 6e 2c 5c 04 b5 83 19 d5 84 df 09 d2 23

{server} derive write traffic keys for application data:

PRK (32 octets): 5c 74 f8 7d f0 42 25 db 0f 82 09 c9 de 64 29 e4
94 35 fd ef a7 ca d6 18 64 87 4d 12 f3 1c fc 8d

key info (13 octets): 00 10 09 74 6c 73 31 33 20 6b 65 79 00

key expanded (16 octets): f2 7a 5d 97 bd 25 55 0c 48 23 b0 f3 e5
d2 93 88

iv info (12 octets): 00 0c 08 74 6c 73 31 33 20 69 76 00 iv expanded (12 octets): 0d d6 31 f7 b7 1c bb c7 97 c3 5f e7


Thomson                       Informational                    [Page 39]

RFC 8448                     TLS 1.3 Traces                 January 2019
{server} derive read traffic keys for handshake data:

PRK (32 octets): 15 8a a7 ab 88 55 07 35 82 b4 1d 67 4b 40 55 ca
bc c5 34 72 8f 65 93 14 86 1b 4e 08 e2 01 15 66

key info (13 octets): 00 10 09 74 6c 73 31 33 20 6b 65 79 00

key expanded (16 octets): 2f 1f 91 86 63 d5 90 e7 42 11 49 a2 9d
94 b0 b6

iv info (12 octets): 00 0c 08 74 6c 73 31 33 20 69 76 00

iv expanded (12 octets): 41 4d 54 85 23 5e 1a 68 87 93 bd 74

{client} extract secret "early" (same as server early secret)

{client} derive secret for handshake "tls13 derived":

PRK (32 octets): 33 ad 0a 1c 60 7e c0 3b 09 e6 cd 98 93 68 0c e2
10 ad f3 00 aa 1f 26 60 e1 b2 2e 10 f1 70 f9 2a

hash (32 octets): e3 b0 c4 42 98 fc 1c 14 9a fb f4 c8 99 6f b9 24
27 ae 41 e4 64 9b 93 4c a4 95 99 1b 78 52 b8 55

info (49 octets): 00 20 0d 74 6c 73 31 33 20 64 65 72 69 76 65 64
20 e3 b0 c4 42 98 fc 1c 14 9a fb f4 c8 99 6f b9 24 27 ae 41 e4 64 9b 93 4c a4 95 99 1b 78 52 b8 55

expanded (32 octets): 6f 26 15 a1 08 c7 02 c5 67 8f 54 fc 9d ba
b6 97 16 c0 76 18 9c 48 25 0c eb ea c3 57 6c 36 11 ba

{client} extract secret "handshake" (same as server handshake
secret)

{client} derive secret "tls13 c hs traffic" (same as server)

{client} derive secret "tls13 s hs traffic" (same as server)

{client} derive secret for master "tls13 derived" (same as server)

{client} extract secret "master" (same as server master secret)

{client} derive read traffic keys for handshake data (same as server
handshake data write traffic keys)

{client} calculate finished "tls13 finished" (same as server) {client} derive secret "tls13 c ap traffic" (same as server)


Thomson                       Informational                    [Page 40]

RFC 8448                     TLS 1.3 Traces                 January 2019
{client} derive secret "tls13 s ap traffic" (same as server)

{client} derive secret "tls13 exp master" (same as server)

{client} derive write traffic keys for handshake data (same as
server handshake data read traffic keys)

{client} derive read traffic keys for application data (same as
server application data write traffic keys)

{client} calculate finished "tls13 finished":

PRK (32 octets): 15 8a a7 ab 88 55 07 35 82 b4 1d 67 4b 40 55 ca
bc c5 34 72 8f 65 93 14 86 1b 4e 08 e2 01 15 66

hash (0 octets): (empty)

info (18 octets): 00 20 0e 74 6c 73 31 33 20 66 69 6e 69 73 68 65
64 00

expanded (32 octets): 81 be 41 31 fb b9 b6 f4 47 14 50 84 6f 74
fd 1e 68 c5 22 4b a7 c2 a8 67 7f 5c 53 ad 22 6f dc 13

finished (32 octets): 23 f5 2f db 07 09 a5 5b d7 f7 9b 99 1f 25
48 40 87 bc fd 4d 43 80 b1 23 26 a5 2a 28 b2 e3 68 e1

{client} construct a Finished handshake message:

Finished (36 octets): 14 00 00 20 23 f5 2f db 07 09 a5 5b d7 f7
9b 99 1f 25 48 40 87 bc fd 4d 43 80 b1 23 26 a5 2a 28 b2 e3 68 e1

{client} send handshake record:

payload (36 octets): 14 00 00 20 23 f5 2f db 07 09 a5 5b d7 f7 9b
99 1f 25 48 40 87 bc fd 4d 43 80 b1 23 26 a5 2a 28 b2 e3 68 e1

complete record (58 octets): 17 03 03 00 35 d7 4f 19 23 c6 62 fd
34 13 7c 6f 50 2f 3d d2 b9 3d 95 1d 1b 3b c9 7e 42 af e2 3c 31 ab ea 92 fe 91 b4 74 99 9e 85 e3 b7 91 ce 25 2f e8 c3 e9 f9 39 a4 12 0c b2

{client} derive write traffic keys for application data:

PRK (32 octets): 75 ec f4 b9 72 52 5a a0 dc d0 57 c9 94 4d 4c d5
d8 26 71 d8 84 31 41 d7 dc 2a 4f f1 5a 21 dc 51


Thomson                       Informational                    [Page 41]

RFC 8448                     TLS 1.3 Traces                 January 2019
key info (13 octets): 00 10 09 74 6c 73 31 33 20 6b 65 79 00

key expanded (16 octets): a7 eb 2a 05 25 eb 43 31 d5 8f cb f9 f7
ca 2e 9c

iv info (12 octets): 00 0c 08 74 6c 73 31 33 20 69 76 00

iv expanded (12 octets): 86 e8 be 22 7c 1b d2 b3 e3 9c b4 44

{client} derive secret "tls13 res master":

PRK (32 octets): 11 31 54 5d 0b af 79 dd ce 9b 87 f0 69 45 78 1a
57 dd 18 ef 37 8d cd 20 60 f8 f9 a5 69 02 7e d8

hash (32 octets): 0e 8b 34 91 58 b8 55 fd cd 0c 11 db bc 4e 83 e4
3c aa 6e 48 3c 6c 65 df 53 15 18 88 e5 01 65 f4

info (52 octets): 00 20 10 74 6c 73 31 33 20 72 65 73 20 6d 61 73
74 65 72 20 0e 8b 34 91 58 b8 55 fd cd 0c 11 db bc 4e 83 e4 3c aa 6e 48 3c 6c 65 df 53 15 18 88 e5 01 65 f4

expanded (32 octets): 09 17 0c 6d 47 27 21 56 6f 9c f9 9b 08 69
9d af f5 61 ec 8f b2 2d 5a 32 c3 f9 4c e0 09 b6 99 75

{server} calculate finished "tls13 finished" (same as client)

{server} derive read traffic keys for application data (same as
client application data write traffic keys)

{server} derive secret "tls13 res master" (same as client)

{client} send alert record:

payload (2 octets): 01 00

complete record (24 octets): 17 03 03 00 13 2e a6 cd f7 49 19 60
23 e2 b3 a4 94 91 69 55 36 42 60 47

{server} send alert record:

payload (2 octets): 01 00

complete record (24 octets): 17 03 03 00 13 51 9f c5 07 5c b0 88
43 49 75 9f f9 ef 6f 01 1b b4 c6 f2
Thomson                       Informational                    [Page 42]

RFC 8448                     TLS 1.3 Traces                 January 2019
6.  Client Authentication
In this example, the server requests client authentication. The client uses a certificate with an RSA key, the server uses an Elliptic Curve Digital Signature Algorithm (ECDSA) certificate with a P-256 key. Note that private keys for the certificates used in this example are not shown.

{client} create an ephemeral x25519 key pair:

private key (32 octets): c0 40 b2 bb 8f 3a dd d2 0f d4 05 8c 54
70 03 a3 c6 f9 c1 cd 91 5d 5e 53 5c 87 d8 d1 91 aa f0 71

public key (32 octets): 08 9c c2 67 1f 73 8d 9a 67 1e 5b 2e 46 49
81 d0 5b 76 e3 61 aa 22 ae a9 1f 1d 49 ca 10 a7 a3 62

{client} construct a ClientHello handshake message:

ClientHello (192 octets): 01 00 00 bc 03 03 6a 47 22 36 32 8b 83
af 40 38 6d 3a 3e 1f 1c e6 24 fa 4e d8 9a b8 65 a4 ff 0f 41 44 ce 3a e2 33 00 00 06 13 01 13 03 13 02 01 00 00 8d 00 00 00 0b 00 09 00 00 06 73 65 72 76 65 72 ff 01 00 01 00 00 0a 00 14 00 12 00 1d 00 17 00 18 00 19 01 00 01 01 01 02 01 03 01 04 00 33 00 26 00 24 00 1d 00 20 08 9c c2 67 1f 73 8d 9a 67 1e 5b 2e 46 49 81 d0 5b 76 e3 61 aa 22 ae a9 1f 1d 49 ca 10 a7 a3 62 00 2b 00 03 02 03 04 00 0d 00 20 00 1e 04 03 05 03 06 03 02 03 08 04 08 05 08 06 04 01 05 01 06 01 02 01 04 02 05 02 06 02 02 02 00 2d 00 02 01 01 00 1c 00 02 40 01

{client} send handshake record:

payload (192 octets): 01 00 00 bc 03 03 6a 47 22 36 32 8b 83 af
40 38 6d 3a 3e 1f 1c e6 24 fa 4e d8 9a b8 65 a4 ff 0f 41 44 ce 3a e2 33 00 00 06 13 01 13 03 13 02 01 00 00 8d 00 00 00 0b 00 09 00 00 06 73 65 72 76 65 72 ff 01 00 01 00 00 0a 00 14 00 12 00 1d 00 17 00 18 00 19 01 00 01 01 01 02 01 03 01 04 00 33 00 26 00 24 00 1d 00 20 08 9c c2 67 1f 73 8d 9a 67 1e 5b 2e 46 49 81 d0 5b 76 e3 61 aa 22 ae a9 1f 1d 49 ca 10 a7 a3 62 00 2b 00 03 02 03 04 00 0d 00 20 00 1e 04 03 05 03 06 03 02 03 08 04 08 05 08 06 04 01 05 01 06 01 02 01 04 02 05 02 06 02 02 02 00 2d 00 02 01 01 00 1c 00 02 40 01

complete record (197 octets): 16 03 01 00 c0 01 00 00 bc 03 03 6a
47 22 36 32 8b 83 af 40 38 6d 3a 3e 1f 1c e6 24 fa 4e d8 9a b8 65 a4 ff 0f 41 44 ce 3a e2 33 00 00 06 13 01 13 03 13 02 01 00 00 8d 00 00 00 0b 00 09 00 00 06 73 65 72 76 65 72 ff 01 00 01 00 00 0a 00 14 00 12 00 1d 00 17 00 18 00 19 01 00 01 01 01 02 01 03 01 04 00 33 00 26 00 24 00 1d 00 20 08 9c c2 67 1f 73 8d 9a 67 1e 5b 2e 46 49 81 d0 5b 76 e3 61 aa 22 ae a9 1f 1d 49 ca 10 a7 a3 62 00 2b 00 03 02 03 04 00 0d 00 20 00 1e 04 03 05 03 06 03 02 03 08 04 08 05 08 06 04 01 05 01 06 01 02 01 04 02 05 02 06 02 02 02 00 2d 00 02 01 01 00 1c 00 02 40 01


