TCPM J. Touch Internet Draft Independent consultant Intended status: Informational J. Kuusisaari Expires: July 2022 Infinera January 21, 2022 TCP-AO Test Vectors draft-ietf-tcpm-ao-test-vectors-05.txt Status of this Memo This Internet-Draft is submitted in full conformance with the provisions of BCP 78 and BCP 79. Internet-Drafts are working documents of the Internet Engineering Task Force (IETF), its areas, and its working groups. Note that other groups may also distribute working documents as Internet- Drafts. Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in progress." 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Abstract This document provides test vectors to validate implementations of the two mandatory authentication algorithms specified for the TCP Authentication Option over both IPv4 and IPv6. This includes validation of the key derivation function (KDF) based on a set of test connection parameters as well as validation of the message authentication code (MAC). Vectors are provided for both currently required pairs of KDF and MAC algorithms: KDF_HMAC_SHA1 and HMAC- SHA-1-96, and KDF_AES_128_CMAC and AES-128-CMAC-96. The vectors also validate both whole TCP segments as well as segments whose options are excluded for middlebox traversal. Table of Contents 1. Introduction...................................................3 2. Conventions used in this document..............................4 3. Input Test Vectors.............................................4 3.1. TCP Connection Parameters.................................4 3.1.1. TCP-AO parameters....................................4 3.1.2. Active (client) side parameters......................4 3.1.3. Passive (server) side parameters.....................5 3.1.4. Other IP fields and options..........................5 3.1.5. Other TCP fields and options.........................5 4. IPv4 SHA-1 Output Test Vectors.................................5 4.1. HMAC-SHA-1-96 (default - covers TCP options)..............6 4.1.1. Send (client) SYN (covers options)...................6 4.1.2. Receive (server) SYN-ACK (covers options)............6 4.1.3. Send (client) non-SYN (covers options)...............7 4.1.4. Receive (server) non-SYN (covers options)............7 4.2. HMAC-SHA-1-96 (omits TCP options).........................8 4.2.1. Send (client) SYN (omits options)....................8 4.2.2. Receive (server) SYN-ACK (omits options).............9 4.2.3. Send (client) non-SYN (omits options)................9 4.2.4. Receive (server) non-SYN (omits options)............10 5. IPv4 AES-128 Output Test Vectors..............................10 5.1. AES-128-CMAC-96 (default - covers TCP options)...........10 5.1.1. Send (client) SYN (covers options)..................10 5.1.2. Receive (server) SYN-ACK (covers options)...........11 5.1.3. Send (client) non-SYN (covers options)..............11 5.1.4. Receive (server) non-SYN (covers options)...........12 5.2. AES-128-CMAC-96 (omits TCP options)......................13 5.2.1. Send (client) SYN (omits options)...................13 Touch Expires July 21, 2022 [Page 2] Internet-Draft TCP-AO Test Vectors January 2022 5.2.2. Receive (server) SYN-ACK (omits options)............13 5.2.3. Send (client) non-SYN (omits options)...............14 5.2.4. Receive (server) non-SYN (omits options)............14 6. IPv6 SHA-1 Output Test Vectors................................15 6.1. HMAC-SHA-1-96 (default - covers TCP options).............15 6.1.1. Send (client) SYN (covers options)..................15 6.1.2. Receive (server) SYN-ACK (covers options)...........15 6.1.3. Send (client) non-SYN (covers options)..............16 6.1.4. Receive (server) non-SYN (covers options)...........17 6.2. HMAC-SHA-1-96 (omits TCP options)........................17 6.2.1. Send (client) SYN (omits options)...................17 6.2.2. Receive (server) SYN-ACK (omits options)............18 6.2.3. Send (client) non-SYN (omits options)...............18 6.2.4. Receive (server) non-SYN (omits options)............19 7. IPv6 AES-128 Output Test Vectors..............................20 7.1. AES-128-CMAC-96 (default - covers TCP options)...........20 