# SABER

- **Algorithm type**: key encapsulation mechanism
- **Main cryptographic assumption**: module learning with rounding
- **Scheme authors**: Jan-Pieter D'Anvers, Angshuman Karmakar, Sujoy Sinha Roy, Frederic Vercauteren
- **Authors' website**: https://www.esat.kuleuven.be/cosic/pqcrypto/saber/
- **Version**: NIST Round 3 submission

## Implementation

- **Source of implementation**: https://github.com/KULeuven-COSIC/SABER/tree/509cc5ec3a7e12a751ccdd2ef5bd6e54e00bd350 via https://github.com/jschanck/package-pqclean/tree/1ae84c3c/saber
- **Implementation version**: https://github.com/PQClean/PQClean.git, master, 865f0bd1d1dceb6624fc27e6395b14d2d03261ad
- **License**: Public domain
- **Constant-time**: Yes
- **Optimizations**: Portable C with AVX2 instructions (if available at run-time)

## Parameter sets

| Parameter set  | Security model | Claimed NIST security 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                         |