Thomson                       Informational                    [Page 43]

RFC 8448                     TLS 1.3 Traces                 January 2019
{server} extract secret "early":

salt: 0 (all zero octets)

IKM (32 octets): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

secret (32 octets): 33 ad 0a 1c 60 7e c0 3b 09 e6 cd 98 93 68 0c
e2 10 ad f3 00 aa 1f 26 60 e1 b2 2e 10 f1 70 f9 2a

{server} create an ephemeral x25519 key pair:

private key (32 octets): 73 82 a5 ad 1c dd 20 56 ae 18 cc 70 8b
d0 07 d9 81 30 db e2 cd 4d 9e ad 9b 96 95 2b ec bb 08 88

public key (32 octets): 6c 2e 50 e8 65 91 9a 6b 5a 12 df af 91 8f
92 b4 42 56 7b 0f 89 bc 54 47 8c 69 21 36 66 58 f0 62

{server} construct a ServerHello handshake message:

ServerHello (90 octets): 02 00 00 56 03 03 3b 50 fd f1 c3 d5 72
e4 0e 68 95 3e 7f ff 4e 27 58 45 9c 59 af a0 58 2c 0e a0 32 87 42 55 fe 6e 00 13 01 00 00 2e 00 33 00 24 00 1d 00 20 6c 2e 50 e8 65 91 9a 6b 5a 12 df af 91 8f 92 b4 42 56 7b 0f 89 bc 54 47 8c 69 21 36 66 58 f0 62 00 2b 00 02 03 04

{server} derive secret for handshake "tls13 derived":

PRK (32 octets): 33 ad 0a 1c 60 7e c0 3b 09 e6 cd 98 93 68 0c e2
10 ad f3 00 aa 1f 26 60 e1 b2 2e 10 f1 70 f9 2a

hash (32 octets): e3 b0 c4 42 98 fc 1c 14 9a fb f4 c8 99 6f b9 24
27 ae 41 e4 64 9b 93 4c a4 95 99 1b 78 52 b8 55

info (49 octets): 00 20 0d 74 6c 73 31 33 20 64 65 72 69 76 65 64
20 e3 b0 c4 42 98 fc 1c 14 9a fb f4 c8 99 6f b9 24 27 ae 41 e4 64 9b 93 4c a4 95 99 1b 78 52 b8 55

expanded (32 octets): 6f 26 15 a1 08 c7 02 c5 67 8f 54 fc 9d ba
b6 97 16 c0 76 18 9c 48 25 0c eb ea c3 57 6c 36 11 ba
Thomson                       Informational                    [Page 44]

RFC 8448                     TLS 1.3 Traces                 January 2019
{server} extract secret "handshake":

salt (32 octets): 6f 26 15 a1 08 c7 02 c5 67 8f 54 fc 9d ba b6 97
16 c0 76 18 9c 48 25 0c eb ea c3 57 6c 36 11 ba

IKM (32 octets): 7d c1 14 f6 47 5d fa 79 77 be 73 6e f7 cb eb c4
8c 70 32 9e 8e 9a 74 b4 d7 03 3c 43 f9 59 7d 4f

secret (32 octets): d9 95 24 36 74 fb 64 00 d7 d3 7b c0 e9 86 1b
db d9 ed 09 56 01 dc f2 99 48 74 f2 80 3d e2 2e 39

{server} derive secret "tls13 c hs traffic":

PRK (32 octets): d9 95 24 36 74 fb 64 00 d7 d3 7b c0 e9 86 1b db
d9 ed 09 56 01 dc f2 99 48 74 f2 80 3d e2 2e 39

hash (32 octets): 88 eb c0 42 bd 0d 5a 64 3b 22 fc a7 a4 7d ef d4
00 7d fe 18 49 49 a6 26 1c 59 6c 4e 00 2a 74 a2

info (54 octets): 00 20 12 74 6c 73 31 33 20 63 20 68 73 20 74 72
61 66 66 69 63 20 88 eb c0 42 bd 0d 5a 64 3b 22 fc a7 a4 7d ef d4 00 7d fe 18 49 49 a6 26 1c 59 6c 4e 00 2a 74 a2

expanded (32 octets): ce c7 a3 0c 68 72 07 0f 22 a7 ee b0 65 76
8d b6 7c 45 e2 95 33 db 87 99 08 ce 6d c6 6f 59 11 de

{server} derive secret "tls13 s hs traffic":

PRK (32 octets): d9 95 24 36 74 fb 64 00 d7 d3 7b c0 e9 86 1b db
d9 ed 09 56 01 dc f2 99 48 74 f2 80 3d e2 2e 39

hash (32 octets): 88 eb c0 42 bd 0d 5a 64 3b 22 fc a7 a4 7d ef d4
00 7d fe 18 49 49 a6 26 1c 59 6c 4e 00 2a 74 a2

info (54 octets): 00 20 12 74 6c 73 31 33 20 73 20 68 73 20 74 72
61 66 66 69 63 20 88 eb c0 42 bd 0d 5a 64 3b 22 fc a7 a4 7d ef d4 00 7d fe 18 49 49 a6 26 1c 59 6c 4e 00 2a 74 a2

expanded (32 octets): 8b 02 d3 c0 04 42 a2 72 2c 40 98 eb e8 67
5b 23 e8 01 51 0f 0d 7e d7 78 d8 eb 0b 8f 42 a1 9a 5e

{server} derive secret for master "tls13 derived":

PRK (32 octets): d9 95 24 36 74 fb 64 00 d7 d3 7b c0 e9 86 1b db
d9 ed 09 56 01 dc f2 99 48 74 f2 80 3d e2 2e 39

hash (32 octets): e3 b0 c4 42 98 fc 1c 14 9a fb f4 c8 99 6f b9 24
27 ae 41 e4 64 9b 93 4c a4 95 99 1b 78 52 b8 55


Thomson                       Informational                    [Page 45]

RFC 8448                     TLS 1.3 Traces                 January 2019
info (49 octets): 00 20 0d 74 6c 73 31 33 20 64 65 72 69 76 65 64
20 e3 b0 c4 42 98 fc 1c 14 9a fb f4 c8 99 6f b9 24 27 ae 41 e4 64 9b 93 4c a4 95 99 1b 78 52 b8 55

expanded (32 octets): 74 57 55 26 b0 7c 81 a9 c1 b1 7e 6b 34 e0
e6 d0 84 74 7a 61 f3 96 f5 97 eb b9 2c 07 36 ec 60 e8

{server} extract secret "master":

salt (32 octets): 74 57 55 26 b0 7c 81 a9 c1 b1 7e 6b 34 e0 e6 d0
84 74 7a 61 f3 96 f5 97 eb b9 2c 07 36 ec 60 e8

IKM (32 octets): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

secret (32 octets): 57 c1 5d 7b 9d 44 1b 3d 40 a9 c6 ea 8a 3d 73
0e 07 b3 a1 ea 7a 33 39 ed 70 70 b9 a7 4a 3f 4f 28

{server} send handshake record:

payload (90 octets): 02 00 00 56 03 03 3b 50 fd f1 c3 d5 72 e4 0e
68 95 3e 7f ff 4e 27 58 45 9c 59 af a0 58 2c 0e a0 32 87 42 55 fe 6e 00 13 01 00 00 2e 00 33 00 24 00 1d 00 20 6c 2e 50 e8 65 91 9a 6b 5a 12 df af 91 8f 92 b4 42 56 7b 0f 89 bc 54 47 8c 69 21 36 66 58 f0 62 00 2b 00 02 03 04

complete record (95 octets): 16 03 03 00 5a 02 00 00 56 03 03 3b
50 fd f1 c3 d5 72 e4 0e 68 95 3e 7f ff 4e 27 58 45 9c 59 af a0 58 2c 0e a0 32 87 42 55 fe 6e 00 13 01 00 00 2e 00 33 00 24 00 1d 00 20 6c 2e 50 e8 65 91 9a 6b 5a 12 df af 91 8f 92 b4 42 56 7b 0f 89 bc 54 47 8c 69 21 36 66 58 f0 62 00 2b 00 02 03 04

{server} derive write traffic keys for handshake data:

PRK (32 octets): 8b 02 d3 c0 04 42 a2 72 2c 40 98 eb e8 67 5b 23
e8 01 51 0f 0d 7e d7 78 d8 eb 0b 8f 42 a1 9a 5e

key info (13 octets): 00 10 09 74 6c 73 31 33 20 6b 65 79 00

key expanded (16 octets): 6c b6 e6 06 19 d8 c7 35 5c 5d 4c 4b c2
be 90 d5

iv info (12 octets): 00 0c 08 74 6c 73 31 33 20 69 76 00

iv expanded (12 octets): 64 f2 39 53 0c 3b 88 8f de 85 e0 be
Thomson                       Informational                    [Page 46]

RFC 8448                     TLS 1.3 Traces                 January 2019
{server} construct an EncryptedExtensions handshake message:

EncryptedExtensions (40 octets): 08 00 00 24 00 22 00 0a 00 14 00
12 00 1d 00 17 00 18 00 19 01 00 01 01 01 02 01 03 01 04 00 1c 00 02 40 01 00 00 00 00

{server} construct a CertificateRequest handshake message:

CertificateRequest (43 octets): 0d 00 00 27 00 00 24 00 0d 00 20
00 1e 04 03 05 03 06 03 02 03 08 04 08 05 08 06 04 01 05 01 06 01 02 01 04 02 05 02 06 02 02 02

{server} construct a Certificate handshake message:

Certificate (319 octets): 0b 00 01 3b 00 00 01 37 00 01 32 30 82
01 2e 30 81 d5 a0 03 02 01 02 02 01 07 30 0a 06 08 2a 86 48 ce 3d 04 03 02 30 13 31 11 30 0f 06 03 55 04 03 13 08 65 63 64 73 61 32 35 36 30 1e 17 0d 31 36 30 37 33 30 30 31 32 34 30 30 5a 17 0d 32 36 30 37 33 30 30 31 32 34 30 30 5a 30 13 31 11 30 0f 06 03 55 04 03 13 08 65 63 64 73 61 32 35 36 30 59 30 13 06 07 2a 86 48 ce 3d 02 01 06 08 2a 86 48 ce 3d 03 01 07 03 42 00 04 08 d5 30 16 15 75 f4 cf e7 f1 54 ee 34 48 18 00 86 00 1e 88 43 1a 79 ee 62 ee 6e 2f 83 ef 38 ba 61 e9 fb 37 f3 4e 00 7a 7d f4 d2 f5 b5 6d 1f 04 ec e4 5d 62 1f 46 84 06 f5 c3 a1 51 58 94 8d d0 a3 1a 30 18 30 09 06 03 55 1d 13 04 02 30 00 30 0b 06 03 55 1d 0f 04 04 03 02 07 80 30 0a 06 08 2a 86 48 ce 3d 04 03 02 03 48 00 30 45 02 21 00 df 30 fd 45 07 f5 ed d2 2c 1a 6f f8 6d b4 79 ca 69 3f ee ca 3b 71 b3 f9 ef 55 6b 29 37 c0 59 4d 02 20 62 e2 a4 72 50 d3 20 fe a8 3c 7e 2d cb 5b 76 a5 0e 02 00 c0 9a db d1 3f ee 94 6e 51 3e 01 1d 11 00 00

{server} construct a CertificateVerify handshake message:

