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* Switch to new PQClean commit for SPHINCS+ and remove old patch file * Improve "compilability" on Apple M1 (ARM) (#1421) * correct ARM SHA3 extension addition * correct compile option for ARM SHA * correct SHA3 enablement * Remove SPHINCS+ robust and Haraka variants * Fix SHA2 block sizes in OpenSSL wrapper * enable Keccak for Sphincs even if OpenSSL shall provide SHA3 * properly handle xkcp enablement if only specific algorithms are selected * correct conditional setting * re-enable XKCP for other platforms * Windows support * alternate pqcrystals-AES removal --------- Co-authored-by: Michael Baentsch <57787676+baentsch@users.noreply.github.com>
43 lines
3.8 KiB
Markdown
43 lines
3.8 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 Prest, Thomas Ricosset, Gregor Seiler, William Whyte, Zhenfei Zhang.
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- **Authors' website**: https://falcon-sign.info
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- **Specification version**: 20211101.
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- **Primary Source**<a name="primary-source"></a>:
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- **Source**: https://github.com/PQClean/PQClean/commit/c1b19a865de329e87e9b3e9152362fcb709da8ab
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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 | 666 |
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| Falcon-1024 | EUF-CMA | 5 | 1793 | 2305 | 1280 |
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## Falcon-512 implementation characteristics
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| 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?‡ |
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|:---------------------------------:|:-------------------------|:----------------------------|:--------------------------------|:------------------------|:-----------------------------------|:-----------------------------------------------|:----------------------|
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| [Primary Source](#primary-source) | clean | All | All | None | True | True | False |
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| [Primary Source](#primary-source) | avx2 | x86\_64 | All | 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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| 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? |
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|:---------------------------------:|:-------------------------|:----------------------------|:--------------------------------|:------------------------|:-----------------------------------|:-----------------------------------------------|:---------------------|
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| [Primary Source](#primary-source) | clean | All | All | None | True | True | False |
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| [Primary Source](#primary-source) | avx2 | x86\_64 | All | 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. |