mirror of
https://github.com/open-quantum-safe/liboqs.git
synced 2025-12-24 00:04:05 -05:00
c5b8cfe478
* Solve '-Wstrict-prototypes' Manual changes are applied to the following algorithms only: * Bike * Frodo * Picnic * Add prototype for implementation of `OQS_SIG_alg_count` * Add prototype for implementation of `OQS_KEM_alg_count` * Run `copy_from_upstream.py` Now, the constructors have a full prototype. It compiles with clang 16.0
58 lines
5.7 KiB
Markdown
58 lines
5.7 KiB
Markdown
# HQC
|
|
|
|
- **Algorithm type**: Key encapsulation mechanism.
|
|
- **Main cryptographic assumption**: Syndrome decoding of structure codes (Hamming Quasi-Cyclic).
|
|
- **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.
|
|
- **Authors' website**: https://pqc-hqc.org/
|
|
- **Specification version**: NIST Round 3 submission.
|
|
- **Primary Source**<a name="primary-source"></a>:
|
|
- **Source**: https://github.com/PQClean/PQClean/commit/4c9e5a3aa715cc8d1d0e377e4e6e682ebd7602d6
|
|
- **Implementation license (SPDX-Identifier)**: Public domain
|
|
, which takes it from:
|
|
- https://github.com/jschanck/package-pqclean/tree/29f79e72/hqc, which takes it from:
|
|
- submission 2020-10-01 at https://pqc-hqc.org/implementation.html
|
|
|
|
## Security advisory
|
|
|
|
The implementation is [known to *not* provide constant time execution properties](https://github.com/open-quantum-safe/liboqs/issues/995).
|
|
|
|
## 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) |
|
|
|:---------------:|:-----------------|---------------------:|--------------------------:|--------------------------:|--------------------------:|-----------------------------:|
|
|
| HQC-128 | IND-CCA2 | 1 | 2249 | 2289 | 4481 | 64 |
|
|
| HQC-192 | IND-CCA2 | 3 | 4522 | 4562 | 9026 | 64 |
|
|
| HQC-256 | IND-CCA2 | 5 | 7245 | 7285 | 14469 | 64 |
|
|
|
|
## HQC-128 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](#primary-source) | clean | All | All | None | True | True | False |
|
|
| [Primary Source](#primary-source) | avx2 | x86\_64 | Linux,Darwin | AVX2,BMI1,PCLMULQDQ | False | True | False |
|
|
|
|
Are implementations chosen based on runtime CPU feature detection? **Yes**.
|
|
|
|
‡For an explanation of what this denotes, consult the [Explanation of Terms](#explanation-of-terms) section at the end of this file.
|
|
|
|
## HQC-192 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](#primary-source) | clean | All | All | None | True | True | False |
|
|
| [Primary Source](#primary-source) | avx2 | x86\_64 | Linux,Darwin | AVX2,BMI1,PCLMULQDQ | False | True | False |
|
|
|
|
Are implementations chosen based on runtime CPU feature detection? **Yes**.
|
|
|
|
## HQC-256 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](#primary-source) | clean | All | All | None | True | True | False |
|
|
| [Primary Source](#primary-source) | avx2 | x86\_64 | Linux,Darwin | AVX2,BMI1,PCLMULQDQ | False | True | True |
|
|
|
|
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. |