Internet-Draft COSE Kyber November 2022
Steele Expires 17 May 2023 [Page]
Workgroup:
CBOR Object Signing and Encryption
Internet-Draft:
draft-steele-cose-kyber-00
Published:
Intended Status:
Informational
Expires:
Author:
O. Steele
Transmute

COSE Kyber

Abstract

This specification defines how to represent cryptographic keys for Kyber, an IND-CCA2-secure key encapsulation mechanism (KEM), for use with the key representation formats of JSON Web Key (JWK) and COSE (COSE_Key).

About This Document

This note is to be removed before publishing as an RFC.

Status information for this document may be found at https://datatracker.ietf.org/doc/draft-steele-cose-kyber/.

Discussion of this document takes place on the cose Working Group mailing list (mailto:cose@ietf.org), which is archived at https://mailarchive.ietf.org/arch/browse/cose/. Subscribe at https://www.ietf.org/mailman/listinfo/cose/.

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). Note that other groups may also distribute working documents as Internet-Drafts. The list of current Internet-Drafts is at https://datatracker.ietf.org/drafts/current/.

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."

This Internet-Draft will expire on 17 May 2023.

Table of Contents

1. Introduction

TODO Introduction

For additional details regarding kyber see pq-crystals.org/kyber.

2. Conventions and Definitions

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.

2.1. Representation Definition

The following definitions apply to the lattice based key encapsulation mechanism known as Kyber.

2.1.1. JSON Web Key Representation

When expressing a cryptographic key for these lattices in JSON Web Key (JWK) form, the following rules apply:

  • The parameter "kty" MUST be present and set to "OKP".
  • The parameter "lat" MUST be present and value MUST be one defined in (#lattice-parameter-registration).
  • The parameter "x" MUST be present whose value represents the public key. This value MUST be encoded using the serialization defined in [I-D.draft-cfrg-schwabe-kyber] Appendix C and MUST be base64url encoded without padding as defined in [RFC7515] Appendix C.
  • The parameter "d" MUST be present for private key representations whose value MUST contain the little-endian representation of the private key base64url encoded without padding as defined in [RFC7515] Appendix C. This parameter MUST NOT be present for public keys.