CertificateVerify (79 octets): 0f 00 00 4b 04 03 00 47 30 45 02
21 00 d7 a4 d3 4b d5 4f 55 fe e1 a8 96 25 67 8c 3d d5 e5 f6 0d ac 73 ec 94 0c 5c 7b 93 04 a0 20 84 a9 02 20 28 9f 59 5e d4 88 b9 ac 68 9a 3d 19 2b 1a 8b b3 8f 34 af 78 74 c0 59 c9 80 6a 1f 38 26 93 53 e8

{server} calculate finished "tls13 finished":

PRK (32 octets): 8b 02 d3 c0 04 42 a2 72 2c 40 98 eb e8 67 5b 23
e8 01 51 0f 0d 7e d7 78 d8 eb 0b 8f 42 a1 9a 5e

hash (0 octets): (empty)

info (18 octets): 00 20 0e 74 6c 73 31 33 20 66 69 6e 69 73 68 65
64 00


Thomson                       Informational                    [Page 47]

RFC 8448                     TLS 1.3 Traces                 January 2019
expanded (32 octets): 4e 79 5c de 23 9d 5e 19 0e ae 44 1b 9e 71
6e eb 13 85 49 05 8c db 76 fa 9a ee af 54 8a ef 56 3e

finished (32 octets): 93 b7 0c df 47 81 98 5b 96 34 5c aa c7 01
b4 e7 50 d3 04 2d f1 a6 89 d8 fa ca 81 22 51 11 3c 11

{server} construct a Finished handshake message:

Finished (36 octets): 14 00 00 20 93 b7 0c df 47 81 98 5b 96 34
5c aa c7 01 b4 e7 50 d3 04 2d f1 a6 89 d8 fa ca 81 22 51 11 3c 11

{server} send handshake record:

payload (517 octets): 08 00 00 24 00 22 00 0a 00 14 00 12 00 1d
00 17 00 18 00 19 01 00 01 01 01 02 01 03 01 04 00 1c 00 02 40 01 00 00 00 00 0d 00 00 27 00 00 24 00 0d 00 20 00 1e 04 03 05 03 06 03 02 03 08 04 08 05 08 06 04 01 05 01 06 01 02 01 04 02 05 02 06 02 02 02 0b 00 01 3b 00 00 01 37 00 01 32 30 82 01 2e 30 81 d5 a0 03 02 01 02 02 01 07 30 0a 06 08 2a 86 48 ce 3d 04 03 02 30 13 31 11 30 0f 06 03 55 04 03 13 08 65 63 64 73 61 32 35 36 30 1e 17 0d 31 36 30 37 33 30 30 31 32 34 30 30 5a 17 0d 32 36 30 37 33 30 30 31 32 34 30 30 5a 30 13 31 11 30 0f 06 03 55 04 03 13 08 65 63 64 73 61 32 35 36 30 59 30 13 06 07 2a 86 48 ce 3d 02 01 06 08 2a 86 48 ce 3d 03 01 07 03 42 00 04 08 d5 30 16 15 75 f4 cf e7 f1 54 ee 34 48 18 00 86 00 1e 88 43 1a 79 ee 62 ee 6e 2f 83 ef 38 ba 61 e9 fb 37 f3 4e 00 7a 7d f4 d2 f5 b5 6d 1f 04 ec e4 5d 62 1f 46 84 06 f5 c3 a1 51 58 94 8d d0 a3 1a 30 18 30 09 06 03 55 1d 13 04 02 30 00 30 0b 06 03 55 1d 0f 04 04 03 02 07 80 30 0a 06 08 2a 86 48 ce 3d 04 03 02 03 48 00 30 45 02 21 00 df 30 fd 45 07 f5 ed d2 2c 1a 6f f8 6d b4 79 ca 69 3f ee ca 3b 71 b3 f9 ef 55 6b 29 37 c0 59 4d 02 20 62 e2 a4 72 50 d3 20 fe a8 3c 7e 2d cb 5b 76 a5 0e 02 00 c0 9a db d1 3f ee 94 6e 51 3e 01 1d 11 00 00 0f 00 00 4b 04 03 00 47 30 45 02 21 00 d7 a4 d3 4b d5 4f 55 fe e1 a8 96 25 67 8c 3d d5 e5 f6 0d ac 73 ec 94 0c 5c 7b 93 04 a0 20 84 a9 02 20 28 9f 59 5e d4 88 b9 ac 68 9a 3d 19 2b 1a 8b b3 8f 34 af 78 74 c0 59 c9 80 6a 1f 38 26 93 53 e8 14 00 00 20 93 b7 0c df 47 81 98 5b 96 34 5c aa c7 01 b4 e7 50 d3 04 2d f1 a6 89 d8 fa ca 81 22 51 11 3c 11

complete record (539 octets): 17 03 03 02 16 6d 0a 7a c0 79 b3 2a
94 aa 68 c4 e2 89 3e 8b d0 d3 c1 85 f5 49 c2 36 fb bc e3 d6 47 f0 8f 3c 94 a2 bf 42 4d 87 08 88 36 05 ad 89 55 f9 77 18 b0 21 3d ea d1 3d fb 23 eb b8 38 1d a5 82 75 66 12 bc b5 a5 d4 08 47 71 9f be 9f 17 9b fa e6 56 f3 ec fd 59 a4 c0 d3 51 32 ce 41 8a 7e 46 f6 b6 a6 06 22 f8 a6 c0 6b 28 d8 33 60 16 35 63 be 9c 37 f9 7e b9 02 32 69 24 a7 2b 3e d8 c8 38 12 77 d1 58 1c ab 9c 37 15 ac 24 01 39 84 67 ad 7e bf ab 3d 0c 34 19 e7 50 10 4f 7d 62 c5 02 79 01 f2 e4 cd 4c a5 b8 07 1e b0 3d 3c 73 2d 83 21 50 66 df c4 d2 91 d4 c1 ff 3b 8d 7e 42 98 f6 77 d4 d5 1d ea 11 68 d8 f1 6c b2 7b a4 02 66 31 3a 1f ed f9 e2 3c c7 7f 76 54 50 f9 e9 6f 05 d0 8f 3d a2 45 b1 4d 49 46 f0 7e c8 1e ed 6d 56 f2 6b d5 74 f0 b7 f7 c7 04 70 37 c1 6f ce 3b 23 75 4e 66 2f ad 73 e2 b7 21 3f 6a f2 96 76 9c 99 a1 d3 8e 62 32 e0 ec 8d c4 f8 4d 6a a6 f7 de 38 87 be 00 57 86 2f 90 18 e0 ab 39 67 05 aa 40 90 ab 5f 2d ff 63 25 a5 57 e7 32 0d 4e ff d4 6b b4 f9 97 d1 63 20 7c ce 66 65 29 4a a4 46 55 41 e3 fe 37 ee 73 50 65 9e a5 50 d6 dc b6 af 3c 51 88 52 c7 a1 4c 3c c1 5b c3 2b 32 73 bd f1 75 1d a1 84 20 31 35 b1 17 d3 00 20 4f b1 2d 58 ca 9a c3 4b 68 ec a2 70 30 83 2f 7a 4b 46 d2 a5 57 57 f6 3f e8 f6 e8 5a c4 74 69 e6 19 8d a8 8a 64 58 6b f2 3c 69 59 0d e8 22 26 3b e7 5f d8 36 84 72 40 c4 8f 8c 14 5c d6 bd 69 89 62 e7 ed c2 34 eb e5 92 31 35 1e ef 8d 76 52 cf 3b 08 ab 3a f6 e5 ec 74 c5 8a 8d a3 4b 39 f9 b0 d6 c4 27 9a 9a 1f 82 07 17 29 e7 05 9d d7 f7 b9 5b 94 33 c4 68 4c e1 89 1a 6d 33 43 2d 52 ed db 0b 8c ee 91 81 d4 03 ec cc 12 99 1f 1a d4 aa 62 c3 60 49 71 3a 7b b1 35 fd da 66 61 a0 5a 93 f8 c1 6f


Thomson                       Informational                    [Page 48]

RFC 8448                     TLS 1.3 Traces                 January 2019
{server} derive secret "tls13 c ap traffic":

PRK (32 octets): 57 c1 5d 7b 9d 44 1b 3d 40 a9 c6 ea 8a 3d 73 0e
07 b3 a1 ea 7a 33 39 ed 70 70 b9 a7 4a 3f 4f 28

hash (32 octets): 51 77 a2 9a f5 a1 7f 9b 49 33 e4 31 85 1d 12 83
45 36 6c 17 20 d3 8f 8f 04 65 ee ea e6 74 03 72

info (54 octets): 00 20 12 74 6c 73 31 33 20 63 20 61 70 20 74 72
61 66 66 69 63 20 51 77 a2 9a f5 a1 7f 9b 49 33 e4 31 85 1d 12 83 45 36 6c 17 20 d3 8f 8f 04 65 ee ea e6 74 03 72

expanded (32 octets): 73 c2 e8 90 fa 8d 06 72 58 d6 d5 0f a9 2f
e4 56 b0 98 cf 00 d9 72 7e ed 91 e8 89 2e f4 e6 f8 60

{server} derive secret "tls13 s ap traffic":

PRK (32 octets): 57 c1 5d 7b 9d 44 1b 3d 40 a9 c6 ea 8a 3d 73 0e
07 b3 a1 ea 7a 33 39 ed 70 70 b9 a7 4a 3f 4f 28

hash (32 octets): 51 77 a2 9a f5 a1 7f 9b 49 33 e4 31 85 1d 12 83
45 36 6c 17 20 d3 8f 8f 04 65 ee ea e6 74 03 72

info (54 octets): 00 20 12 74 6c 73 31 33 20 73 20 61 70 20 74 72
61 66 66 69 63 20 51 77 a2 9a f5 a1 7f 9b 49 33 e4 31 85 1d 12 83 45 36 6c 17 20 d3 8f 8f 04 65 ee ea e6 74 03 72




Thomson                       Informational                    [Page 49]

RFC 8448                     TLS 1.3 Traces                 January 2019
expanded (32 octets): c4 9a 91 fa f5 7f 8c 54 5d 50 48 a0 15 bf
84 9f f6 39 42 e4 a7 ed cd 31 9f 8b 43 8a 97 c5 2e 21

{server} derive secret "tls13 exp master":

PRK (32 octets): 57 c1 5d 7b 9d 44 1b 3d 40 a9 c6 ea 8a 3d 73 0e
07 b3 a1 ea 7a 33 39 ed 70 70 b9 a7 4a 3f 4f 28

hash (32 octets): 51 77 a2 9a f5 a1 7f 9b 49 33 e4 31 85 1d 12 83
45 36 6c 17 20 d3 8f 8f 04 65 ee ea e6 74 03 72

info (52 octets): 00 20 10 74 6c 73 31 33 20 65 78 70 20 6d 61 73
74 65 72 20 51 77 a2 9a f5 a1 7f 9b 49 33 e4 31 85 1d 12 83 45 36 6c 17 20 d3 8f 8f 04 65 ee ea e6 74 03 72

expanded (32 octets): 05 2e 39 79 5e 5f 2b e6 e4 e0 97 4c fd d8
6c 6a 7a fe 3e 57 e5 58 98 10 a3 cc cf 64 29 58 be b2

{server} derive write traffic keys for application data:

PRK (32 octets): c4 9a 91 fa f5 7f 8c 54 5d 50 48 a0 15 bf 84 9f
f6 39 42 e4 a7 ed cd 31 9f 8b 43 8a 97 c5 2e 21

key info (13 octets): 00 10 09 74 6c 73 31 33 20 6b 65 79 00

key expanded (16 octets): 88 b3 12 3d de ca df 8c 1b a2 98 e2 c1
81 76 b0

iv info (12 octets): 00 0c 08 74 6c 73 31 33 20 69 76 00

iv expanded (12 octets): 4e 09 78 51 3f 9d e8 32 7c 08 e4 f3

{server} derive read traffic keys for handshake data:

