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34 lines
2.8 KiB
Markdown
34 lines
2.8 KiB
Markdown
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# NTRU-Prime
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- **Algorithm type**: Key encapsulation mechanism.
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- **Main cryptographic assumption**: NTRU.
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- **Principal submitters**: Daniel J. Bernstein, Billy Bob Brumley, Ming-Shing Chen, Chitchanok Chuengsatiansup, Tanja Lange, Adrian Marotzke, Bo-Yuan Peng, Nicola Tuveri, Christine van Vredendaal, Bo-Yin Yang.
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- **Authors' website**: https://ntruprime.cr.yp.to
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- **Specification version**: supercop-20200826.
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- **Primary Source**<a name="primary-source"></a>:
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- **Source**: https://github.com/PQClean/PQClean/commit/4c9e5a3aa715cc8d1d0e377e4e6e682ebd7602d6
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- **Implementation license (SPDX-Identifier)**: Public domain
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- **Ancestors of primary source**:
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- https://github.com/jschanck/package-pqclean/tree/4d9f08c3/ntruprime, which takes it from:
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- supercop-20210604
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## Parameter set summary
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| Parameter set | Parameter set alias | Security model | Claimed NIST Level | Public key size (bytes) | Secret key size (bytes) | Ciphertext size (bytes) | Shared secret size (bytes) |
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|:---------------:|:----------------------|:-----------------|---------------------:|--------------------------:|--------------------------:|--------------------------:|-----------------------------:|
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| sntrup761 | NA | IND-CCA2 | 2 | 1158 | 1763 | 1039 | 32 |
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## sntrup761 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 | Linux,Darwin | AVX2 | False | 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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## 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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