2.1.2. Lattice Parameter Registration

Table 1
kty lat
OKP Kyber-1024
OKP Kyber-768
OKP Kyber-512

3. Security Considerations

TODO Security

4. Test Vectors

TODO Test Vectors

4.1. OKP Kyber-1024

4.1.1. publicKeyJwk

{ "kty": "OKP", "lat": "Kyber-1024", "x":\ "WhsBzzR94zp2ZaVSpddmugzAoZRgfoMPiAFqbthmRMxXIAZQMytvYIYPQEQyINitxxa\ \hPgd7b6Ix4PIpSpkeUnSSJxgY0KAtuiyiHoa2uQIjHkhsNNh3PFcCdvYUvVUwGtonEY\ \WrwGMW0SyzGFFqrbKDPsUPzmk7AQy6GSoVv7CfchlVcFmN6WaRZMrLO2hU1cN60Xwd8\ \UQXwBA9YwxeD1y9YCKvUTUV8YdfDLs2zZUTEOu7mccBkPgUYfV80jeXpdsqfFRyQ1gT\ \D2tLLuUKnvrACdCxNmfGZxQcWgA37_AR6eBVKyWsMwbMtPFd7olXiSyLrTscLsgYFKL\ \MGDk5L6RJzfujPzNwwEIU-UCVknNuSHq16bF_Czy7gwXKdoNpzEOJG7FL1BI2j-eAOo\ \oGEZKIOHq8qMqc-cc7SHyJnrYQESlp3zx9yXcscrRMCcaO6xGTLpBDlEGKTaopl_rCG\ \cceRWmFCoBnj2xotjpLeuw7dwer9kS089KFZToGr0vCfYm4wkJgSXFQYPCyvpFTfbQW\ \x_eIpwp4FCep2mZ92pyi1pYwHVIsVABfnXo_H_pd0ESPzntHOcs0VPjA1nWYglBJqkG\ \c11u2KtBUJ_OmmyYedqxxOnW2uxWFqFtGC8ijk4JL0tKxvOZUNJA9AKYoBbOFoJtwCS\ \N623hj4OhZfqVcaREvjJWFyVxc7mfIqsNP10wrPGa3UJMMXxaJd0svEFdBNMylj5Cdd\ \kabp1V7-ux2ckS7PbJ-noGZCip2fMdU4tUT4jEkyglY4AuViJQKu8Ef0DGcq3BEpEZr\ \s1FMQHEOpvAbw0RDtMl8vuqWkZy8VeAATVCrV5UN7cIH7-FnlVIDlZu4APmbTopZ2MR\ \0mqlQtoSAtAGK-Zk4REPPnfGgq7Q2_YgrQHJu8NmWSRLPPDu8NuxzIySFbTgpQNawTJ\ \uGG5NoOnKihrSARgEItNtRlZUUruC7JeSUjOab5uO8R2SAUVBEMSdob0MBQlI1zHdO7\ \LdO_0CpUjB41odGy7B4SSMLXOggoaAe-6a3uKeK5kwzXaBpcPMCZ1Ie-jcjiTCDRdsg\ \qflfe9hlZHx7b9lNM7JEJ6grTHNF1jA7WEE_j8dhnxBIf_N3fYop-xSNIqibL8iixZP\ \Bz0xYDtBbYoQZhSaBKCdL5qGNMklhpAEKryFo96G8UbEBOrAMRSqMRtKjnDo5XkHMl1\ \hsN5VnCPShwTJ45Kwb-eVR0uOvC5u1wiQV1Ju-YRR6dptiHXXLhLs1m7c_EVwAyXBca\ \oevMtNvZSMOQTGR0pCGMfUyesO5eXscxqAtYFzL2jnHhaqd0rk1LDa3UOV18BKK1LS5\ \Sgcr4xYWUPI7hTZgL2Z83IcMHMjKjXOLGXzHt-dId4qGtSVKAWKVBFYPgoMM53hfvYV\ \sfYCDfeqvo2iv_Nlh8XysLQpqSlIE5YRdOIOiInopKPE92fNORzxu0OF3x0WFOQwZo6\ \Cg0FgHpyC3ayCkJHcxmZUrk-oHTpEPgBxQdsF-0hUkZglzzQokI2oIxMACY4izsdyeX\ \NShDGM68vd3qyFrX_bF2UPG1dC-Lml9ziu_K6AlvReI9RA-W1lqLfV6ONYsrdiukASa\ \J6wn-5iK1dKvPoQ6gTstROaEIpAhBtcUUWqx0cYYHOzI5BWKGsGZTiB75nM9udW8IQY\ \mxTlaS7bH5IgbDNqk5qsrwopC6BBTHzsnC3q153GeL9w373Y8eiqrzcZlVxh-j9O4Fl\ \hFiQobqsIOv1dssGBX2jxaA6dqMjuPyXA3MPeiuCMYNIud9tYET_mgSuCE6lpmPyEwD\ \PZ8FuyUfGdOjRpPXAl6LnR_uJiZc2IGowhAiRl7b1Gt1Se7NqJEijpiWnKP_FTCctoD\ \onZv4VuNBbhgd7jEIcOkeTa0v_NplBhc7Oa-UzcP02FdRfhe_ABNlgtofKGL3JoAL1h\ \IL5NV4DOEkGQEEUmT5zdj3QBW92gOPmqTLblpSPIawWhIgjs_zBy6yMgX-kmHjiqRbL\ \GjAPQihgx02gJNl0ak8wakDwas0UU8FwEBFgjIqeGoS70kuJkh3mahkk8YbSxXB1AzE\ \LxuOCl5TOexDg4" }