PRK (32 octets): ce c7 a3 0c 68 72 07 0f 22 a7 ee b0 65 76 8d b6
7c 45 e2 95 33 db 87 99 08 ce 6d c6 6f 59 11 de

key info (13 octets): 00 10 09 74 6c 73 31 33 20 6b 65 79 00

key expanded (16 octets): 91 69 48 f7 28 d9 82 3f a4 1a 00 4d 08
3f 21 7f

iv info (12 octets): 00 0c 08 74 6c 73 31 33 20 69 76 00

iv expanded (12 octets): 64 15 3d 79 ba c9 ea 10 ca 5a 0a 88

{client} extract secret "early" (same as server early secret) {client} derive secret for handshake "tls13 derived":



Thomson                       Informational                    [Page 50]

RFC 8448                     TLS 1.3 Traces                 January 2019
PRK (32 octets): 33 ad 0a 1c 60 7e c0 3b 09 e6 cd 98 93 68 0c e2
10 ad f3 00 aa 1f 26 60 e1 b2 2e 10 f1 70 f9 2a

hash (32 octets): e3 b0 c4 42 98 fc 1c 14 9a fb f4 c8 99 6f b9 24
27 ae 41 e4 64 9b 93 4c a4 95 99 1b 78 52 b8 55

info (49 octets): 00 20 0d 74 6c 73 31 33 20 64 65 72 69 76 65 64
20 e3 b0 c4 42 98 fc 1c 14 9a fb f4 c8 99 6f b9 24 27 ae 41 e4 64 9b 93 4c a4 95 99 1b 78 52 b8 55

expanded (32 octets): 6f 26 15 a1 08 c7 02 c5 67 8f 54 fc 9d ba
b6 97 16 c0 76 18 9c 48 25 0c eb ea c3 57 6c 36 11 ba

{client} extract secret "handshake" (same as server handshake
secret)

{client} derive secret "tls13 c hs traffic" (same as server)

{client} derive secret "tls13 s hs traffic" (same as server)

{client} derive secret for master "tls13 derived" (same as server)

{client} extract secret "master" (same as server master secret)

{client} derive read traffic keys for handshake data (same as server
handshake data write traffic keys)

{client} calculate finished "tls13 finished" (same as server)

{client} derive secret "tls13 c ap traffic" (same as server)

{client} derive secret "tls13 s ap traffic" (same as server)

{client} derive secret "tls13 exp master" (same as server)

{client} derive write traffic keys for handshake data (same as
server handshake data read traffic keys)

{client} derive read traffic keys for application data (same as
server application data write traffic keys)

{client} construct a Certificate handshake message:

Certificate (451 octets): 0b 00 01 bf 00 00 01 bb 00 01 b6 30 82
01 b2 30 82 01 1b a0 03 02 01 02 02 01 01 30 0d 06 09 2a 86 48 86 f7 0d 01 01 0b 05 00 30 11 31 0f 30 0d 06 03 55 04 03 13 06 63 6c 69 65 6e 74 30 1e 17 0d 31 36 30 37 33 30 30 31 32 33 35 39 5a 17 0d 32 36 30 37 33 30 30 31 32 33 35 39 5a 30 11 31 0f 30 0d 06 03 55 04 03 13 06 63 6c 69 65 6e 74 30 81 9f 30 0d 06 09 2a 86 48 86 f7 0d 01 01 01 05 00 03 81 8d 00 30 81 89 02 81 81 00 c3 81 75 e0 04 a6 8d 09 3f 82 3b 9c 37 9d 20 1f bc 0b b7 a1 c7 91 90 5e 3f bf 76 84 7e 44 e7 51 eb bc d3 60 bd 94 5c 81 e5 22 2b cc 88 46 d3 a8 a0 f9 3e 9b f5 be ba bd 92 ed f1 de 1f f1 90 21 70 3e 7a b6 c0 90 15 13 f9 7e 39 b1 11 f0 9c 93 48 97 1c 7b 21 19 84 a7 54 cd 45 fe 09 5a f0 ea 42 36 82 9b cc f7 a7 fe 9b 28 88 e7 8a b4 77 69 0a 5b 9e 1c cb e9 1c 6a 4a 0f 97 a7 e0 28 42 01 02 03 01 00 01 a3 1a 30 18 30 09 06 03 55 1d 13 04 02 30 00 30 0b 06 03 55 1d 0f 04 04 03 02 07 80 30 0d 06 09 2a 86 48 86 f7 0d 01 01 0b 05 00 03 81 81 00 1a 7a 5a 01 85 32 b0 22 af 07 67 d4 86 16 0c ff 2d 16 7a 19 15 d2 38 35 b5 45 94 91 6d c6 80 be 5d 2e 62 60 76 c5 d5 27 22 eb cc 77 5d 7d 99 f9 80 be 2f c9 4d 34 ac f6 cc 00 ba 90 cb cf b0 60 8a a1 e7 e3 97 1e f0 c0 7a 41 d4 7a d8 34 5d 1f 81 fe 41 8a 1c f4 10 54 42 9f d2 17 bd 77 7d c1 cf 08 f0 5d f9 07 99 c6 59 36 1e 0f 1a 8e e4 ac 0f 78 97 42 0b db c8 23 da 80 a2 f2 ba 23 08 1c 00 00


Thomson                       Informational                    [Page 51]

RFC 8448                     TLS 1.3 Traces                 January 2019
{client} construct a CertificateVerify handshake message:

CertificateVerify (136 octets): 0f 00 00 84 08 04 00 80 18 6b 22
23 b5 03 a7 59 c3 5d ba 0e 97 21 b4 b5 79 13 8d 5f 0f 5e 6e c7 fe aa f2 7f 3a d7 f3 86 c2 c7 bd 7c b2 be 52 fb f5 ed 83 93 f4 06 ee 79 36 96 92 ec 7a c6 95 65 1d 85 82 19 e6 72 a8 eb 7b 2a 67 7b 64 0b 46 ab 63 0e dc 5f 3f 2f 82 72 b9 c0 d9 06 f8 1f 84 dd c5 b8 c7 bc f9 55 c7 8a 3c f9 9e 50 16 f7 3e 04 eb 7d fc b2 88 33 f1 3e 8f 75 ec 2f f3 58 1e 2f 09 8a d4 15 7f d6 d6 ad

{client} calculate finished "tls13 finished":

PRK (32 octets): ce c7 a3 0c 68 72 07 0f 22 a7 ee b0 65 76 8d b6
7c 45 e2 95 33 db 87 99 08 ce 6d c6 6f 59 11 de

hash (0 octets): (empty)

info (18 octets): 00 20 0e 74 6c 73 31 33 20 66 69 6e 69 73 68 65
64 00

expanded (32 octets): 4f dd d7 6b bc b8 e3 0c 72 61 b1 db 40 1b
b1 36 ed 39 bc e6 a4 81 5a 21 24 47 6e 27 e6 cb cb f6

finished (32 octets): 9a fe 2b a2 f6 3a 09 d2 29 d8 a4 29 e5 b3
7f fd 9f cc 73 bd b5 91 1b 82 42 59 72 aa 28 92 44 0f
Thomson                       Informational                    [Page 52]

RFC 8448                     TLS 1.3 Traces                 January 2019
{client} construct a Finished handshake message:

Finished (36 octets): 14 00 00 20 9a fe 2b a2 f6 3a 09 d2 29 d8
a4 29 e5 b3 7f fd 9f cc 73 bd b5 91 1b 82 42 59 72 aa 28 92 44 0f

{client} send handshake record:

payload (623 octets): 0b 00 01 bf 00 00 01 bb 00 01 b6 30 82 01
b2 30 82 01 1b a0 03 02 01 02 02 01 01 30 0d 06 09 2a 86 48 86 f7 0d 01 01 0b 05 00 30 11 31 0f 30 0d 06 03 55 04 03 13 06 63 6c 69 65 6e 74 30 1e 17 0d 31 36 30 37 33 30 30 31 32 33 35 39 5a 17 0d 32 36 30 37 33 30 30 31 32 33 35 39 5a 30 11 31 0f 30 0d 06 03 55 04 03 13 06 63 6c 69 65 6e 74 30 81 9f 30 0d 06 09 2a 86 48 86 f7 0d 01 01 01 05 00 03 81 8d 00 30 81 89 02 81 81 00 c3 81 75 e0 04 a6 8d 09 3f 82 3b 9c 37 9d 20 1f bc 0b b7 a1 c7 91 90 5e 3f bf 76 84 7e 44 e7 51 eb bc d3 60 bd 94 5c 81 e5 22 2b cc 88 46 d3 a8 a0 f9 3e 9b f5 be ba bd 92 ed f1 de 1f f1 90 21 70 3e 7a b6 c0 90 15 13 f9 7e 39 b1 11 f0 9c 93 48 97 1c 7b 21 19 84 a7 54 cd 45 fe 09 5a f0 ea 42 36 82 9b cc f7 a7 fe 9b 28 88 e7 8a b4 77 69 0a 5b 9e 1c cb e9 1c 6a 4a 0f 97 a7 e0 28 42 01 02 03 01 00 01 a3 1a 30 18 30 09 06 03 55 1d 13 04 02 30 00 30 0b 06 03 55 1d 0f 04 04 03 02 07 80 30 0d 06 09 2a 86 48 86 f7 0d 01 01 0b 05 00 03 81 81 00 1a 7a 5a 01 85 32 b0 22 af 07 67 d4 86 16 0c ff 2d 16 7a 19 15 d2 38 35 b5 45 94 91 6d c6 80 be 5d 2e 62 60 76 c5 d5 27 22 eb cc 77 5d 7d 99 f9 80 be 2f c9 4d 34 ac f6 cc 00 ba 90 cb cf b0 60 8a a1 e7 e3 97 1e f0 c0 7a 41 d4 7a d8 34 5d 1f 81 fe 41 8a 1c f4 10 54 42 9f d2 17 bd 77 7d c1 cf 08 f0 5d f9 07 99 c6 59 36 1e 0f 1a 8e e4 ac 0f 78 97 42 0b db c8 23 da 80 a2 f2 ba 23 08 1c 00 00 0f 00 00 84 08 04 00 80 18 6b 22 23 b5 03 a7 59 c3 5d ba 0e 97 21 b4 b5 79 13 8d 5f 0f 5e 6e c7 fe aa f2 7f 3a d7 f3 86 c2 c7 bd 7c b2 be 52 fb f5 ed 83 93 f4 06 ee 79 36 96 92 ec 7a c6 95 65 1d 85 82 19 e6 72 a8 eb 7b 2a 67 7b 64 0b 46 ab 63 0e dc 5f 3f 2f 82 72 b9 c0 d9 06 f8 1f 84 dd c5 b8 c7 bc f9 55 c7 8a 3c f9 9e 50 16 f7 3e 04 eb 7d fc b2 88 33 f1 3e 8f 75 ec 2f f3 58 1e 2f 09 8a d4 15 7f d6 d6 ad 14 00 00 20 9a fe 2b a2 f6 3a 09 d2 29 d8 a4 29 e5 b3 7f fd 9f cc 73 bd b5 91 1b 82 42 59 72 aa 28 92 44 0f

