SABER
- Algorithm type: Key encapsulation mechanism.
- Main cryptographic assumption: Module learning with rounding.
- Principal submitters: Jan-Pieter D’Anvers, Angshuman Karmakar, Sujoy Sinha Roy, Frederik Vercauteren.
- Authors’ website: https://www.esat.kuleuven.be/cosic/pqcrypto/saber/
- Specification version: NIST Round 3 submission.
- Implementation source: https://github.com/PQClean/PQClean/commit/6c1ea921ee4a06a6b50c742ca540bb9b5e51aee2, which takes it from:
- https://github.com/jschanck/package-pqclean/tree/1ae84c3c/saber, which takes it from:
- https://github.com/KULeuven-COSIC/SABER/tree/509cc5ec3a7e12a751ccdd2ef5bd6e54e00bd350
- Implementation license (SPDX-Identifier): Public domain.
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) |
|---|---|---|---|---|---|---|
| LightSaber-KEM | IND-CCA2 | 1 | 672 | 1568 | 736 | 32 |
| Saber-KEM | IND-CCA2 | 3 | 992 | 2304 | 1088 | 32 |
| FireSaber-KEM | IND-CCA2 | 5 | 1312 | 3040 | 1472 | 32 |
LightSaber-KEM implementation characteristics
| 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?‡ |
|---|---|---|---|---|---|---|
| clean | All | All | None | True | True | False |
| 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 section at the end of this file.
Saber-KEM implementation characteristics
| 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? |
|---|---|---|---|---|---|---|
| clean | All | All | None | True | True | False |
| avx2 | x86_64 | Linux,Darwin | AVX2 | False | True | False |
Are implementations chosen based on runtime CPU feature detection? Yes.
FireSaber-KEM implementation characteristics
| 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? |
|---|---|---|---|---|---|---|
| clean | All | All | None | True | True | False |
| avx2 | x86_64 | Linux,Darwin | AVX2 | False | True | False |
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.