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https://github.com/open-quantum-safe/liboqs/blob/main/docs/algorithms/sig/falcon.md states **license CC0-1.0** But the license in the header file at https://falcon-sign.info/impl/falcon.h.html is ** license MIT** , the same at https://github.com/PQClean/PQClean/blob/master/crypto_sign/falcon-1024/clean/LICENSE
44 lines
3.6 KiB
Markdown
44 lines
3.6 KiB
Markdown
# Falcon
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- **Algorithm type**: Digital signature scheme.
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- **Main cryptographic assumption**: hardness of NTRU lattice problems.
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- **Principal submitters**: Thomas Prest.
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- **Auxiliary submitters**: Pierre-Alain Fouque, Jeffrey Hoffstein, Paul Kirchner, Vadim Lyubashevsky, Thomas Pornin, Thomas Ricosset, Gregor Seiler, William Whyte, Zhenfei Zhang.
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- **Authors' website**: https://falcon-sign.info
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- **Specification version**: v1.2.
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- **Implementation source**: https://github.com/PQClean/PQClean/commit/6a32796212b79a5f9126d0a933e1216313f50c16, which takes it from:
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- https://github.com/jschanck/package-pqclean/tree/cea1fa5a/falcon, which takes it from:
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- supercop-20201018
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- **Implementation license (SPDX-Identifier)**: MIT.
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## Parameter set summary
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| Parameter set | Security model | Claimed NIST Level | Public key size (bytes) | Secret key size (bytes) | Signature size (bytes) |
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|:---------------:|:-----------------|---------------------:|--------------------------:|--------------------------:|-------------------------:|
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| Falcon-512 | EUF-CMA | 1 | 897 | 1281 | 690 |
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| Falcon-1024 | EUF-CMA | 5 | 1793 | 2305 | 1330 |
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## Falcon-512 implementation characteristics
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| 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?‡ |
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|:------------------------:|:----------------------------|:--------------------------------|:------------------------|:-----------------------------------|:-----------------------------------------------|:----------------------|
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| clean | All | All | None | True | True | False |
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| avx2 | x86\_64 | Linux,Darwin | AVX2 | True | True | False |
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Are implementations chosen based on runtime CPU feature detection? **Yes**.
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‡For an explanation of what this denotes, consult the [Explanation of Terms](#explanation-of-terms) section at the end of this file.
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## Falcon-1024 implementation characteristics
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| 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? |
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|:------------------------:|:----------------------------|:--------------------------------|:------------------------|:-----------------------------------|:-----------------------------------------------|:---------------------|
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| clean | All | All | None | True | True | False |
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| avx2 | x86\_64 | Linux,Darwin | AVX2 | True | True | False |
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Are implementations chosen based on runtime CPU feature detection? **Yes**.
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## Explanation of Terms
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- **Large Stack Usage**: Implementations identified as having such may cause failures when running in threads or in constrained environments.
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