complete record (645 octets): 17 03 03 02 80 b4 6a 63 93 4e 67 38
41 ab af 26 74 03 bc 67 7f 6b 6d 2a 1e 2f 12 bb 5f 62 68 3b fe 36 a8 26 73 f0 6d 62 87 dd d6 09 bc f2 f5 fd 32 25 92 3d 24 af 3c 76 68 2c 18 0e e5 71 a1 7c a4 bf be 2f 51 0d c9 a0 e1 fc a5 cf f2 ce e8 7d 11 cb 53 1a 6e f9 0b f5 30 9a 6b 63 bb bc 0b 88 ea 45 10 3a 43 04 09 15 43 85 9f a1 1e c0 32 ed 87 34 44 cd 51 85 ea d5 f6 a7 64 20 f0 f0 28 6a ce f8 02 c8 e4 78 8c 23 27 5f 1b 06 da 60 0f 4a 7d ec d0 bc 59 d7 be f1 0e 64 9a e3 26 90 39 7f c3 d4 ed 6f 30 f8 01 d8 cd 56 9b 71 ad 4f a0 5e a7 cf 2a c2 df a1 50 d2 20 50 5d 40 11 b3 4d 09 d5 38 53 eb a6 1a 10 1e 4f 8d ca 47 d8 17 1a 88 4b 19 25 9a 3d d4 8c 5a c1 41 98 3e dc 77 81 4d 25 e7 f6 6b bb db 90 96 83 92 66 e0 65 61 82 8e cf b2 7e af d4 e9 e8 1a 0b 96 e3 bf a4 2d ae 5a d8 03 59 b9 a6 66 14 02 c3 a2 10 41 77 03 01 06 db d8 f6 5b b6 a0 15 9d 51 2e b1 3a f2 2a 25 9f 31 3b d5 8c 2e 21 fe 05 3d 57 f2 a9 62 b0 a4 ea 68 2c 96 f7 0b 79 b5 60 13 61 92 82 3b 27 be 6a 2f b7 b1 c7 51 cc c0 e3 30 36 15 54 14 85 b7 b3 07 b4 23 33 2c 11 ef a8 0b 72 f9 b8 0a 53 e5 3f 7b b3 8a 3a f4 c5 9f 80 08 ba d0 54 4e 56 14 e6 88 ff 57 bc cd 69 35 f8 1f 44 7f 42 0c 1c 1b f4 05 88 18 e9 0b f5 dc 71 6c ca e4 25 24 85 6d f8 25 0b cd bd 7a f6 5f 82 dd 53 06 1d 02 4f 6d 2f f5 c1 1e 37 92 a9 a7 0e 0e e2 a3 c2 0a 1b 96 8a c3 91 f8 f9 28 31 13 5d 25 24 2a da 2f e2 41 c2 65 3e c9 96 33 9d fa 12 df ae 7a 33 73 df 88 b0 7c a2 7a ef 6d c2 66 a2 5f 13 f7 5c 76 03 9c 1f 46 fd 7a 53 ae 63 99 c9 99 f4 b2 ae e1 8e 48 0d 6d 12 bf ae 22 6b bd c9 2a 6a d5 0b 4d 3b ac 7a bc 3b 36 51 eb 5b e5 6f 33 bf 41 12 7b 3c a8 86 dc 71 4a 50 d1 49 03 57 bd 40 d9 fd 6b e4 22 09 a4 dd b9 eb b2 98 7e 29 f1 20 f0 58 14 61 4d 2c 79 32 00 15 b4 61 fe 73 24 44 76 70 a1 af 5f 65 ca ed 15 b4 74 ab 7f aa 49 50 16 ad f8 08 e5 3b 94 ef 54 af bb 0e 0a 3a 27 32 ab 59 7f 7d 59 23 c7 73 86 aa 51 24 73 1f 8c c7 3e 70 3b 34 1c 17 5a 45 49 39 a7 7a b6 43 13 c1 5c f3 fe 03 c4 f3 38 42 56 49 76


Thomson                       Informational                    [Page 53]

RFC 8448                     TLS 1.3 Traces                 January 2019
{client} derive write traffic keys for application data:

PRK (32 octets): 73 c2 e8 90 fa 8d 06 72 58 d6 d5 0f a9 2f e4 56
b0 98 cf 00 d9 72 7e ed 91 e8 89 2e f4 e6 f8 60

key info (13 octets): 00 10 09 74 6c 73 31 33 20 6b 65 79 00

key expanded (16 octets): cd c0 9c 80 6a a8 f8 6d fc d5 1e fc 44
a0 c0 39

iv info (12 octets): 00 0c 08 74 6c 73 31 33 20 69 76 00

iv expanded (12 octets): 6e f8 52 e7 8b 46 d9 13 66 8e 53 e7

{client} derive secret "tls13 res master":

PRK (32 octets): 57 c1 5d 7b 9d 44 1b 3d 40 a9 c6 ea 8a 3d 73 0e
07 b3 a1 ea 7a 33 39 ed 70 70 b9 a7 4a 3f 4f 28

hash (32 octets): 39 1d 00 4b d8 4c 83 1b 15 82 44 44 14 b4 dc 80
64 01 0e cc 76 f3 7f 88 bf eb 1e 88 fe 13 5c 25
Thomson                       Informational                    [Page 54]

RFC 8448                     TLS 1.3 Traces                 January 2019
info (52 octets): 00 20 10 74 6c 73 31 33 20 72 65 73 20 6d 61 73
74 65 72 20 39 1d 00 4b d8 4c 83 1b 15 82 44 44 14 b4 dc 80 64 01 0e cc 76 f3 7f 88 bf eb 1e 88 fe 13 5c 25

expanded (32 octets): 10 06 dc cb f4 0e b4 eb 97 8b ff 03 92 a9
e4 52 a4 fb ad 58 aa 14 78 4d 5a 24 1c 6b 49 da cc fb

{server} calculate finished "tls13 finished" (same as client)

{server} derive read traffic keys for application data (same as
client application data write traffic keys)

{server} derive secret "tls13 res master" (same as client)

{client} send alert record:

payload (2 octets): 01 00

complete record (24 octets): 17 03 03 00 13 e4 ad 7d 44 c2 92 45
33 9d 35 59 62 c7 79 b8 9e f4 4c 58

{server} send alert record:

payload (2 octets): 01 00

complete record (24 octets): 17 03 03 00 13 1d ec c5 d6 e6 4b ba
8a 6f 21 b4 fd 07 74 97 da 2a 90 cb
7.  Compatibility Mode
This example shows use of the handshake with the client requesting that the server use compatibility mode as defined in Appendix D.4 of [TLS13].

{client} create an ephemeral x25519 key pair:

private key (32 octets): de a0 0b 45 69 5d c7 81 f1 9d 34 a6 2c
1a fd 31 ab 43 69 af 1e 85 5a 3b bb 25 8d 84 42 cd e6 d7

public key (32 octets): 8e 72 92 cf 30 56 db b0 d2 5f cb e5 5c 10
7d c9 bb f8 3d d9 70 8f 39 20 3b a3 41 24 9a 7d 9b 63

{client} construct a ClientHello handshake message:

ClientHello (224 octets): 01 00 00 dc 03 03 4e 64 0a 3f 2c 27 38
f0 9c 94 18 bd 78 ed cc d7 55 9d 05 31 19 92 76 d4 d9 2a 0e 9e e9 d7 7d 09 20 a8 0c 16 55 81 a8 e0 d0 6c 00 18 d5 4d 3a 06 dd 32 cf d4 05 1e b0 26 fa d3 fd 0b a9 92 69 e6 ef 00 06 13 01 13 03 13 02 01 00 00 8d 00 00 00 0b 00 09 00 00 06 73 65 72 76 65 72 ff 01 00 01 00 00 0a 00 14 00 12 00 1d 00 17 00 18 00 19 01 00 01 01 01 02 01 03 01 04 00 33 00 26 00 24 00 1d 00 20 8e 72 92 cf 30 56 db b0 d2 5f cb e5 5c 10 7d c9 bb f8 3d d9 70 8f 39 20 3b a3 41 24 9a 7d 9b 63 00 2b 00 03 02 03 04 00 0d 00 20 00 1e 04 03 05 03 06 03 02 03 08 04 08 05 08 06 04 01 05 01 06 01 02 01 04 02 05 02 06 02 02 02 00 2d 00 02 01 01 00 1c 00 02 40 01


Thomson                       Informational                    [Page 55]

RFC 8448                     TLS 1.3 Traces                 January 2019
{client} send handshake record:

payload (224 octets): 01 00 00 dc 03 03 4e 64 0a 3f 2c 27 38 f0
9c 94 18 bd 78 ed cc d7 55 9d 05 31 19 92 76 d4 d9 2a 0e 9e e9 d7 7d 09 20 a8 0c 16 55 81 a8 e0 d0 6c 00 18 d5 4d 3a 06 dd 32 cf d4 05 1e b0 26 fa d3 fd 0b a9 92 69 e6 ef 00 06 13 01 13 03 13 02 01 00 00 8d 00 00 00 0b 00 09 00 00 06 73 65 72 76 65 72 ff 01 00 01 00 00 0a 00 14 00 12 00 1d 00 17 00 18 00 19 01 00 01 01 01 02 01 03 01 04 00 33 00 26 00 24 00 1d 00 20 8e 72 92 cf 30 56 db b0 d2 5f cb e5 5c 10 7d c9 bb f8 3d d9 70 8f 39 20 3b a3 41 24 9a 7d 9b 63 00 2b 00 03 02 03 04 00 0d 00 20 00 1e 04 03 05 03 06 03 02 03 08 04 08 05 08 06 04 01 05 01 06 01 02 01 04 02 05 02 06 02 02 02 00 2d 00 02 01 01 00 1c 00 02 40 01

complete record (229 octets): 16 03 01 00 e0 01 00 00 dc 03 03 4e
64 0a 3f 2c 27 38 f0 9c 94 18 bd 78 ed cc d7 55 9d 05 31 19 92 76 d4 d9 2a 0e 9e e9 d7 7d 09 20 a8 0c 16 55 81 a8 e0 d0 6c 00 18 d5 4d 3a 06 dd 32 cf d4 05 1e b0 26 fa d3 fd 0b a9 92 69 e6 ef 00 06 13 01 13 03 13 02 01 00 00 8d 00 00 00 0b 00 09 00 00 06 73 65 72 76 65 72 ff 01 00 01 00 00 0a 00 14 00 12 00 1d 00 17 00 18 00 19 01 00 01 01 01 02 01 03 01 04 00 33 00 26 00 24 00 1d 00 20 8e 72 92 cf 30 56 db b0 d2 5f cb e5 5c 10 7d c9 bb f8 3d d9 70 8f 39 20 3b a3 41 24 9a 7d 9b 63 00 2b 00 03 02 03 04 00 0d 00 20 00 1e 04 03 05 03 06 03 02 03 08 04 08 05 08 06 04 01 05 01 06 01 02 01 04 02 05 02 06 02 02 02 00 2d 00 02 01 01 00 1c 00 02 40 01

{server} extract secret "early":

salt: 0 (all zero octets)

IKM (32 octets): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

secret (32 octets): 33 ad 0a 1c 60 7e c0 3b 09 e6 cd 98 93 68 0c
e2 10 ad f3 00 aa 1f 26 60 e1 b2 2e 10 f1 70 f9 2a
Thomson                       Informational                    [Page 56]

RFC 8448                     TLS 1.3 Traces                 January 2019
{server} create an ephemeral x25519 key pair:

private key (32 octets): 01 7c 38 a3 64 79 21 ca 2d 9e d6 bd 7a
e7 13 2b 94 21 1b 13 31 bb 20 8c 8c cd d5 15 56 40 99 95

public key (32 octets): 3e 30 f0 f4 ba 55 1a fd 62 76 83 41 17 5f
52 65 e4 da f0 c8 84 16 17 aa 4f af dd 21 42 32 0c 22