7.1.1. Send (client) SYN (covers options)..................20 7.1.2. Receive (server) SYN-ACK (covers options)...........20 7.1.3. Send (client) non-SYN (covers options)..............21 7.1.4. Receive (server) non-SYN (covers options)...........21 7.2. AES-128-CMAC-96 (omits TCP options)......................22 7.2.1. Send (client) SYN (omits options)...................22 7.2.2. Receive (server) SYN-ACK (omits options)............23 7.2.3. Send (client) non-SYN (omits options)...............23 7.2.4. Receive (server) non-SYN (omits options)............24 8. Observed Implementation Errors................................24 8.1. Algorithm issues.........................................24 8.2. Algorithm parameters.....................................24 8.3. String handling issues...................................25 8.4. Header coverage issues...................................25 9. Security Considerations.......................................25 10. IANA Considerations..........................................26 11. References...................................................26 11.1. Normative References....................................26 11.2. Informative References..................................26 12. Acknowledgments..............................................27 1. Introduction This document provides test vectors to validate the correct implementation of the TCP Authentication Option (TCP-AO) [RFC5925] and its mandatory cryptographic algorithms defined in [RFC5926]. It includes the specification of all endpoint parameters to generate the variety of TCP segments covered by different keys and MAC coverage, i.e., both the default case and the variant where TCP options are ignored for middlebox traversal. It also includes both default key derivation functions (KDFs) and MAC generation Touch Expires July 21, 2022 [Page 3] Internet-Draft TCP-AO Test Vectors January 2022 algorithms [RFC5926] and lists common pitfalls of implementing the algorithms correctly. The experimental extension to support NAT traversal is not included in the provided test vectors [RFC6978]. This document provides test vectors from multiple implementations that have been validated against each other for interoperability. 2. Conventions used in this document The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in BCP 14 [RFC2119] [RFC8174] when, and only when, they appear in all capitals, as shown here. 3. Input Test Vectors 3.1. TCP Connection Parameters The following parameters are used throughout this suite of test vectors. The terms 'active' and 'passive' are used as defined for TCP [RFC793]. 3.1.1. TCP-AO parameters The following values are used for all exchanges. This suite does not test key switchover. The KeyIDs are as indicated for TCP-AO [RFC5925]. The Master Key is used to derive the traffic keys [RFC5926]. Active (client) side KeyID: 61 decimal (0x3d hexadecimal) Passive (server) side KeyID: 84 decimal (0x54 hexadecimal) Master_key: "testvector" (length = 10 bytes) 3.1.2. Active (client) side parameters The following endpoint parameters are used on the active side of the TCP connection, i.e., the side that initiates the TCP SYN. For IPv4: 10.11.12.13 (dotted decimal) For IPv6: fd00::1 (IPv6 hexadecimal) Touch Expires July 21, 2022 [Page 4] Internet-Draft TCP-AO Test Vectors January 2022 TCP port: (varies) 3.1.3. Passive (server) side parameters The following endpoint parameters are used for the passive side of the TCP connection, i.e., the side that responds with a TCP SYN-ACK. For IPv4: 172.27.28.29 (dotted decimal) For IPv6: fd00::2 (IPv6 hexadecimal) TCP port = 179 decimal (BGP) 3.1.4. Other IP fields and options No IP options are used in these test vectors. All IPv4 packets use the following other parameters [RFC791]: DSCP = 111000 binary (CS7) as is typical for BGP, ECN = 00 binary, set DF, and clear MF. IPv4 uses a TTL of 255 decimal; IPv6 uses a hop limit of 64 decimal. All IPv6 packets use the following other parameters [RFC8200]: traffic class = 0xe0 hexadecimal (DSCP = 111000 binary CS7, as is typical for BGP, with ECN = 00 binary) and no EHs. 3.1.5. Other TCP fields and options The SYN and SYN-ACK segments include MSS [RFC793], NOP, WindowScale [RFC7323], SACK Permitted [RFC2018], TimeStamp [RFC7323], and TCP-AO [RFC5925], in that order. All other example segments include NOP, NOP, TimeStamp, and TCP-AO, in that order. All segment URG pointers are zero [RFC793]. All segments with data set the PSH flag [RFC793]. 