liboqs/docs/algorithms/kem/ntruprime.md
Rodrigo Martín c62031ee75
Include DeriveEncapsulation functionality (Issue #2135) (#2221)
* Include 'encaps_derand' functionality

Signed-off-by: RodriM11 <62776780+RodriM11@users.noreply.github.com>

* Add changes pertaining to upstream copy

Signed-off-by: RodriM11 <62776780+RodriM11@users.noreply.github.com>

* Add co-author

Co-authored-by: Spencer Wilson <spencer.wilson@uwaterloo.ca>
Signed-off-by: RodriM11 <62776780+RodriM11@users.noreply.github.com>

* Fix formatting

Signed-off-by: Douglas Stebila <dstebila@uwaterloo.ca>

* Modify 'vectors_kem.c' to employ '_derand' API

Signed-off-by: Rodrigo Martin Sánchez-Ledesma <rmsanchezledesma@indra.es>

---------

Signed-off-by: RodriM11 <62776780+RodriM11@users.noreply.github.com>
Signed-off-by: Douglas Stebila <dstebila@uwaterloo.ca>
Signed-off-by: Rodrigo Martin Sánchez-Ledesma <rmsanchezledesma@indra.es>
Co-authored-by: Spencer Wilson <spencer.wilson@uwaterloo.ca>
Co-authored-by: Douglas Stebila <dstebila@uwaterloo.ca>
Co-authored-by: Rodrigo Martin Sánchez-Ledesma <rmsanchezledesma@indra.es>
2025-08-27 10:05:41 -04:00

34 lines
3.0 KiB
Markdown

# NTRU-Prime
- **Algorithm type**: Key encapsulation mechanism.
- **Main cryptographic assumption**: NTRU.
- **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.
- **Authors' website**: https://ntruprime.cr.yp.to
- **Specification version**: supercop-20200826.
- **Primary Source**<a name="primary-source"></a>:
- **Source**: https://github.com/PQClean/PQClean/commit/4c9e5a3aa715cc8d1d0e377e4e6e682ebd7602d6
- **Implementation license (SPDX-Identifier)**: Public domain
- **Ancestors of primary source**:
- https://github.com/jschanck/package-pqclean/tree/4d9f08c3/ntruprime, which takes it from:
- supercop-20210604
## Parameter set summary
| 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) | Keypair seed size (bytes) | Encapsulation seed size (bytes) |
|:---------------:|:----------------------|:-----------------|---------------------:|--------------------------:|--------------------------:|--------------------------:|-----------------------------:|:----------------------------|:----------------------------------|
| sntrup761 | NA | IND-CCA2 | 2 | 1158 | 1763 | 1039 | 32 | NA | NA |
## sntrup761 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 | 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.
## Explanation of Terms
- **Large Stack Usage**: Implementations identified as having such may cause failures when running in threads or in constrained environments.