{server} construct a ServerHello handshake message:

ServerHello (122 octets): 02 00 00 76 03 03 e5 dd 59 48 c4 35 f7
a3 8f 0f 01 30 70 8d c3 22 d9 df 09 ab d4 83 81 17 c1 83 a7 bb 6d 99 4f 2c 20 a8 0c 16 55 81 a8 e0 d0 6c 00 18 d5 4d 3a 06 dd 32 cf d4 05 1e b0 26 fa d3 fd 0b a9 92 69 e6 ef 13 01 00 00 2e 00 33 00 24 00 1d 00 20 3e 30 f0 f4 ba 55 1a fd 62 76 83 41 17 5f 52 65 e4 da f0 c8 84 16 17 aa 4f af dd 21 42 32 0c 22 00 2b 00 02 03 04

{server} send handshake record:

payload (122 octets): 02 00 00 76 03 03 e5 dd 59 48 c4 35 f7 a3
8f 0f 01 30 70 8d c3 22 d9 df 09 ab d4 83 81 17 c1 83 a7 bb 6d 99 4f 2c 20 a8 0c 16 55 81 a8 e0 d0 6c 00 18 d5 4d 3a 06 dd 32 cf d4 05 1e b0 26 fa d3 fd 0b a9 92 69 e6 ef 13 01 00 00 2e 00 33 00 24 00 1d 00 20 3e 30 f0 f4 ba 55 1a fd 62 76 83 41 17 5f 52 65 e4 da f0 c8 84 16 17 aa 4f af dd 21 42 32 0c 22 00 2b 00 02 03 04

complete record (127 octets): 16 03 03 00 7a 02 00 00 76 03 03 e5
dd 59 48 c4 35 f7 a3 8f 0f 01 30 70 8d c3 22 d9 df 09 ab d4 83 81 17 c1 83 a7 bb 6d 99 4f 2c 20 a8 0c 16 55 81 a8 e0 d0 6c 00 18 d5 4d 3a 06 dd 32 cf d4 05 1e b0 26 fa d3 fd 0b a9 92 69 e6 ef 13 01 00 00 2e 00 33 00 24 00 1d 00 20 3e 30 f0 f4 ba 55 1a fd 62 76 83 41 17 5f 52 65 e4 da f0 c8 84 16 17 aa 4f af dd 21 42 32 0c 22 00 2b 00 02 03 04

{server} send change_cipher_spec record:

payload (1 octets): 01

complete record (6 octets): 14 03 03 00 01 01

{server} derive secret for handshake "tls13 derived":

PRK (32 octets): 33 ad 0a 1c 60 7e c0 3b 09 e6 cd 98 93 68 0c e2
10 ad f3 00 aa 1f 26 60 e1 b2 2e 10 f1 70 f9 2a




Thomson                       Informational                    [Page 57]

RFC 8448                     TLS 1.3 Traces                 January 2019
hash (32 octets): e3 b0 c4 42 98 fc 1c 14 9a fb f4 c8 99 6f b9 24
27 ae 41 e4 64 9b 93 4c a4 95 99 1b 78 52 b8 55

info (49 octets): 00 20 0d 74 6c 73 31 33 20 64 65 72 69 76 65 64
20 e3 b0 c4 42 98 fc 1c 14 9a fb f4 c8 99 6f b9 24 27 ae 41 e4 64 9b 93 4c a4 95 99 1b 78 52 b8 55

expanded (32 octets): 6f 26 15 a1 08 c7 02 c5 67 8f 54 fc 9d ba
b6 97 16 c0 76 18 9c 48 25 0c eb ea c3 57 6c 36 11 ba

{server} extract secret "handshake":

salt (32 octets): 6f 26 15 a1 08 c7 02 c5 67 8f 54 fc 9d ba b6 97
16 c0 76 18 9c 48 25 0c eb ea c3 57 6c 36 11 ba

IKM (32 octets): ee f7 90 55 90 77 db 5b b6 3b 66 84 e4 16 9f 05
1e 8f b3 4c e5 9b af ce 2f 9c 8e e6 8c c4 eb 79

secret (32 octets): f9 17 61 35 4a 67 e9 b0 7c 6d cc 3a 55 70 7e
fa 69 c4 51 9d 80 40 e5 f2 15 12 1e 0d f6 9a fa 4a

{server} derive secret "tls13 c hs traffic":

PRK (32 octets): f9 17 61 35 4a 67 e9 b0 7c 6d cc 3a 55 70 7e fa
69 c4 51 9d 80 40 e5 f2 15 12 1e 0d f6 9a fa 4a

hash (32 octets): 74 5c 55 ba c3 99 31 0b 7b 5a 7c 81 a2 c1 30 b4
d5 6d ff 6f 68 c3 ab 47 78 57 60 1e 01 f1 f8 d1

info (54 octets): 00 20 12 74 6c 73 31 33 20 63 20 68 73 20 74 72
61 66 66 69 63 20 74 5c 55 ba c3 99 31 0b 7b 5a 7c 81 a2 c1 30 b4 d5 6d ff 6f 68 c3 ab 47 78 57 60 1e 01 f1 f8 d1

expanded (32 octets): 2c 3c b2 4a 10 81 ed b5 95 18 ee 68 61 e8
9a 6b 72 b3 80 1a fe 77 13 e4 cb bc 21 c0 79 5b f8 31

{server} derive secret "tls13 s hs traffic":

PRK (32 octets): f9 17 61 35 4a 67 e9 b0 7c 6d cc 3a 55 70 7e fa
69 c4 51 9d 80 40 e5 f2 15 12 1e 0d f6 9a fa 4a

hash (32 octets): 74 5c 55 ba c3 99 31 0b 7b 5a 7c 81 a2 c1 30 b4
d5 6d ff 6f 68 c3 ab 47 78 57 60 1e 01 f1 f8 d1

info (54 octets): 00 20 12 74 6c 73 31 33 20 73 20 68 73 20 74 72
61 66 66 69 63 20 74 5c 55 ba c3 99 31 0b 7b 5a 7c 81 a2 c1 30 b4 d5 6d ff 6f 68 c3 ab 47 78 57 60 1e 01 f1 f8 d1



Thomson                       Informational                    [Page 58]

RFC 8448                     TLS 1.3 Traces                 January 2019
expanded (32 octets): ca ce 3d 55 5c c1 c5 77 cf 97 0c ff 28 cf
97 8d 6a 98 00 08 54 42 e1 8d 69 5b 50 f3 15 1d 18 c8

{server} derive secret for master "tls13 derived":

PRK (32 octets): f9 17 61 35 4a 67 e9 b0 7c 6d cc 3a 55 70 7e fa
69 c4 51 9d 80 40 e5 f2 15 12 1e 0d f6 9a fa 4a

hash (32 octets): e3 b0 c4 42 98 fc 1c 14 9a fb f4 c8 99 6f b9 24
27 ae 41 e4 64 9b 93 4c a4 95 99 1b 78 52 b8 55

info (49 octets): 00 20 0d 74 6c 73 31 33 20 64 65 72 69 76 65 64
20 e3 b0 c4 42 98 fc 1c 14 9a fb f4 c8 99 6f b9 24 27 ae 41 e4 64 9b 93 4c a4 95 99 1b 78 52 b8 55

expanded (32 octets): 5d a1 2d c4 78 35 ba 73 fd d9 94 b1 4a b7
e6 3c c6 3f 0d 79 16 2f 67 56 e9 a4 67 56 c8 b2 b6 42

{server} extract secret "master":

salt (32 octets): 5d a1 2d c4 78 35 ba 73 fd d9 94 b1 4a b7 e6 3c
c6 3f 0d 79 16 2f 67 56 e9 a4 67 56 c8 b2 b6 42

IKM (32 octets): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

secret (32 octets): 62 81 12 da e2 f7 02 48 80 63 e4 2d e6 c8 50
a5 c0 82 0b 90 90 3e 00 ab c3 18 75 da 03 d4 bc 5b

{server} derive write traffic keys for handshake data:

PRK (32 octets): ca ce 3d 55 5c c1 c5 77 cf 97 0c ff 28 cf 97 8d
6a 98 00 08 54 42 e1 8d 69 5b 50 f3 15 1d 18 c8

key info (13 octets): 00 10 09 74 6c 73 31 33 20 6b 65 79 00

key expanded (16 octets): 04 10 91 fd ab 29 f2 c8 ab fb 15 6d c5
fc 8d 54

iv info (12 octets): 00 0c 08 74 6c 73 31 33 20 69 76 00

iv expanded (12 octets): 74 64 d7 91 68 5d e0 59 98 fc ba db

{server} construct an EncryptedExtensions handshake message:

EncryptedExtensions (40 octets): 08 00 00 24 00 22 00 0a 00 14 00
12 00 1d 00 17 00 18 00 19 01 00 01 01 01 02 01 03 01 04 00 1c 00 02 40 01 00 00 00 00


Thomson                       Informational                    [Page 59]

RFC 8448                     TLS 1.3 Traces                 January 2019
{server} construct a Certificate handshake message:

Certificate (445 octets): 0b 00 01 b9 00 00 01 b5 00 01 b0 30 82
01 ac 30 82 01 15 a0 03 02 01 02 02 01 02 30 0d 06 09 2a 86 48 86 f7 0d 01 01 0b 05 00 30 0e 31 0c 30 0a 06 03 55 04 03 13 03 72 73 61 30 1e 17 0d 31 36 30 37 33 30 30 31 32 33 35 39 5a 17 0d 32 36 30 37 33 30 30 31 32 33 35 39 5a 30 0e 31 0c 30 0a 06 03 55 04 03 13 03 72 73 61 30 81 9f 30 0d 06 09 2a 86 48 86 f7 0d 01 01 01 05 00 03 81 8d 00 30 81 89 02 81 81 00 b4 bb 49 8f 82 79 30 3d 98 08 36 39 9b 36 c6 98 8c 0c 68 de 55 e1 bd b8 26 d3 90 1a 24 61 ea fd 2d e4 9a 91 d0 15 ab bc 9a 95 13 7a ce 6c 1a f1 9e aa 6a f9 8c 7c ed 43 12 09 98 e1 87 a8 0e e0 cc b0 52 4b 1b 01 8c 3e 0b 63 26 4d 44 9a 6d 38 e2 2a 5f da 43 08 46 74 80 30 53 0e f0 46 1c 8c a9 d9 ef bf ae 8e a6 d1 d0 3e 2b d1 93 ef f0 ab 9a 80 02 c4 74 28 a6 d3 5a 8d 88 d7 9f 7f 1e 3f 02 03 01 00 01 a3 1a 30 18 30 09 06 03 55 1d 13 04 02 30 00 30 0b 06 03 55 1d 0f 04 04 03 02 05 a0 30 0d 06 09 2a 86 48 86 f7 0d 01 01 0b 05 00 03 81 81 00 85 aa d2 a0 e5 b9 27 6b 90 8c 65 f7 3a 72 67 17 06 18 a5 4c 5f 8a 7b 33 7d 2d f7 a5 94 36 54 17 f2 ea e8 f8 a5 8c 8f 81 72 f9 31 9c f3 6b 7f d6 c5 5b 80 f2 1a 03 01 51 56 72 60 96 fd 33 5e 5e 67 f2 db f1 02 70 2e 60 8c ca e6 be c1 fc 63 a4 2a 99 be 5c 3e b7 10 7c 3c 54 e9 b9 eb 2b d5 20 3b 1c 3b 84 e0 a8 b2 f7 59 40 9b a3 ea c9 d9 1d 40 2d cc 0c c8 f8 96 12 29 ac 91 87 b4 2b 4d e1 00 00