4. IPv4 SHA-1 Output Test Vectors The SHA-1 KDF and MAC algorithms, KDF_HMAC_SHA1 and HMAC-SHA-1-96, are computed as specified for TCP-AO [RFC5926]. In the following sections, all values are indicated as 2-digit hexadecimal values with spacing per line representing the contents of 16 consecutive bytes, as is typical for data dumps. The IP/TCP Touch Expires July 21, 2022 [Page 5] Internet-Draft TCP-AO Test Vectors January 2022 data indicates the entire IP packet, including the TCP segment and its options (whether covered by TCP-AO or not, as indicated), including TCP-AO. 4.1. HMAC-SHA-1-96 (default - covers TCP options) 4.1.1. Send (client) SYN (covers options) Send_SYN_traffic_key: 6d 63 ef 1b 02 fe 15 09 d4 b1 40 27 07 fd 7b 04 16 ab b7 4f IPv4/TCP: 45 e0 00 4c dd 0f 40 00 ff 06 bf 6b 0a 0b 0c 0d ac 1b 1c 1d e9 d7 00 b3 fb fb ab 5a 00 00 00 00 e0 02 ff ff ca c4 00 00 02 04 05 b4 01 03 03 08 04 02 08 0a 00 15 5a b7 00 00 00 00 1d 10 3d 54 2e e4 37 c6 f8 ed e6 d7 c4 d6 02 e7 MAC: 2e e4 37 c6 f8 ed e6 d7 c4 d6 02 e7 4.1.2. Receive (server) SYN-ACK (covers options) Receive_SYN_traffic_key: d9 e2 17 e4 83 4a 80 ca 2f 3f d8 de 2e 41 b8 e6 79 7f ea 96 IPv4/TCP: 45 e0 00 4c 65 06 40 00 ff 06 37 75 ac 1b 1c 1d 0a 0b 0c 0d 00 b3 e9 d7 11 c1 42 61 fb fb ab 5b e0 12 ff ff 37 76 00 00 02 04 05 b4 01 03 03 08 04 02 08 0a 84 a5 0b eb 00 15 5a b7 1d 10 54 3d ee ab 0f e2 4c 30 10 81 51 16 b3 be Touch Expires July 21, 2022 [Page 6] Internet-Draft TCP-AO Test Vectors January 2022 MAC: ee ab 0f e2 4c 30 10 81 51 16 b3 be 4.1.3. Send (client) non-SYN (covers options) Send_other_traffic_key: d2 e5 9c 65 ff c7 b1 a3 93 47 65 64 63 b7 0e dc 24 a1 3d 71 IPv4/TCP: 45 e0 00 87 36 a1 40 00 ff 06 65 9f 0a 0b 0c 0d ac 1b 1c 1d e9 d7 00 b3 fb fb ab 5b 11 c1 42 62 c0 18 01 04 a1 62 00 00 01 01 08 0a 00 15 5a c1 84 a5 0b eb 1d 10 3d 54 70 64 cf 99 8c c6 c3 15 c2 c2 e2 bf ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 00 43 01 04 da bf 00 b4 0a 0b 0c 0d 26 02 06 01 04 00 01 00 01 02 02 80 00 02 02 02 00 02 02 42 00 02 06 41 04 00 00 da bf 02 08 40 06 00 64 00 01 01 00 MAC: 70 64 cf 99 8c c6 c3 15 c2 c2 e2 bf 4.1.4. Receive (server) non-SYN (covers options) Receive_other_traffic_key: d9 e2 17 e4 83 4a 80 ca 2f 3f d8 de 2e 41 b8 e6 79 7f ea 96 Touch Expires July 21, 2022 [Page 7] Internet-Draft TCP-AO Test Vectors January 2022 IPv4/TCP: 45 e0 00 87 1f a9 40 00 ff 06 7c 97 ac 1b 1c 1d 0a 0b 0c 0d 00 b3 e9 d7 11 c1 42 62 fb fb ab 9e c0 18 01 00 40 0c 00 00 01 01 08 0a 84 a5 0b f5 00 15 5a c1 1d 10 54 3d a6 3f 0e cb bb 2e 63 5c 95 4d ea c7 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 00 43 01 04 da c0 00 b4 ac 1b 1c 1d 26 02 06 01 04 00 01 00 01 02 02 80 00 02 02 02 00 02 02 42 00 02 06 41 04 00 00 da c0 02 08 40 06 00 64 00 01 01 00 MAC: a6 3f 0e cb bb 2e 63 5c 95 4d ea c7 4.2. HMAC-SHA-1-96 (omits TCP options) 4.2.1. Send (client) SYN (omits options) Send_SYN_traffic_key: 30 ea a1 56 0c f0 be 57 da b5 c0 45 22 9f b1 0a 42 3c d7 ea IPv4/TCP: 45 e0 00 4c 53 99 40 00 ff 06 48 e2 0a 0b 0c 0d ac 1b 1c 1d ff 12 00 b3 cb 0e fb ee 00 00 00 00 e0 02 ff ff 54 1f 00 00 02 04 05 b4 01 03 03 08 04 02 08 0a 00 02 4c ce 00 00 00 00 1d 10 3d 54 80 af 3c fe b8 53 68 93 7b 8f 9e c2 MAC: 80 af 3c fe b8 53 68 93 7b 8f 9e c2 Touch Expires July 21, 2022 [Page 8] Internet-Draft TCP-AO Test Vectors January 2022 4.2.2. Receive (server) SYN-ACK (omits options) Receive_SYN_traffic_key: b5 b2 89 6b b3 66 4e 81 76 b0 ed c6 e7 99 52 41a 01 a8 30 7f IPv4/TCP: 45 e0 00 4c 32 84 40 00 ff 06 69 f7 ac 1b 1c 1d 0a 0b 0c 0d 00 b3 ff 12 ac d5 b5 e1 cb 0e fb ef e0 12 ff ff 38 8e 00 00 02 04 05 b4 01 03 03 08 04 02 08 0a 57 67 72 f3 00 02 4c ce 1d 10 54 3d 09 30 6f 9a ce a6 3a 8c 68 cb 9a 70 MAC: 09 30 6f 9a ce a6 3a 8c 68 cb 9a 70 4.2.3. Send (client) non-SYN (omits options) Send_other_traffic_key: f3 db 17 93 d7 91 