name: HQC
type: kem
principal-submitters:
- Carlos Aguilar Melchor
- Nicolas Aragon
- Slim Bettaieb
- Olivier Blazy
- Jurjen Bos
- Jean-Christophe Deneuville
- Philippe Gaborit
- Edoardo Persichetti
- Jean-Marc Robert
- Pascal Véron
- Gilles Zémor
- Loïc Bidoux
crypto-assumption: Syndrome decoding of structure codes (Hamming Quasi-Cyclic)
website: https://pqc-hqc.org/
nist-round: 3
spec-version: NIST Round 3 submission
upstream-ancestors:
- https://github.com/jschanck/package-pqclean/tree/29f79e72/hqc
- submission 2020-10-01 at https://pqc-hqc.org/implementation.html
parameter-sets:
- name: HQC-128
  claimed-nist-level: 1
  claimed-security: IND-CCA2
  length-public-key: 2249
  length-ciphertext: 4481
  length-secret-key: 2289
  length-shared-secret: 64
  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: primary-upstream
  - upstream-id: avx2
    supported-platforms:
    - architecture: x86_64
      operating_systems:
      - Linux
      - Darwin
      required_flags:
      - avx2
      - bmi1
      - pclmulqdq
    common-crypto:
    - SHA3: liboqs
    no-secret-dependent-branching-claimed: false
    no-secret-dependent-branching-checked-by-valgrind: true
    large-stack-usage: false
    upstream: primary-upstream
- name: HQC-192
  claimed-nist-level: 3
  claimed-security: IND-CCA2
  length-ciphertext: 9026
  length-public-key: 4522
  length-secret-key: 4562
  length-shared-secret: 64
  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: primary-upstream
  - upstream-id: avx2
    supported-platforms:
    - architecture: x86_64
      operating_systems:
      - Linux
      - Darwin
      required_flags:
      - avx2
      - bmi1
      - pclmulqdq
    common-crypto:
    - SHA3: liboqs
    no-secret-dependent-branching-claimed: false
    no-secret-dependent-branching-checked-by-valgrind: true
    large-stack-usage: false
    upstream: primary-upstream
- name: HQC-256
  claimed-nist-level: 5
  claimed-security: IND-CCA2
  length-ciphertext: 14469
  length-public-key: 7245
  length-secret-key: 7285
  length-shared-secret: 64
  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: primary-upstream
  - upstream-id: avx2
    supported-platforms:
    - architecture: x86_64
      operating_systems:
      - Linux
      - Darwin
      required_flags:
      - avx2
      - bmi1
      - pclmulqdq
    common-crypto:
    - SHA3: liboqs
    no-secret-dependent-branching-claimed: false
    no-secret-dependent-branching-checked-by-valgrind: true
    large-stack-usage: true
    upstream: primary-upstream
primary-upstream:
  spdx-license-identifier: Public domain
  source: https://github.com/PQClean/PQClean/commit/6a32796212b79a5f9126d0a933e1216313f50c16