4.1.2. privateKeyJwk

json { "kty": "OKP", "lat": "Kyber-1024", "x":\ "WhsBzzR94zp2ZaVSpddmugzAoZRgfoMPiAFqbthmRMxXIAZQMytvYIYPQEQyINitxxa\ \hPgd7b6Ix4PIpSpkeUnSSJxgY0KAtuiyiHoa2uQIjHkhsNNh3PFcCdvYUvVUwGtonEY\ \WrwGMW0SyzGFFqrbKDPsUPzmk7AQy6GSoVv7CfchlVcFmN6WaRZMrLO2hU1cN60Xwd8\ \UQXwBA9YwxeD1y9YCKvUTUV8YdfDLs2zZUTEOu7mccBkPgUYfV80jeXpdsqfFRyQ1gT\ \D2tLLuUKnvrACdCxNmfGZxQcWgA37_AR6eBVKyWsMwbMtPFd7olXiSyLrTscLsgYFKL\ \MGDk5L6RJzfujPzNwwEIU-UCVknNuSHq16bF_Czy7gwXKdoNpzEOJG7FL1BI2j-eAOo\ \oGEZKIOHq8qMqc-cc7SHyJnrYQESlp3zx9yXcscrRMCcaO6xGTLpBDlEGKTaopl_rCG\ \cceRWmFCoBnj2xotjpLeuw7dwer9kS089KFZToGr0vCfYm4wkJgSXFQYPCyvpFTfbQW\ \x_eIpwp4FCep2mZ92pyi1pYwHVIsVABfnXo_H_pd0ESPzntHOcs0VPjA1nWYglBJqkG\ \c11u2KtBUJ_OmmyYedqxxOnW2uxWFqFtGC8ijk4JL0tKxvOZUNJA9AKYoBbOFoJtwCS\ \N623hj4OhZfqVcaREvjJWFyVxc7mfIqsNP10wrPGa3UJMMXxaJd0svEFdBNMylj5Cdd\ \kabp1V7-ux2ckS7PbJ-noGZCip2fMdU4tUT4jEkyglY4AuViJQKu8Ef0DGcq3BEpEZr\ \s1FMQHEOpvAbw0RDtMl8vuqWkZy8VeAATVCrV5UN7cIH7-FnlVIDlZu4APmbTopZ2MR\ \0mqlQtoSAtAGK-Zk4REPPnfGgq7Q2_YgrQHJu8NmWSRLPPDu8NuxzIySFbTgpQNawTJ\ \uGG5NoOnKihrSARgEItNtRlZUUruC7JeSUjOab5uO8R2SAUVBEMSdob0MBQlI1zHdO7\ \LdO_0CpUjB41odGy7B4SSMLXOggoaAe-6a3uKeK5kwzXaBpcPMCZ1Ie-jcjiTCDRdsg\ \qflfe9hlZHx7b9lNM7JEJ6grTHNF1jA7WEE_j8dhnxBIf_N3fYop-xSNIqibL8iixZP\ \Bz0xYDtBbYoQZhSaBKCdL5qGNMklhpAEKryFo96G8UbEBOrAMRSqMRtKjnDo5XkHMl1\ \hsN5VnCPShwTJ45Kwb-eVR0uOvC5u1wiQV1Ju-YRR6dptiHXXLhLs1m7c_EVwAyXBca\ \oevMtNvZSMOQTGR0pCGMfUyesO5eXscxqAtYFzL2jnHhaqd0rk1LDa3UOV18BKK1LS5\ \Sgcr4xYWUPI7hTZgL2Z83IcMHMjKjXOLGXzHt-dId4qGtSVKAWKVBFYPgoMM53hfvYV\ \sfYCDfeqvo2iv_Nlh8XysLQpqSlIE5YRdOIOiInopKPE92fNORzxu0OF3x0WFOQwZo6\ \Cg0FgHpyC3ayCkJHcxmZUrk-oHTpEPgBxQdsF-0hUkZglzzQokI2oIxMACY4izsdyeX\ \NShDGM68vd3qyFrX_bF2UPG1dC-Lml9ziu_K6AlvReI9RA-W1lqLfV6ONYsrdiukASa\ \J6wn-5iK1dKvPoQ6gTstROaEIpAhBtcUUWqx0cYYHOzI5BWKGsGZTiB75nM9udW8IQY\ \mxTlaS7bH5IgbDNqk5qsrwopC6BBTHzsnC3q153GeL9w373Y8eiqrzcZlVxh-j9O4Fl\ \hFiQobqsIOv1dssGBX2jxaA6dqMjuPyXA3MPeiuCMYNIud9tYET_mgSuCE6lpmPyEwD\ \PZ8FuyUfGdOjRpPXAl6LnR_uJiZc2IGowhAiRl7b1Gt1Se7NqJEijpiWnKP_FTCctoD\ \onZv4VuNBbhgd7jEIcOkeTa0v_NplBhc7Oa-UzcP02FdRfhe_ABNlgtofKGL3JoAL1h\ \IL5NV4DOEkGQEEUmT5zdj3QBW92gOPmqTLblpSPIawWhIgjs_zBy6yMgX-kmHjiqRbL\ \GjAPQihgx02gJNl0ak8wakDwas0UU8FwEBFgjIqeGoS70kuJkh3mahkk8YbSxXB1AzE\ \LxuOCl5TOexDg4", "d":\ "kkFs-2JB7qgGenc4aRKADMKlbvxSnoS2TzGR0BaMegaaMrsFt8S9t8VousoUSchKnou\ \aD5lb86tixtoOMRs-xFdFADluFNl57bp2uHplvxoF6HZoKkA3pPC3R4e311UWcGux_E\ \BUgIehGANR0rqcefRQ-daTPlB8d7bEDytdHPSv50hnk1OId9DM80gFvNifWhMpkEW9M\ \ac7YAQV8lRCqptnc-peDvIjF6kck1terydS1SdsvNs80gLFDfCVYPydx3IiVfFmvhYe\ \QjY1tCEVaWoNcEWH9IN7F2YiVxYQbFwZLCBhdEyejtGNXnHJYPBR5mSWbeaYiLAJ-mi\ \uBmNaTCONlNoXz_u0Q_dhayUHCXuWRhgqECagVoYvwZAj3eKHJKSy8bOd5sZi0Yi5xb\ \EcvUtB6eOWN8uQalGGHMc2lWN6npZvOGJ5MiVUf0lexEV-PSdT4IuQEgqHwybA2hMCu\ \XeMRcGCWpgvL6uMiNBL7GrAOwkb__qbvbhMrJbNsgOBhauk0xIxM_uouwRj4GnFp_Kp\ \vZQ1DhOeUogfjNqPoEFBBuyv3USzP_QsAjua6pqCkXgkvfeZEaoyBrAEZXB5M0pZenR\ \sPiarw7pdFKFQtxMI51xtpwynNLnHSahkaLuRlrkcezK4wQIVy8F4wQJ4CrAabNI9-s\ \xYZlbDr3x3OIptyVbCvckSfKdofIXJCGGBdmqXuvOwVfpxqjRhHrOkpZo7B2AwrKRLP\ \oseIvp2hKR8MwY_7UVk5tNCnXil2Xc1pnZHeFs4fBi1C9vEUhAozgRteYG5D4pZFTsZ\ \MZCHycpt_rDGjLMV48CbhzlH_uReMBoNLia1WhUPVzqYULsRm6hfVvo1mlScdSajy8G\ \bjwxejShgy0HCufM_rmK7WjS3JAo-C4ShqJVCCJo1slxMMUQcsnxFUKcq_5CzePyMgs\ \vE6KIVODWlsYceecJ0KKdb1YJgOyC3Zdosw6CEhlJ_Cnd8Zfp5yTtb_uK_qdKBY6YWm\ \eVYGbuEASi-G5hmJHB52MPNhvdq8Ai3Q5tEDrk6N_iQ5PGRoMWjG8UxZpCj_NiH1XWp\ \ThCA-qVaFnq2sNSal8rOO5h-I3wiuzphSgktIPVJ7BouuDhNp6mD01Yb8ukzEwAFv0B\ \Js1pr-LNFadgELRuNVbt1dKYVRxFszwqCIIY3K4o-t7QuY9NKKOl_WXaCOVCxOhRDAr\ \RBJ_KGpqkbZ6FAjQyPQMykxpl-sCAOt7YAAigpHViydgsGQJScw0lBEDEU3LwcBVao5\ \UAXlZuvuCde2VMF7eYBZfVA_nBhrvtfPPsqK1NkordaaWuqx3FlqXpQVdKHRYmlish8\ \G4xxjiBcOZnOOhwcg2CmV-FH4bZ9GeHJCHGgd2aVRzxGgNJQy_aXlKUvvfzDDfZeO0B\ \ZajyjS6s_KbVFKVmMZgNoC3V3NVi8qYKJtnQWodgKVrm19XtgMlt_IXuUy5EHrqzH9u\ \hbRVws5vdPHyit7ppq5nKJYHZ9vxwI5pVEkpXBGHIixmZB_McB5zU9zkWINUO5xip70\ 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\XOLGXzHt-dId4qGtSVKAWKVBFYPgoMM53hfvYVsfYCDfeqvo2iv_Nlh8XysLQpqSlIE\ \5YRdOIOiInopKPE92fNORzxu0OF3x0WFOQwZo6Cg0FgHpyC3ayCkJHcxmZUrk-oHTpE\ \PgBxQdsF-0hUkZglzzQokI2oIxMACY4izsdyeXNShDGM68vd3qyFrX_bF2UPG1dC-Lm\ \l9ziu_K6AlvReI9RA-W1lqLfV6ONYsrdiukASaJ6wn-5iK1dKvPoQ6gTstROaEIpAhB\ \tcUUWqx0cYYHOzI5BWKGsGZTiB75nM9udW8IQYmxTlaS7bH5IgbDNqk5qsrwopC6BBT\ \HzsnC3q153GeL9w373Y8eiqrzcZlVxh-j9O4FlhFiQobqsIOv1dssGBX2jxaA6dqMju\ \PyXA3MPeiuCMYNIud9tYET_mgSuCE6lpmPyEwDPZ8FuyUfGdOjRpPXAl6LnR_uJiZc2\ \IGowhAiRl7b1Gt1Se7NqJEijpiWnKP_FTCctoDonZv4VuNBbhgd7jEIcOkeTa0v_Npl\ \Bhc7Oa-UzcP02FdRfhe_ABNlgtofKGL3JoAL1hIL5NV4DOEkGQEEUmT5zdj3QBW92gO\ \PmqTLblpSPIawWhIgjs_zBy6yMgX-kmHjiqRbLGjAPQihgx02gJNl0ak8wakDwas0UU\ \8FwEBFgjIqeGoS70kuJkh3mahkk8YbSxXB1AzELxuOCl5TOexDg72vmGI7tHAdjRysc\ \gjcWmxpLswUqKUKu4jZmt5nKoraZrIBvBRNRK0LQqN7KnTm8sXBefxSIaccTyiBKJdY\ \VCc" }