0e cd 80 6c 34 f1 55 ea 1f 00 34 59 53 e3 IPv4/TCP: 45 e0 00 87 a8 f5 40 00 ff 06 f3 4a 0a 0b 0c 0d ac 1b 1c 1d ff 12 00 b3 cb 0e fb ef ac d5 b5 e2 c0 18 01 04 6c 45 00 00 01 01 08 0a 00 02 4c ce 57 67 72 f3 1d 10 3d 54 71 06 08 cc 69 6c 03 a2 71 c9 3a a5 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 00 43 01 04 da bf 00 b4 0a 0b 0c 0d 26 02 06 01 04 00 01 00 01 02 02 80 00 02 02 02 00 02 02 42 00 02 06 41 04 00 00 da bf 02 08 40 06 00 64 00 01 01 00 MAC: 71 06 08 cc 69 6c 03 a2 71 c9 3a a5 Touch Expires July 21, 2022 [Page 9] Internet-Draft TCP-AO Test Vectors January 2022 4.2.4. Receive (server) non-SYN (omits options) Receive_other_traffic_key: b5 b2 89 6b b3 66 4e 81 76 b0 ed c6 e7 99 52 41 01 a8 30 7f IPv4/TCP: 45 e0 00 87 54 37 40 00 ff 06 48 09 ac 1b 1c 1d 0a 0b 0c 0d 00 b3 ff 12 ac d5 b5 e2 cb 0e fc 32 c0 18 01 00 46 b6 00 00 01 01 08 0a 57 67 72 f3 00 02 4c ce 1d 10 54 3d 97 76 6e 48 ac 26 2d e9 ae 61 b4 f9 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 00 43 01 04 da c0 00 b4 ac 1b 1c 1d 26 02 06 01 04 00 01 00 01 02 02 80 00 02 02 02 00 02 02 42 00 02 06 41 04 00 00 da c0 02 08 40 06 00 64 00 01 01 00 MAC: 97 76 6e 48 ac 26 2d e9 ae 61 b4 f9 5. IPv4 AES-128 Output Test Vectors The AES-128 KDF and MAC algorithms, KDF_AES_128_CMAC and AES-128- CMAC-96, are computed as specified for TCP-AO [RFC5926] In the following sections, all values are indicated as 2-digit hexadecimal values with spacing per line representing the contents of 16 consecutive bytes, as is typical for data dumps. The IP/TCP data indicates the entire IP packet, including the TCP segment and its options (whether covered by TCP-AO or not, as indicated), including TCP-AO. 5.1. AES-128-CMAC-96 (default - covers TCP options) 5.1.1. Send (client) SYN (covers options) Send_SYN_traffic_key: f5 b8 b3 d5 f3 4f db b6 eb 8d 4a b9 66 0e 60 e3 Touch Expires July 21, 2022 [Page 10] Internet-Draft TCP-AO Test Vectors January 2022 IP/TCP: 45 e0 00 4c 7b 9f 40 00 ff 06 20 dc 0a 0b 0c 0d ac 1b 1c 1d c4 fa 00 b3 78 7a 1d df 00 00 00 00 e0 02 ff ff 5a 0f 00 00 02 04 05 b4 01 03 03 08 04 02 08 0a 00 01 7e d0 00 00 00 00 1d 10 3d 54 e4 77 e9 9c 80 40 76 54 98 e5 50 91 MAC: e4 77 e9 9c 80 40 76 54 98 e5 50 91 5.1.2. Receive (server) SYN-ACK (covers options) Receive_SYN_traffic_key: 4b c7 57 1a 48 6f 32 64 bb d8 88 47 40 66 b4 b1 IPv4/TCP: 45 e0 00 4c 4b ad 40 00 ff 06 50 ce ac 1b 1c 1d 0a 0b 0c 0d 00 b3 c4 fa fa dd 6d e9 78 7a 1d e0 e0 12 ff ff f3 f2 00 00 02 04 05 b4 01 03 03 08 04 02 08 0a 93 f4 e9 e8 00 01 7e d0 1d 10 54 3d d6 ad a7 bc 4c dd 53 6d 17 69 db 5f MAC: d6 ad a7 bc 4c dd 53 6d 17 69 db 5f 5.1.3. Send (client) non-SYN (covers options) Send_other_traffic_key: 8c 8a e0 e8 37 1e c5 cb b9 7e a7 9d 90 41 83 91 Touch Expires July 21, 2022 [Page 11] Internet-Draft TCP-AO Test Vectors January 2022 IPv4/TCP: 45 e0 00 87 fb 4f 40 00 ff 06 a0 f0 0a 0b 0c 0d ac 1b 1c 1d c4 fa 00 b3 78 7a 1d e0 fa dd 6d ea c0 18 01 04 95 05 00 00 01 01 08 0a 00 01 7e d0 93 f4 e9 e8 1d 10 3d 54 77 41 27 42 fa 4d c4 33 ef f0 97 3e ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 00 43 01 04 da bf 00 b4 0a 0b 0c 0d 26 02 06 01 04 00 01 00 01 02 02 80 00 02 02 02 00 02 02 42 00 02 06 41 04 00 00 da bf 02 08 40 06 00 64 00 01 01 00 MAC: 77 41 27 42 fa 4d c4 33 ef f0 97 3e 5.1.4. Receive (server) non-SYN (covers options) Receive_other_traffic_key: 4b c7 57 1a 48 6f 32 64 bb d8 88 47 40 66 b4 b1 IPv4/TCP: 45 e0 00 87 b9 14 40 00 ff 06 e3 2b ac 1b 1c 1d 0a 0b 0c 0d 00 b3 c4 fa fa dd 6d ea 78 7a 1e 23 c0 18 01 00 e7 db 00 00 01 01 08 0a 93 f4 e9 e8 00 01 7e d0 1d 10 54 3d f6 d9 65 a7 83 82 a7 48 45 f7 2d ac ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 00 43 01 04 da c0 00 b4 ac 1b 1c 1d 26 02 06 01 04 00 01 00 01 02 02 80 00 02 02 02 00 02 02 42 00 02 06 41 04 00 00 da c0 02 08 40 06 00 64 00 01 01 00 MAC: f6 d9 65 a7 83 82 a7 48 45 f7 2d ac Touch Expires July 21, 2022 [Page 12] Internet-Draft TCP-AO Test Vectors January 2022 5.2. AES-128-CMAC-96 (omits TCP options) 5.2.1. Send (client) SYN (omits options) Send_SYN_traffic_key: 2c db ae 13 92 c4 94 49 fa 92 c4 50 97 35 d5 0e IPv4/TCP: 45 e0 00 4c f2 2e 40 00 ff 06 aa 4c 0a 0b 0c 0d ac 