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liboqs/docs/algorithms/kem/kyber.md
Douglas Stebila fd1b89724a
Update SPHINCS+ (#1420) 
* Switch to new PQClean commit for SPHINCS+ and remove old patch file

* Improve "compilability" on Apple M1 (ARM) (#1421)

* correct ARM SHA3 extension addition

* correct compile option for ARM SHA

* correct SHA3 enablement

* Remove SPHINCS+ robust and Haraka variants

* Fix SHA2 block sizes in OpenSSL wrapper

* enable Keccak for Sphincs even if OpenSSL shall provide SHA3

* properly handle xkcp enablement if only specific algorithms are selected

* correct conditional setting

* re-enable XKCP for other platforms

* Windows support

* alternate pqcrystals-AES removal

---------

Co-authored-by: Michael Baentsch <57787676+baentsch@users.noreply.github.com>
2023-05-16 10:54:28 -04:00

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Kyber

  • Algorithm type: Key encapsulation mechanism.
  • Main cryptographic assumption: Module LWE+R with base ring Z[x]/(3329, x^256+1).
  • Principal submitters: Peter Schwabe.
  • Auxiliary submitters: Roberto Avanzi, Joppe Bos, Léo Ducas, Eike Kiltz, Tancrède Lepoint, Vadim Lyubashevsky, John M. Schanck, Gregor Seiler, Damien Stehlé.
  • Authors' website: https://pq-crystals.org/
  • Specification version: NIST Round 3 submission.
  • Primary Source:
    • Source: 518de2414a with copy_from_upstream patches
    • Implementation license (SPDX-Identifier): CC0-1.0 or Apache-2.0
  • Optimized Implementation sources: 518de2414a with copy_from_upstream patches
    • pqclean-aarch64:
      • Source: c1b19a865d with copy_from_upstream patches
      • Implementation license (SPDX-Identifier): CC0-1.0

Parameter set summary

Parameter set Security model Claimed NIST Level Public key size (bytes) Secret key size (bytes) Ciphertext size (bytes) Shared secret size (bytes)
Kyber512 IND-CCA2 1 800 1632 768 32
Kyber768 IND-CCA2 3 1184 2400 1088 32
Kyber1024 IND-CCA2 5 1568 3168 1568 32

Kyber512 implementation characteristics

Implementation source Identifier in upstream Supported architecture(s) Supported operating system(s) CPU extension(s) used No branching-on-secrets claimed? No branching-on-secrets checked by valgrind? Large stack usage?‡
Primary Source ref All All None True True False
Primary Source avx2 x86_64 Linux,Darwin AVX2,BMI2,POPCNT True True False
pqclean-aarch64 aarch64 ARM64_V8 Linux,Darwin None True False False

Are implementations chosen based on runtime CPU feature detection? Yes.

‡For an explanation of what this denotes, consult the Explanation of Terms section at the end of this file.

Kyber768 implementation characteristics

Implementation source Identifier in upstream Supported architecture(s) Supported operating system(s) CPU extension(s) used No branching-on-secrets claimed? No branching-on-secrets checked by valgrind? Large stack usage?
Primary Source ref All All None True True False
Primary Source avx2 x86_64 Linux,Darwin AVX2,BMI2,POPCNT True True False
pqclean-aarch64 aarch64 ARM64_V8 Linux,Darwin None True False False

Are implementations chosen based on runtime CPU feature detection? Yes.

Kyber1024 implementation characteristics

Implementation source Identifier in upstream Supported architecture(s) Supported operating system(s) CPU extension(s) used No branching-on-secrets claimed? No branching-on-secrets checked by valgrind? Large stack usage?
Primary Source ref All All None True True False
Primary Source avx2 x86_64 Linux,Darwin AVX2,BMI2,POPCNT True True False
pqclean-aarch64 aarch64 ARM64_V8 Linux,Darwin None True False False

Are implementations chosen based on runtime CPU feature detection? Yes.

Explanation of Terms

  • Large Stack Usage: Implementations identified as having such may cause failures when running in threads or in constrained environments.