4.1.3. cyphertext

text iwkuhEMQ9Etgs_2vgDH3Xo9SSLGHKN2ajzCT8WhPLBdUWaU2aJjMGICqo-_e_hniJ30l\ \ZmH2OyDx3q399Z6qiEReY35EUNn-mixHCD9GZrx1eHv-UJCOHvODkQYdONsBDrEZO45\ \nxgAJ6GncQpF0z5cjwZ_efI_R5xlgPQQD4GxbRr1aE1fEy__ew9mms23k_xBi36wy0V\ \0FT3At6hV3VqpJuNaCMOuUn1FmusdcRHyDdMnbtoryxU3eADGZQLPY87VSzCORMtisj\ \LWJJGJYsixxeRqp_fD2ujYKySQPJutOfoSOTBSghv5aTlhCg5svWZz6f9mSD0EebXDJ\ \kzR2aMBkr6UfW4r9K0VYfBQ437l_uJ5l5NkZ9ZP-k7_oy318KCccO7Ur-o40fFYKm0i\ \AqMXTghwChxGy-nNyl5IZ0ElK3aiG6QZr0_wESQcNf37YLbgBoKVwNdn502_76wSYll\ \zY2s-RckiyE_39aT62Dl6JJbrDJLGtRkSWoLDmmUvCbWq4jAsyJR3WIk7deVZap-h7T\ \fAA0y6s_qRTbzIiKQdzm5jlyjUKIpoLicOB3KWNSbinRAi6ziL5-og1SE01iDZsfVKF\ \lzBAMKrYbzeVBxko_9PucXStC5Q1tZWao75mQVnUl2ZH06hgrJXzjgqkfrilEw46PoV\ \8fmcKcIOgHv8fYXNSoJA1ekzb3jciZRfbzsr18XOqqdDPQ1DfCaCurgJH5piZwvw-h8\ \k9ICPnLiQaPKA_1zKyZwgtcBrBaA2skKTblYeWOreK9q4mXJgFvsWop2MAHyzcegt_D\ \rkUVqLV4yiK7-shBG1yfe_hJb-SOaCBiNKm3K_XJEiSTO4g6-Pc0mEmSg0ZffE17Rqd\ \Kr2YjHA7Ct8BAWdtq5SWA8Lehhp0XpJnpb2pJg088LCkf6JMd9VD9G5JmIO5_9siLQ2\ \K70ty5dhaDwZynbsMIzHUXaEqaSBkwMSq1Awo_5Ed410DVuQB2QCmrduWMCvJ8inIQ9\ \JpvZvtrFghHhhwPXj20y3URNxjAx-BmcpJZkk4-no40OnaDYnO8s-PaPX-mjBUzKF6Z\ \31kJ9YgXp8rpt4uPGSVHmp8A49gPBqexiMaWeO9Rmo4NjF-8Nva3IqCMPfxeQ6UggNG\ \fCsPfVWda9vD0Jz32GJxFZwXcqIIJMe75Wl3FN-gCDBsiYEeGrghYnORjRKH6DfJyCa\ \CdumrdJzkwkvd47EteCXUr9Ko_FYMIDdKB-sH33tO3jlg7tJiwFQTZcNo7DW20R4Ixp\ \5Au6M1AwQ63Nyiu2nIQPaQTo9TKgUo0FJBKw5BFAwPQnBxeVwhiy49t_7-rxEsHtZj-\ \b144VmznDIZCxUsm43UaglcKwlUrf7SKDVtNhhY5eBh5uQDSQ_QxbxBEK8xJqoPG7A6\ \ozeFGi30r6UKhg-NhWcGeR5nGMV7wE4CLXUa2KL3ZK2D0_PezlY9JtIkO8_hKQxbXiT\ \AOJhuq0Lf3nUiPoU-mhfO5WhLEgSkD9emtBTsb09BsCuDJuHYXb6sthD86u5Dxr2oE1\ \HcA7iAjqHPVEzGE2VItnAGB2jIDClPvBdDbW07G3g6-DOg8vsoEIOCYQ7A0VKZO0bEy\ \Do2HH9hpSnnLhyBIAI5LA7qSA2qRTh5Voem4wLvsG4j1_akJGyATXBcJaQZsSWMT_pQ\ \DaMcej30Ll6ZeYMyZZrhdhDEAmpEA9By-ygFXJhMlne4ZEoO8dZdH2effO2nToX-7DF\ \5mivdb2dRc41IllRRqJvxk_umTdnj4PnNkEes3DzAC4Uh0oRRtOUjUJiZuoDpdGqM7K\ \G829ynmuxLxJrVhFsGfjJhfjtwbzTw0UmNIe__-KvcyPGCqnkim0jQg5QW0kZJFTzr7\ \g3pgMwHMRXPj1b7Q4jAxyh7e0FbuUZvkf72vUla2XA9yVkKrYQ8Sxh2ytlfa7BPGBF7\ \DZfwJZvqCp1NLzwJmfbkmYxNa0xqE9St4-GKKdFHvGdnyxwQLwvXRTIpI9h54HDAfo2\ \6GEqloUej_Pvc_O6jt8Xq9r-TPUu96FQc14EfznTJwC4Jr0f9tKjyIhyj9sylg62m8y\ \H5I1rK0bwlxaM