1b 1c 1d da 1c 00 b3 38 9b ed 71 00 00 00 00 e0 02 ff ff 70 bf 00 00 02 04 05 b4 01 03 03 08 04 02 08 0a 00 01 85 e1 00 00 00 00 1d 10 3d 54 c4 4e 60 cb 31 f7 c0 b1 de 3d 27 49 MAC: c4 4e 60 cb 31 f7 c0 b1 de 3d 27 49 5.2.2. Receive (server) SYN-ACK (omits options) Receive_SYN_traffic_key: 3c e6 7a 55 18 69 50 6b 63 47 b6 33 c5 0a 62 4a IPv4/TCP: 45 e0 00 4c 6c c0 40 00 ff 06 2f bb ac 1b 1c 1d 0a 0b 0c 0d 00 b3 da 1c d3 84 4a 6f 38 9b ed 72 e0 12 ff ff e4 45 00 00 02 04 05 b4 01 03 03 08 04 02 08 0a ce 45 98 38 00 01 85 e1 1d 10 54 3d 3a 6a bb 20 7e 49 b1 be 71 36 db 90 MAC: 3a 6a bb 20 7e 49 b1 be 71 36 db 90 Touch Expires July 21, 2022 [Page 13] Internet-Draft TCP-AO Test Vectors January 2022 5.2.3. Send (client) non-SYN (omits options) Send_other_traffic_key: 03 5b c4 00 a3 41 ff e5 95 f5 9f 58 00 50 06 ca IPv4/TCP: 45 e0 00 87 ee 91 40 00 ff 06 ad ae 0a 0b 0c 0d ac 1b 1c 1d da 1c 00 b3 38 9b ed 72 d3 84 4a 70 c0 18 01 04 88 51 00 00 01 01 08 0a 00 01 85 e1 ce 45 98 38 1d 10 3d 54 75 85 e9 e9 d5 c3 ec 85 7b 96 f8 37 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 00 43 01 04 da bf 00 b4 0a 0b 0c 0d 26 02 06 01 04 00 01 00 01 02 02 80 00 02 02 02 00 02 02 42 00 02 06 41 04 00 00 da bf 02 08 40 06 00 64 00 01 01 00 MAC: 75 85 e9 e9 d5 c3 ec 85 7b 96 f8 37 5.2.4. Receive (server) non-SYN (omits options) Receive_other_traffic_key: 3c e6 7a 55 18 69 50 6b 63 47 b6 33 c5 0a 62 4a IPv4/TCP: 45 e0 00 87 6a 21 40 00 ff 06 32 1f ac 1b 1c 1d 0a 0b 0c 0d 00 b3 da 1c d3 84 4a 70 38 9b ed 72 c0 18 01 00 04 49 00 00 01 01 08 0a ce 45 98 38 00 01 85 e1 1d 10 54 3d 5c 04 0f d9 23 33 04 76 5c 09 82 f4 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 00 43 01 04 da c0 00 b4 ac 1b 1c 1d 26 02 06 01 04 00 01 00 01 02 02 80 00 02 02 02 00 02 02 42 00 02 06 41 04 00 00 da c0 02 08 40 06 00 64 00 01 01 00 Touch Expires July 21, 2022 [Page 14] Internet-Draft TCP-AO Test Vectors January 2022 MAC: 5c 04 0f d9 23 33 04 76 5c 09 82 f4 6. IPv6 SHA-1 Output Test Vectors The SHA-1 KDF and MAC algorithms, KDF_HMAC_SHA1 and HMAC-SHA-1-96, are computed as specified for TCP-AO [RFC5926]. 6.1. HMAC-SHA-1-96 (default - covers TCP options) 6.1.1. Send (client) SYN (covers options) Send_SYN_traffic_key: 62 5e c0 9d 57 58 36 ed c9 b6 42 84 18 bb f0 69 89 a3 61 bb IPv6/TCP: 6e 08 91 dc 00 38 06 40 fd 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 fd 00 00 00 00 00 00 00 00 00 00 00 00 00 00 02 f7 e4 00 b3 17 6a 83 3f 00 00 00 00 e0 02 ff ff 47 21 00 00 02 04 05 a0 01 03 03 08 04 02 08 0a 00 41 d0 87 00 00 00 00 1d 10 3d 54 90 33 ec 3d 73 34 b6 4c 5e dd 03 9f MAC: 90 33 ec 3d 73 34 b6 4c 5e dd 03 9f 6.1.2. Receive (server) SYN-ACK (covers options) Receive_SYN_traffic_key: e4 a3 7a da 2a 0a fc a8 71 14 34 91 3f e1 38 c7 71 eb cb 4a Touch Expires July 21, 2022 [Page 15] Internet-Draft TCP-AO Test Vectors January 2022 IPv6/TCP: 6e 01 00 9e 00 38 06 40 fd 00 00 00 00 00 00 00 00 00 00 00 00 00 00 02 fd 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 00 b3 f7 e4 3f 51 99 4b 17 6a 83 40 e0 12 ff ff bf ec 00 00 02 04 05 a0 01 03 03 08 04 02 08 0a bd 33 12 9b 00 41 d0 87 1d 10 54 3d f1 cb a3 46 c3 52 61 63 f7 1f 1f 55 MAC: f1 cb a3 46 c3 52 61 63 f7 1f 1f 55 6.1.3. Send (client) non-SYN (covers options) Send_other_traffic_key: 1e d8 29 75 f4 ea 44 4c 61 58 0c 5b d9 0d bd 61 bb c9 1b 7e IPv6/TCP: 6e 08 91 dc 00 73 06 40 fd 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 fd 00 00 00 00 00 00 00 00 00 00 00 00 00 00 02 f7 e4 00 b3 17 6a 83 40 3f 51 99 4c c0 18 01 00 32 9c 00 00 01 01 08 0a 00 41 d0 91 bd 33 12 9b 1d 10 3d 54 bf 08 05 fe b4 ac 7b 16 3d 6f cd f2 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 00 43 01 04 fd e8 00 b4 01 01 01 79 26 02 06 01 04 00 01 00 01 02 02 80 00 02 02 02 00 02 02 42 00 02 06 41 04 00 00 fd e8 02 08 40 06 00 64 00 01 01 00 MAC: bf 08 05 fe b4 ac 7b 16 3d 6f cd f2 Touch Expires July 21, 2022 [Page 16] Internet-Draft TCP-AO Test Vectors January 2022 6.1.4. Receive (server) non-SYN (covers options) Receive_other_traffic_key: e4 a3 7a da 2a 0a fc a8 71 14 34 91 3f e1 38 c7 71 eb cb 4a IPv6/TCP: 6e 01 00 9e 00 73 06 40 fd 00 00 00 00 00 00 00 00 00 00 00 00 00 00 02 fd 