{server} construct a CertificateVerify handshake message:

CertificateVerify (136 octets): 0f 00 00 84 08 04 00 80 a2 30 1a
68 dd 1c ee e6 93 8f e9 d4 0c 46 b9 20 1b 34 d5 99 52 a3 7e 06 52 3a 39 cf 8b a6 c9 c8 b6 8a e9 44 92 af 78 05 16 ed 7b 73 c8 28 12 e9 9d d3 fa be a4 5e 09 d9 c6 84 87 21 c2 80 8c 61 50 1b 0c 75 e7 fc ab a5 f7 8b ef 68 a2 c2 b6 9b 19 55 8b 3e 40 38 7e ea 93 d2 5c 77 81 c1 cc 00 e9 f5 19 f7 e2 e4 ad b7 3e 76 d6 60 89 00 0a 2d c8 66 c2 ed 30 bb a5 0a 0d 45 7f 19 dc 6e b9 f3

{server} calculate finished "tls13 finished":

PRK (32 octets): ca ce 3d 55 5c c1 c5 77 cf 97 0c ff 28 cf 97 8d
6a 98 00 08 54 42 e1 8d 69 5b 50 f3 15 1d 18 c8

hash (0 octets): (empty)

info (18 octets): 00 20 0e 74 6c 73 31 33 20 66 69 6e 69 73 68 65
64 00

expanded (32 octets): 2c 9f 72 f2 7b 81 e7 df 66 8c ac cd 49 37
1f 12 86 d4 11 e1 6c 8c cc 1c 0d 9a ed 72 cb bd c0 80



Thomson                       Informational                    [Page 60]

RFC 8448                     TLS 1.3 Traces                 January 2019
finished (32 octets): c8 c3 a8 f1 bf f5 27 40 61 f4 bc 3a 7c af
fb dc 96 16 09 4c a6 25 ca a6 5f 8e 76 ed 46 db 74 d3

{server} construct a Finished handshake message:

Finished (36 octets): 14 00 00 20 c8 c3 a8 f1 bf f5 27 40 61 f4
bc 3a 7c af fb dc 96 16 09 4c a6 25 ca a6 5f 8e 76 ed 46 db 74 d3

{server} send handshake record:

payload (657 octets): 08 00 00 24 00 22 00 0a 00 14 00 12 00 1d
00 17 00 18 00 19 01 00 01 01 01 02 01 03 01 04 00 1c 00 02 40 01 00 00 00 00 0b 00 01 b9 00 00 01 b5 00 01 b0 30 82 01 ac 30 82 01 15 a0 03 02 01 02 02 01 02 30 0d 06 09 2a 86 48 86 f7 0d 01 01 0b 05 00 30 0e 31 0c 30 0a 06 03 55 04 03 13 03 72 73 61 30 1e 17 0d 31 36 30 37 33 30 30 31 32 33 35 39 5a 17 0d 32 36 30 37 33 30 30 31 32 33 35 39 5a 30 0e 31 0c 30 0a 06 03 55 04 03 13 03 72 73 61 30 81 9f 30 0d 06 09 2a 86 48 86 f7 0d 01 01 01 05 00 03 81 8d 00 30 81 89 02 81 81 00 b4 bb 49 8f 82 79 30 3d 98 08 36 39 9b 36 c6 98 8c 0c 68 de 55 e1 bd b8 26 d3 90 1a 24 61 ea fd 2d e4 9a 91 d0 15 ab bc 9a 95 13 7a ce 6c 1a f1 9e aa 6a f9 8c 7c ed 43 12 09 98 e1 87 a8 0e e0 cc b0 52 4b 1b 01 8c 3e 0b 63 26 4d 44 9a 6d 38 e2 2a 5f da 43 08 46 74 80 30 53 0e f0 46 1c 8c a9 d9 ef bf ae 8e a6 d1 d0 3e 2b d1 93 ef f0 ab 9a 80 02 c4 74 28 a6 d3 5a 8d 88 d7 9f 7f 1e 3f 02 03 01 00 01 a3 1a 30 18 30 09 06 03 55 1d 13 04 02 30 00 30 0b 06 03 55 1d 0f 04 04 03 02 05 a0 30 0d 06 09 2a 86 48 86 f7 0d 01 01 0b 05 00 03 81 81 00 85 aa d2 a0 e5 b9 27 6b 90 8c 65 f7 3a 72 67 17 06 18 a5 4c 5f 8a 7b 33 7d 2d f7 a5 94 36 54 17 f2 ea e8 f8 a5 8c 8f 81 72 f9 31 9c f3 6b 7f d6 c5 5b 80 f2 1a 03 01 51 56 72 60 96 fd 33 5e 5e 67 f2 db f1 02 70 2e 60 8c ca e6 be c1 fc 63 a4 2a 99 be 5c 3e b7 10 7c 3c 54 e9 b9 eb 2b d5 20 3b 1c 3b 84 e0 a8 b2 f7 59 40 9b a3 ea c9 d9 1d 40 2d cc 0c c8 f8 96 12 29 ac 91 87 b4 2b 4d e1 00 00 0f 00 00 84 08 04 00 80 a2 30 1a 68 dd 1c ee e6 93 8f e9 d4 0c 46 b9 20 1b 34 d5 99 52 a3 7e 06 52 3a 39 cf 8b a6 c9 c8 b6 8a e9 44 92 af 78 05 16 ed 7b 73 c8 28 12 e9 9d d3 fa be a4 5e 09 d9 c6 84 87 21 c2 80 8c 61 50 1b 0c 75 e7 fc ab a5 f7 8b ef 68 a2 c2 b6 9b 19 55 8b 3e 40 38 7e ea 93 d2 5c 77 81 c1 cc 00 e9 f5 19 f7 e2 e4 ad b7 3e 76 d6 60 89 00 0a 2d c8 66 c2 ed 30 bb a5 0a 0d 45 7f 19 dc 6e b9 f3 14 00 00 20 c8 c3 a8 f1 bf f5 27 40 61 f4 bc 3a 7c af fb dc 96 16 09 4c a6 25 ca a6 5f 8e 76 ed 46 db 74 d3

complete record (679 octets): 17 03 03 02 a2 48 de 89 1d 9c 36 24
a6 7a 6c 6f 06 01 ab 7a c2 0c 1f 6a 9e 14 d2 e6 00 7e 99 9e 13 03 67 a8 af 1b cf ea 94 98 fb ce 19 df 45 05 ee ce 3a 25 da 52 3c be 55 ea 1b 3b da 4e 91 99 5e 45 5d 50 0a 4f aa 62 27 b7 11 1e 1c 85 47 e2 d7 c1 79 db 21 53 03 d2 58 27 f3 cd 18 f4 8f 64 91 32 8c f5 c0 f8 14 d3 88 15 0b d9 e9 26 4a ae 49 1d b6 99 50 69 be a1 76 65 d5 e0 c8 17 28 4d 4a c2 18 80 05 4c 36 57 33 1e 23 a9 30 4d c8 8a 15 c0 4e c8 0b d3 85 2b f7 f9 d3 c6 61 5b 15 fa c8 3b bc a0 31 c6 d2 31 0d 9f 5d 7a 4b 02 0a 4f 7c 19 06 2b 65 c0 5a 1d 32 64 b5 57 ec 9d 8e 0f 7c ee 27 e3 6f 79 30 39 de 8d d9 6e df ca 90 09 e0 65 10 34 bf f3 1d 7f 34 9e ec e0 1d 99 fc b5 fc ab 84 0d 77 07 c7 22 99 c3 b5 d0 45 64 e8 80 a3 3c 5e 84 6c 76 2e 3d 92 2b b5 53 03 d1 d8 7c c0 f0 65 73 f1 7d cb 9b 8f fd 35 bb d8 83 c1 cb 3a a2 4f cc 32 50 05 f7 68 ce 2f b6 24 ca 97 b6 c4 d9 8e 17 f3 5b c2 c7 94 0a 06 10 0c 2d 44 8d b7 18 0b 2d 86 21 64 43 5c 9c 21 0e 98 60 39 4e 05 aa b2 3f f1 b0 20 3f 66 2c 58 8d a5 bc 44 11 47 7a 30 b4 11 36 c4 88 a0 a6 3f ca b5 c1 5a c6 13 22 6d ae 82 7a 1d 1f e9 5e ce 6b 30 bc ee 15 60 a8 d4 08 d2 64 55 5e 76 0f 9b fc 62 4c 2c 87 fd 04 56 c9 bf b4 1b cd 1a 7b 21 27 86 d2 b6 7f d5 78 04 fa cf a1 ee f7 cf 29 19 d8 b9 98 c9 78 9f 76 3b 4d 9c aa 09 3a 9d ed 43 17 5d 46 a7 6b 4d 54 f0 ce 0c 5d 22 59 b6 07 e3 0a 9d 24 12 63 87 4f a5 9d 6f 57 0d c4 0d 83 a2 d8 3b f9 e9 85 0d 45 4c 57 80 65 35 a8 99 8a e0 35 7d f9 2f 00 b9 66 73 44 c2 41 14 cc c9 ef 53 91 24 b2 04 e7 e6 e7 48 c3 0a 28 a3 d1 d1 83 99 72 43 ea cc bb d3 3b 0c 11 15 a0 32 71 06 a1 e6 a7 52 71 d4 98 30 86 f6 32 ff 0e b8 b4 c6 31 02 cb ce f5 bb 72 da e1 27 9d 5d e8 eb 19 09 6d 8c db 07 fa 8e a9 89 78 8f ac 23 e6 6e 04 88 c1 93 f3 f3 fe a8 c8 83 88 96 bf 3a e4 b6 84 8d 42 ce d4 bd f4 1a be 6f c3 31 b4 42 25 e7 a1 f7 d3 56 41 47 d5 45 8e 71 aa 90 9c b0 2b e9 58 bb c4 2e 3a a5 a2 7c c6 ea f4 b6 fe 51 ae 44 95 69 4d 8a b6 32 0a ab 92 01 83 fd 5b 31 a3 59 04 2f bd 67 39 1e c5 e4 d1 89 2a 2e 52 10 14 1a 49 4e 93 01 b2 4a 11 3c 47 4c 7f 2a 73 45 78 47


Thomson                       Informational                    [Page 61]

RFC 8448                     TLS 1.3 Traces                 January 2019
{server} derive secret "tls13 c ap traffic":

PRK (32 octets): 62 81 12 da e2 f7 02 48 80 63 e4 2d e6 c8 50 a5
c0 82 0b 90 90 3e 00 ab c3 18 75 da 03 d4 bc 5b

hash (32 octets): 07 07 dc ac 7b 2f a4 28 cc 7f 69 16 94 a2 59 0c
80 6a aa 5c 0c f5 08 7e d5 38 50 12 e7 f9 6c d4

info (54 octets): 00 20 12 74 6c 73 31 33 20 63 20 61 70 20 74 72
61 66 66 69 63 20 07 07 dc ac 7b 2f a4 28 cc 7f 69 16 94 a2 59 0c 80 6a aa 5c 0c f5 08 7e d5 38 50 12 e7 f9 6c d4

expanded (32 octets): 74 3e 4c 6b 56 cf 39 09 d1 b0 6d 01 95 6c
cd 2c 4b 37 75 84 49 ae c4 1d 98 da e4 49 24 ea a2 99
Thomson                       Informational                    [Page 62]

RFC 8448                     TLS 1.3 Traces                 January 2019
{server} derive secret "tls13 s ap traffic":

