name: Falcon
type: signature
principal-submitters:
- Thomas Prest
auxiliary-submitters:
- Pierre-Alain Fouque
- Jeffrey Hoffstein
- Paul Kirchner
- Vadim Lyubashevsky
- Thomas Pornin
- Thomas Ricosset
- Gregor Seiler
- William Whyte
- Zhenfei Zhang
crypto-assumption: hardness of NTRU lattice problems
website: https://falcon-sign.info
nist-round: 3
spec-version: v1.2
spdx-license-identifier: MIT
upstream: https://github.com/PQClean/PQClean/commit/6a32796212b79a5f9126d0a933e1216313f50c16
upstream-ancestors:
- https://github.com/jschanck/package-pqclean/tree/cea1fa5a/falcon
- supercop-20201018
parameter-sets:
- name: Falcon-512
  claimed-nist-level: 1
  claimed-security: EUF-CMA
  length-public-key: 897
  length-secret-key: 1281
  length-signature: 690
  implementations-switch-on-runtime-cpu-features: true
  implementations:
  - upstream-id: clean
    supported-platforms: all
    common-crypto:
    - SHA3: liboqs
    no-secret-dependent-branching-claimed: true
    no-secret-dependent-branching-checked-by-valgrind: true
    large-stack-usage: false
  - upstream-id: avx2
    supported-platforms:
    - architecture: x86_64
      operating_systems:
      - Linux
      - Darwin
      required_flags:
      - avx2
    common-crypto:
    - SHA3: liboqs
    no-secret-dependent-branching-claimed: true
    no-secret-dependent-branching-checked-by-valgrind: true
    large-stack-usage: false
- name: Falcon-1024
  claimed-nist-level: 5
  claimed-security: EUF-CMA
  length-public-key: 1793
  length-secret-key: 2305
  length-signature: 1330
  implementations-switch-on-runtime-cpu-features: true
  implementations:
  - upstream-id: clean
    supported-platforms: all
    common-crypto:
    - SHA3: liboqs
    no-secret-dependent-branching-claimed: true
    no-secret-dependent-branching-checked-by-valgrind: true
    large-stack-usage: false
  - upstream-id: avx2
    supported-platforms:
    - architecture: x86_64
      operating_systems:
      - Linux
      - Darwin
      required_flags:
      - avx2
    common-crypto:
    - SHA3: liboqs
    no-secret-dependent-branching-claimed: true
    no-secret-dependent-branching-checked-by-valgrind: true
    large-stack-usage: false