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 00 b3 f7 e4 3f 51 99 4c 17 6a 83 83 c0 18 01 00 ee 6e 00 00 01 01 08 0a bd 33 12 a5 00 41 d0 91 1d 10 54 3d 6c 48 12 5c 11 33 5b ab 9a 07 a7 97 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 00 43 01 04 fd e8 00 b4 01 01 01 7a 26 02 06 01 04 00 01 00 01 02 02 80 00 02 02 02 00 02 02 42 00 02 06 41 04 00 00 fd e8 02 08 40 06 00 64 00 01 01 00 MAC: 6c 48 12 5c 11 33 5b ab 9a 07 a7 97 6.2. HMAC-SHA-1-96 (omits TCP options) 6.2.1. Send (client) SYN (omits options) Send_SYN_traffic_key: 31 a3 fa f6 9e ff ae 52 93 1b 7f 84 54 67 31 5c 27 0a 4e dc IPv6/TCP: 6e 07 8f cd 00 38 06 40 fd 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 fd 00 00 00 00 00 00 00 00 00 00 00 00 00 00 02 c6 cd 00 b3 02 0c 1e 69 00 00 00 00 e0 02 ff ff a4 1a 00 00 02 04 05 a0 01 03 03 08 04 02 08 0a 00 9d b9 5b 00 00 00 00 1d 10 3d 54 88 56 98 b0 53 0e d4 d5 a1 5f 83 46 Touch Expires July 21, 2022 [Page 17] Internet-Draft TCP-AO Test Vectors January 2022 MAC: 88 56 98 b0 53 0e d4 d5 a1 5f 83 46 6.2.2. Receive (server) SYN-ACK (omits options) Receive_SYN_traffic_key: 40 51 08 94 7f 99 65 75 e7 bd bc 26 d4 02 16 a2 c7 fa 91 bd IPv6/TCP: 6e 0a 7e 1f 00 38 06 40 fd 00 00 00 00 00 00 00 00 00 00 00 00 00 00 02 fd 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 00 b3 c6 cd eb a3 73 4d 02 0c 1e 6a e0 12 ff ff 77 4d 00 00 02 04 05 a0 01 03 03 08 04 02 08 0a 5e c9 9b 70 00 9d b9 5b 1d 10 54 3d 3c 54 6b ad 97 43 f1 2d f8 b8 01 0d MAC: 3c 54 6b ad 97 43 f1 2d f8 b8 01 0d 6.2.3. Send (client) non-SYN (omits options) Send_other_traffic_key: b3 4e ed 6a 93 96 a6 69 f1 c4 f4 f5 76 18 f3 65 6f 52 c7 ab Touch Expires July 21, 2022 [Page 18] Internet-Draft TCP-AO Test Vectors January 2022 IPv6/TCP: 6e 07 8f cd 00 73 06 40 fd 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 fd 00 00 00 00 00 00 00 00 00 00 00 00 00 00 02 c6 cd 00 b3 02 0c 1e 6a eb a3 73 4e c0 18 01 00 83 e6 00 00 01 01 08 0a 00 9d b9 65 5e c9 9b 70 1d 10 3d 54 48 bd 09 3b 19 24 e0 01 19 2f 5b f0 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 00 43 01 04 fd e8 00 b4 01 01 01 79 26 02 06 01 04 00 01 00 01 02 02 80 00 02 02 02 00 02 02 42 00 02 06 41 04 00 00 fd e8 02 08 40 06 00 64 00 01 01 00 MAC: 48 bd 09 3b 19 24 e0 01 19 2f 5b f0 6.2.4. Receive (server) non-SYN (omits options) Receive_other_traffic_key: 40 51 08 94 7f 99 65 75 e7 bd bc 26 d4 02 16 a2 c7 fa 91 bd IPv6/TCP: 6e 0a 7e 1f 00 73 06 40 fd 00 00 00 00 00 00 00 00 00 00 00 00 00 00 02 fd 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 00 b3 c6 cd eb a3 73 4e 02 0c 1e ad c0 18 01 00 71 6a 00 00 01 01 08 0a 5e c9 9b 7a 00 9d b9 65 1d 10 54 3d 55 9a 81 94 45 b4 fd e9 8d 9e 13 17 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 00 43 01 04 fd e8 00 b4 01 01 01 7a 26 02 06 01 04 00 01 00 01 02 02 80 00 02 02 02 00 02 02 42 00 02 06 41 04 00 00 fd e8 02 08 40 06 00 64 00 01 01 00 MAC: 55 9a 81 94 45 b4 fd e9 8d 9e 13 17 Touch Expires July 21, 2022 [Page 19] Internet-Draft TCP-AO Test Vectors January 2022 7. IPv6 AES-128 Output Test Vectors The AES-128 KDF and MAC algorithms, KDF_AES_128_CMAC and AES-128- CMAC-96, are computed as specified for TCP-AO [RFC5926] 7.1. AES-128-CMAC-96 (default - covers TCP options) 7.1.1. Send (client) SYN (covers options) Send_SYN_traffic_key: fa 5a 21 08 88 2d 39 d0 c7 19 29 17 5a b1 b7 b8 IP/TCP: 6e 04 a7 06 00 38 06 40 fd 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 fd 00 00 00 00 00 00 00 00 00 00 00 00 00 00 02 f8 5a 00 b3 19 3c cc ec 00 00 00 00 e0 02 ff ff de 5d 00 00 02 04 05 a0 01 03 03 08 04 02 08 0a 13 e4 ab 99 00 00 00 00 1d 10 3d 54 59 b5 88 10 74 81 ac 6d c3 92 70 40 MAC: 59 b5 88 10 74 81 ac 6d c3 92 70 40 7.1.2. Receive (server) SYN-ACK (covers options) Receive_SYN_traffic_key: cf 1b 1e 22 5e 06 a6 36 16 76 4a 06 7b 46 f4 b1 IPv6/TCP: 6e 06 15 20 00 38 06 40 fd 00 00 00 00 00 00 00 00 00 00 00 00 00 00 02 fd 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 00 b3 f8 5a a6 74 4e cb 19 3c cc ed e0 12 ff ff ea bb 00 00 02 04 05 a0 01 03 03 08 04 02 08 0a 71 da ab c8 13 e4 ab 99 1d 10 54 3d dc 28 43 a8 4e 78 a6 bc fd c5 ed 80 Touch Expires July 21, 2022 [Page 20] Internet-Draft