PRK (32 octets): 62 81 12 da e2 f7 02 48 80 63 e4 2d e6 c8 50 a5
c0 82 0b 90 90 3e 00 ab c3 18 75 da 03 d4 bc 5b

hash (32 octets): 07 07 dc ac 7b 2f a4 28 cc 7f 69 16 94 a2 59 0c
80 6a aa 5c 0c f5 08 7e d5 38 50 12 e7 f9 6c d4

info (54 octets): 00 20 12 74 6c 73 31 33 20 73 20 61 70 20 74 72
61 66 66 69 63 20 07 07 dc ac 7b 2f a4 28 cc 7f 69 16 94 a2 59 0c 80 6a aa 5c 0c f5 08 7e d5 38 50 12 e7 f9 6c d4

expanded (32 octets): b6 b8 14 4a a3 35 ed 30 59 c0 c9 c8 f0 ec
ab f7 af c9 4a f6 64 3b de cd fd 92 10 18 8f ab 74 51

{server} derive secret "tls13 exp master":

PRK (32 octets): 62 81 12 da e2 f7 02 48 80 63 e4 2d e6 c8 50 a5
c0 82 0b 90 90 3e 00 ab c3 18 75 da 03 d4 bc 5b

hash (32 octets): 07 07 dc ac 7b 2f a4 28 cc 7f 69 16 94 a2 59 0c
80 6a aa 5c 0c f5 08 7e d5 38 50 12 e7 f9 6c d4

info (52 octets): 00 20 10 74 6c 73 31 33 20 65 78 70 20 6d 61 73
74 65 72 20 07 07 dc ac 7b 2f a4 28 cc 7f 69 16 94 a2 59 0c 80 6a aa 5c 0c f5 08 7e d5 38 50 12 e7 f9 6c d4

expanded (32 octets): fb 69 12 1c ea 33 4d b4 59 e1 22 72 d1 79
ba ca 23 69 b6 43 d1 1a 6a c7 2b 8b 27 a5 c9 64 fe b1

{server} derive write traffic keys for application data:

PRK (32 octets): b6 b8 14 4a a3 35 ed 30 59 c0 c9 c8 f0 ec ab f7
af c9 4a f6 64 3b de cd fd 92 10 18 8f ab 74 51

key info (13 octets): 00 10 09 74 6c 73 31 33 20 6b 65 79 00

key expanded (16 octets): ed c4 cb d0 04 1c 28 cc 71 67 44 1d 7c
a5 3e 6a

iv info (12 octets): 00 0c 08 74 6c 73 31 33 20 69 76 00

iv expanded (12 octets): bf 6c 7d 8e 0a 95 45 b4 27 dc f1 39

{server} derive read traffic keys for handshake data:

PRK (32 octets): 2c 3c b2 4a 10 81 ed b5 95 18 ee 68 61 e8 9a 6b
72 b3 80 1a fe 77 13 e4 cb bc 21 c0 79 5b f8 31


Thomson                       Informational                    [Page 63]

RFC 8448                     TLS 1.3 Traces                 January 2019
key info (13 octets): 00 10 09 74 6c 73 31 33 20 6b 65 79 00

key expanded (16 octets): 62 d1 3c 13 ff d7 40 2f c1 c0 9e 3d 16
36 65 cb

iv info (12 octets): 00 0c 08 74 6c 73 31 33 20 69 76 00

iv expanded (12 octets): 71 66 f2 00 28 bf 14 6d cf bd 5a 40

{client} extract secret "early" (same as server early secret)

{client} derive secret for handshake "tls13 derived":

PRK (32 octets): 33 ad 0a 1c 60 7e c0 3b 09 e6 cd 98 93 68 0c e2
10 ad f3 00 aa 1f 26 60 e1 b2 2e 10 f1 70 f9 2a

hash (32 octets): e3 b0 c4 42 98 fc 1c 14 9a fb f4 c8 99 6f b9 24
27 ae 41 e4 64 9b 93 4c a4 95 99 1b 78 52 b8 55

info (49 octets): 00 20 0d 74 6c 73 31 33 20 64 65 72 69 76 65 64
20 e3 b0 c4 42 98 fc 1c 14 9a fb f4 c8 99 6f b9 24 27 ae 41 e4 64 9b 93 4c a4 95 99 1b 78 52 b8 55

expanded (32 octets): 6f 26 15 a1 08 c7 02 c5 67 8f 54 fc 9d ba
b6 97 16 c0 76 18 9c 48 25 0c eb ea c3 57 6c 36 11 ba

{client} extract secret "handshake" (same as server handshake
secret)

{client} derive secret "tls13 c hs traffic" (same as server)

{client} derive secret "tls13 s hs traffic" (same as server)

{client} derive secret for master "tls13 derived" (same as server)

{client} extract secret "master" (same as server master secret)

{client} derive read traffic keys for handshake data (same as server
handshake data write traffic keys)

{client} calculate finished "tls13 finished" (same as server)

{client} derive secret "tls13 c ap traffic" (same as server)

{client} derive secret "tls13 s ap traffic" (same as server)

{client} derive secret "tls13 exp master" (same as server) {client} send change_cipher_spec record:



Thomson                       Informational                    [Page 64]

RFC 8448                     TLS 1.3 Traces                 January 2019
payload (1 octets): 01

complete record (6 octets): 14 03 03 00 01 01

{client} derive write traffic keys for handshake data (same as
server handshake data read traffic keys)

{client} derive read traffic keys for application data (same as
server application data write traffic keys)

{client} calculate finished "tls13 finished":

PRK (32 octets): 2c 3c b2 4a 10 81 ed b5 95 18 ee 68 61 e8 9a 6b
72 b3 80 1a fe 77 13 e4 cb bc 21 c0 79 5b f8 31

hash (0 octets): (empty)

info (18 octets): 00 20 0e 74 6c 73 31 33 20 66 69 6e 69 73 68 65
64 00

expanded (32 octets): 77 34 1a bc 8c 0f fa b5 18 07 36 71 3e 41
d2 f6 65 c4 10 a4 04 c8 c2 1e dc d9 48 a4 44 0f d8 0c

finished (32 octets): 69 2c ab 15 5c c6 c1 00 ea d6 07 33 d0 61
7f 6f b0 9b 71 aa 1e 8c 9a cc bb bc 9e 8e d3 36 c1 dd

{client} construct a Finished handshake message:

Finished (36 octets): 14 00 00 20 69 2c ab 15 5c c6 c1 00 ea d6
07 33 d0 61 7f 6f b0 9b 71 aa 1e 8c 9a cc bb bc 9e 8e d3 36 c1 dd

{client} send handshake record:

payload (36 octets): 14 00 00 20 69 2c ab 15 5c c6 c1 00 ea d6 07
33 d0 61 7f 6f b0 9b 71 aa 1e 8c 9a cc bb bc 9e 8e d3 36 c1 dd

complete record (58 octets): 17 03 03 00 35 32 d0 30 e2 73 77 3a
86 96 c7 99 98 1a f6 ce d0 7f 87 48 2e 81 56 5e 39 4e 87 c8 67 f3 3d f3 d6 5b 75 06 f1 a6 26 af 91 d4 82 1d 5f 7a 1f 21 0e f8 dd 3c 6d 16

{client} derive write traffic keys for application data:

PRK (32 octets): 74 3e 4c 6b 56 cf 39 09 d1 b0 6d 01 95 6c cd 2c
4b 37 75 84 49 ae c4 1d 98 da e4 49 24 ea a2 99


Thomson                       Informational                    [Page 65]

RFC 8448                     TLS 1.3 Traces                 January 2019
key info (13 octets): 00 10 09 74 6c 73 31 33 20 6b 65 79 00

key expanded (16 octets): 33 d7 f9 70 97 56 c9 66 48 8a d4 43 84
37 e6 73

iv info (12 octets): 00 0c 08 74 6c 73 31 33 20 69 76 00

iv expanded (12 octets): c5 f3 0d 34 b0 e9 1b 7d 6c 8e ea 65

{client} derive secret "tls13 res master":

PRK (32 octets): 62 81 12 da e2 f7 02 48 80 63 e4 2d e6 c8 50 a5
c0 82 0b 90 90 3e 00 ab c3 18 75 da 03 d4 bc 5b

hash (32 octets): a0 21 d3 a0 5b d4 18 a7 72 81 38 75 ef 79 b0 af
68 c5 12 32 15 42 7a b7 33 3f 8c 27 72 2a 9f d5

info (52 octets): 00 20 10 74 6c 73 31 33 20 72 65 73 20 6d 61 73
74 65 72 20 a0 21 d3 a0 5b d4 18 a7 72 81 38 75 ef 79 b0 af 68 c5 12 32 15 42 7a b7 33 3f 8c 27 72 2a 9f d5

expanded (32 octets): 0b 5d 44 07 ce a0 a4 2a 3a 81 dd 47 76 47
b7 fe 91 80 db 29 7e 51 14 f1 ad 87 96 b4 dc 47 50 04

{server} calculate finished "tls13 finished" (same as client)

{server} derive read traffic keys for application data (same as
client application data write traffic keys)

{server} derive secret "tls13 res master" (same as client)

{client} send alert record:

payload (2 octets): 01 00

complete record (24 octets): 17 03 03 00 13 0f 62 91 55 38 2d ba
23 c4 e2 c5 f7 f8 4e 6f 2e d3 08 3d

{server} send alert record:

payload (2 octets): 01 00

complete record (24 octets): 17 03 03 00 13 b7 25 7b 0f ec af 69
d4 f0 9e 3f 89 1e 2a 25 d1 e2 88 45
Thomson                       Informational                    [Page 66]

RFC 8448                     TLS 1.3 Traces                 January 2019
8.  Security Considerations
It probably isn't a good idea to use the private key included in this document. In addition to the fact that it is too small to provide any meaningful security, it is now very well known.
9.  IANA Considerations
This document has no IANA actions.
10.  References

10.1.  Normative References
[TLS13] Rescorla, E., "The Transport Layer Security (TLS) Protocol
Version 1.3", RFC 8446, DOI 10.17487/RFC8446, August 2018, <https://www.rfc-editor.org/info/rfc8446>.
10.2.  Informative References
[FIPS.186-4.2013]
National Institute of Standards and Technology, "Digital Signature Standard (DSS)", FIPS 186-4, DOI 10.6028/NIST.FIPS.186-4, July 2013, <https://nvlpubs.nist.gov/nistpubs/fips/ nist.fips.186-4.pdf>.

[NSS] Mozilla, "Network Security Services", November 2018,
<https://developer.mozilla.org/en-US/docs/Mozilla/ Projects/NSS>.

[RFC5869] Krawczyk, H. and P. Eronen, "HMAC-based Extract-and-Expand
Key Derivation Function (HKDF)", RFC 5869, DOI 10.17487/RFC5869, May 2010, <https://www.rfc-editor.org/info/rfc5869>.

[RFC7748] Langley, A., Hamburg, M., and S. Turner, "Elliptic Curves
for Security", RFC 7748, DOI 10.17487/RFC7748, January 2016, <https://www.rfc-editor.org/info/rfc7748>.
Thomson                       Informational                    [Page 67]

RFC 8448                     TLS 1.3 Traces                 January 2019
Acknowledgements

This document was generated using tests that were written for Network Security Services [NSS]. None of this would have been possible without Franziskus Kiefer, Eric Rescorla, and Tim Taubert, all of whom did a lot of the work in NSS.

Author's Address

Martin Thomson Mozilla

Email: martin.thomson@gmail.com






































Thomson Informational [Page 68]

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