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liboqs/docs/algorithms/sig/falcon.md
Spencer Wilson aeac3a441d
Pull new HQC implementation from upstream (#1585) 
* Update Sphincs+ PQClean patch

* Don't apply PQClean Dilithium and Kyber patches

* Run copy_from_upstream; don't apply Dilithium and Kyber changes

* Run HQC KATs with custom PRNG

* Satisfy astyle

* Add licence for common code

* Fix CI build errors

* Update HQC version, OQS version, and SOVERSION

* Move HQC PRNG into test file

* Satisfy astyle

* Fix SHA3 link error

* Reset HQC issues/passes

* fixup! Fix SHA3 link error

* fix kat_kem linkage to make HQC PR pass CI (#1601)

* fix kat_kem linkage

* remove armhf CI support

* Revert "remove armhf CI support"

This reverts commit af759bbf743bb3ecc2e7315cf10c1785e93bcc05.

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Co-authored-by: Michael Baentsch <57787676+baentsch@users.noreply.github.com>
2023-11-06 16:40:50 -05:00

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Falcon

  • Algorithm type: Digital signature scheme.
  • Main cryptographic assumption: hardness of NTRU lattice problems.
  • Principal submitters: Thomas Prest.
  • Auxiliary submitters: Pierre-Alain Fouque, Jeffrey Hoffstein, Paul Kirchner, Vadim Lyubashevsky, Thomas Pornin, Thomas Prest, Thomas Ricosset, Gregor Seiler, William Whyte, Zhenfei Zhang.
  • Authors' website: https://falcon-sign.info
  • Specification version: 20211101.
  • Primary Source:
    • Source: 0657749a78
    • Implementation license (SPDX-Identifier): MIT

Parameter set summary

Parameter set Security model Claimed NIST Level Public key size (bytes) Secret key size (bytes) Signature size (bytes)
Falcon-512 EUF-CMA 1 897 1281 666
Falcon-1024 EUF-CMA 5 1793 2305 1280

Falcon-512 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 clean All All None True True False
Primary Source avx2 x86_64 All AVX2 False False False
Primary Source aarch64 ARM64_V8 Linux,Darwin None False 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.

Falcon-1024 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 clean All All None True True False
Primary Source avx2 x86_64 All AVX2 False False False
Primary Source aarch64 ARM64_V8 Linux,Darwin None False 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.