TCP-AO Test Vectors January 2022 MAC: dc 28 43 a8 4e 78 a6 bc fd c5 ed 80 7.1.3. Send (client) non-SYN (covers options) Send_other_traffic_key: 61 74 c3 55 7a be d2 75 74 db a3 71 85 f0 03 00 IPv6/TCP: 6e 04 a7 06 00 73 06 40 fd 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 fd 00 00 00 00 00 00 00 00 00 00 00 00 00 00 02 f8 5a 00 b3 19 3c cc ed a6 74 4e cc c0 18 01 00 32 80 00 00 01 01 08 0a 13 e4 ab a3 71 da ab c8 1d 10 3d 54 7b 6a 45 5c 0d 4f 5f 01 83 5b aa b3 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 00 43 01 04 fd e8 00 b4 01 01 01 79 26 02 06 01 04 00 01 00 01 02 02 80 00 02 02 02 00 02 02 42 00 02 06 41 04 00 00 fd e8 02 08 40 06 00 64 00 01 01 00 MAC: 7b 6a 45 5c 0d 4f 5f 01 83 5b aa b3 7.1.4. Receive (server) non-SYN (covers options) Receive_other_traffic_key: cf 1b 1e 22 5e 06 a6 36 16 76 4a 06 7b 46 f4 b1 Touch Expires July 21, 2022 [Page 21] Internet-Draft TCP-AO Test Vectors January 2022 IPv6/TCP: 6e 06 15 20 00 73 06 40 fd 00 00 00 00 00 00 00 00 00 00 00 00 00 00 02 fd 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 00 b3 f8 5a a6 74 4e cc 19 3c cd 30 c0 18 01 00 52 f4 00 00 01 01 08 0a 71 da ab d3 13 e4 ab a3 1d 10 54 3d c1 06 9b 7d fd 3d 69 3a 6d f3 f2 89 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 00 43 01 04 fd e8 00 b4 01 01 01 7a 26 02 06 01 04 00 01 00 01 02 02 80 00 02 02 02 00 02 02 42 00 02 06 41 04 00 00 fd e8 02 08 40 06 00 64 00 01 01 00 MAC: c1 06 9b 7d fd 3d 69 3a 6d f3 f2 89 7.2. AES-128-CMAC-96 (omits TCP options) 7.2.1. Send (client) SYN (omits options) Send_SYN_traffic_key: a9 4f 51 12 63 e4 09 3d 35 dd 81 8c 13 bb bf 53 IPv6/TCP: 6e 09 3d 76 00 38 06 40 fd 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 fd 00 00 00 00 00 00 00 00 00 00 00 00 00 00 02 f2 88 00 b3 b0 1d a7 4a 00 00 00 00 e0 02 ff ff 75 ff 00 00 02 04 05 a0 01 03 03 08 04 02 08 0a 14 27 5b 3b 00 00 00 00 1d 10 3d 54 3d 45 b4 34 2d e8 bb 15 30 84 78 98 MAC: 3d 45 b4 34 2d e8 bb 15 30 84 78 98 Touch Expires July 21, 2022 [Page 22] Internet-Draft TCP-AO Test Vectors January 2022 7.2.2. Receive (server) SYN-ACK (omits options) Receive_SYN_traffic_key: 92 de a5 bb c7 8b 1d 9f 5b 29 52 e9 cd 30 64 2a IPv6/TCP: 6e 0c 60 0a 00 38 06 40 fd 00 00 00 00 00 00 00 00 00 00 00 00 00 00 02 fd 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 00 b3 f2 88 a6 24 61 45 b0 1d a7 4b e0 12 ff ff a7 0c 00 00 02 04 05 a0 01 03 03 08 04 02 08 0a 17 82 24 5b 14 27 5b 3b 1d 10 54 3d 1d 01 f6 c8 7c 6f 93 ac ff a9 d4 b5 MAC: 1d 01 f6 c8 7c 6f 93 ac ff a9 d4 b5 7.2.3. Send (client) non-SYN (omits options) Send_other_traffic_key: 4f b2 08 6e 40 2c 67 90 79 ed 65 d4 bf 97 69 3d IPv6/TCP: 6e 09 3d 76 00 73 06 40 fd 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 fd 00 00 00 00 00 00 00 00 00 00 00 00 00 00 02 f2 88 00 b3 b0 1d a7 4b a6 24 61 46 c0 18 01 00 c3 6d 00 00 01 01 08 0a 14 27 5b 4f 17 82 24 5b 1d 10 3d 54 29 0c f4 14 cc b4 7a 33 32 76 e7 f8 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 00 43 01 04 fd e8 00 b4 01 01 01 79 26 02 06 01 04 00 01 00 01 02 02 80 00 02 02 02 00 02 02 42 00 02 06 41 04 00 00 fd e8 02 08 40 06 00 64 00 01 01 00 MAC: 29 0c f4 14 cc b4 7a 33 32 76 e7 f8 Touch Expires July 21, 2022 [Page 23] Internet-Draft TCP-AO Test Vectors January 2022 7.2.4. Receive (server) non-SYN (omits options) Receive_other_traffic_key: 92 de a5 bb c7 8b 1d 9f 5b 29 52 e9 cd 30 64 2a IPv6/TCP: 6e 0c 60 0a 00 73 06 40 fd 00 00 00 00 00 00 00 00 00 00 00 00 00 00 02 fd 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 00 b3 f2 88 a6 24 61 46 b0 1d a7 8e c0 18 01 00 34 51 00 00 01 01 08 0a 17 82 24 65 14 27 5b 4f 1d 10 54 3d 99 51 5f fc d5 40 34 99 f6 19 fd 1b ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 00 43 01 04 fd e8 00 b4 01 01 01 7a 26 02 06 01 04 00 01 00 01 02 02 80 00 02 02 02 00 02 02 42 00 02 06 41 04 00 00 fd e8 02 08 40 06 00 64 00 01 01 00 MAC: 99 51 5f fc d5 40 34 99 f6 19 fd 1b 8. Observed Implementation Errors The following is a partial list of implementation errors that this set of test vectors is intended to validate. 