4.1.4. secret

text gl1XhlnH6KJDONLbOLrPCiOj962g48Sk-W67hoSBRTo

5. IANA Considerations

5.1. JSON Web Key Lattice Registry

This specification establishes the IANA "JSON Web Key Lattice" registry for values of the JWK "lat" (algorithm) parameters.

This section establishes the IANA "JSON Web Key Lattice" registry for JWK "lat" member values. The registry records the lattice name, implementation requirements, and a reference to the specification that defines it. This specification registers the parameter names defined in Section 2.1.2.

The implementation requirements of a lattice may be changed over time as the cryptographic landscape evolves, for instance, to change the status of a lattice to Deprecated or to change the status of a lattice from Optional to Recommended+ or Required. Changes of implementation requirements are only permitted on a Specification Required basis after review by the Designated Experts, with the new specification defining the revised implementation requirements level.

5.1.1. Registration Template

Lattice Name:

The name requested (e.g., "Kyber-768"). Because a core goal of this specification is for the resulting representations to be compact, it is RECOMMENDED that the name be short -- not to exceed 8 characters without a compelling reason to do so. This name is case sensitive. Names may not match other registered names in a case-insensitive manner unless the Designated Experts state that there is a compelling reason to allow an exception.

Lattice Description:

Brief description of the lattice (e.g., "Kyber-768 Lattice").

JOSE Implementation Requirements:

The lattice implementation requirements for JWS and JWE, which must be one the words Required, Recommended, Optional, Deprecated, or Prohibited. Optionally, the word can be followed by a "+" or "-". The use of "+" indicates that the requirement strength is likely to be increased in a future version of the specification. The use of "-" indicates that the requirement strength is likely to be decreased in a future version of the specification.

Change Controller:

For Standards Track RFCs, list "IESG". For others, give the name of the responsible party. Other details (e.g., postal address, email address, home page URI) may also be included.

Specification Document(s):

Reference to the document or documents that specify the parameter, preferably including URIs that can be used to retrieve copies of the documents. An indication of the relevant sections may also be included but is not required.

5.1.2. Initial Registry Contents

Kyber-768

  • Lattice Name: Kyber-768
  • Value: TBD (16 requested)
  • Key Type: OKP
  • Lattice Description: TODO
  • JOSE Implementation Requirements: Optional
  • Change Controller: IESG
  • Specification Document(s): Section 2.1.2
  • Recommended: Yes

6. References

6.1. Normative References

[RFC2119]
Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, DOI 10.17487/RFC2119, , <https://www.rfc-editor.org/rfc/rfc2119>.
[RFC7515]
Jones, M., Bradley, J., and N. Sakimura, "JSON Web Signature (JWS)", RFC 7515, DOI 10.17487/RFC7515, , <https://www.rfc-editor.org/rfc/rfc7515>.
[RFC8174]
Leiba, B., "Ambiguity of Uppercase vs Lowercase in RFC 2119 Key Words", BCP 14, RFC 8174, DOI 10.17487/RFC8174, , <https://www.rfc-editor.org/rfc/rfc8174>.

6.2. Informative References

[I-D.draft-cfrg-schwabe-kyber]
Schwabe, P. and B. Westerbaan, "Kyber Post-Quantum KEM", Work in Progress, Internet-Draft, draft-cfrg-schwabe-kyber-01, , <https://datatracker.ietf.org/doc/html/draft-cfrg-schwabe-kyber-01>.

Acknowledgments

TODO acknowledge.

Author's Address

Orie Steele
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