8.1. Algorithm issues o Underlying implementation of HMAC-SHA-1-96 or AES-128-CMAC-96 does not pass their corresponding test vectors [RFC2202] [RFC4493] o The SNE algorithm does not consider corner cases, possibly because the pseudocode in [RFC5925] was not intended as complete, as discussed in [RFC9187], the latter of which includes its own validation sequence. 8.2. Algorithm parameters o KDF context length is incorrect, e.g. it does not include TCP header length + payload length (it should, per 5.2 of TCP-AO [RFC5925]) Touch Expires July 21, 2022 [Page 24] Internet-Draft TCP-AO Test Vectors January 2022 o KDF calculation does not start from counter i = 1 (it should, per Sec. 3.1.1 of the TCP-AO crypto algorithms [RFC5926]) o KDF calculation does not include output length in bits, contained in two bytes in network byte order (it should, per Sec. 3.1.1 of the TCP-AO crypto algorithms [RFC5926]) o KDF uses keys generated from current TCP segment sequence numbers (KDF should use only local and remote ISNs or zero, as indicated in Sec. 5.2 of TCP-AO [RFC5925]) 8.3. String handling issues The strings indicated in TCP-AO and its algorithms are indicated as a sequence of bytes of known length. In some implementations, string lengths are indicated by a terminal value (e.g., zero in C). This terminal value is not included as part of the string for calculations. o Password includes the last zero-byte (it should not) o Label "TCP-AO" includes the last zero byte (it should not) 8.4. Header coverage issues o TCP checksum and/or MAC is not zeroed properly before calculation (both should be) o TCP header is not included to the MAC calculation (it should be) o TCP options are not included to the MAC calculation by default (there is a separate parameter in the master key tuple to ignore options; this document provides test vectors for both options- included and options-excluded cases) 9. Security Considerations This document is intended to assist in the validation of implementations of TCP-AO, to further enable its more widespread use as a security mechanism to authenticate not only TCP payload contents but the TCP headers and protocol. The master_key of "testvector" used here for test vector generation SHOULD NOT be used operationally. Touch Expires July 21, 2022 [Page 25] Internet-Draft TCP-AO Test Vectors January 2022 10. IANA Considerations This document contains no IANA issues. This section should be removed upon publication as an RFC. 11. References 11.1. Normative References [RFC791] Postel, J., "Internet Protocol," RFC 791, Sept. 1981. [RFC793] Postel, J., "Transmission Control Protocol," RFC 793, September 1981. [RFC2018] Mathis, M., J. Mahdavi, S. Floyd, A. Romanow, "TCP Selective Acknowledgment Options," RFC 2018, Oct. 1996. [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels," BCP 14, RFC 2119, March 1997. [RFC5925] Touch, J., A. Mankin, R. Bonica, "The TCP Authentication Option," RFC 5925, June 2010. [RFC5926] Lebovitz, G., and E. Rescorla, "Cryptographic Algorithms for the TCP Authentication Option (TCP-AO)," RFC 5926, June 2010. [RFC6978] Touch, J., "A TCP Authentication Option Extension for NAT Traversal," RFC 6978, July 2013. [RFC7323] Borman, D., B. Braden, V. Jacobson, R. Scheffenegger, Ed., "TCP Extensions for High Performance," RFC 7323, Sept. 2014. [RFC8174] Leiba, B., "Ambiguity of Uppercase vs Lowercase in RFC 2119 Key Words," RFC 8174, May 2017. [RFC8200] Deering, S., R. Hinden, "Internet Protocol Version 6 (IPv6) Specification," RFC 8200, Jul. 2017. 11.2. Informative References [RFC2202] Cheng, P., and R. Glenn, "Test Cases for HMAC-MD5 and HMAC-SHA-1," RFC 2202, Sept. 1997. [RFC4493] Song, JH, R. Poovendran, J. Lee, T. Iwata, "The AES-CMAC Algorithm," RFC 4493, June 2006. Touch Expires July 21, 2022 [Page 26] Internet-Draft TCP-AO Test Vectors January 2022 [RFC9187] Touch, J., "Sequence Number Extension for Windowed Protocols," RFC 9187, Jan. 2022. 12. Acknowledgments This document was prepared using 2-Word-v2.0.template.dot. Authors' Addresses Joe Touch Manhattan Beach, CA 90266 USA Phone: +1 (310) 560-0334 Email: touch@strayalpha.com Juhamatti Kuusisaari Infinera Corporation Sinimaentie 6c FI-02630 Espoo, Finland Email: jkuusisaari@infinera.com Touch Expires July 21, 2022 [Page 27]