liboqs/docs/algorithms/kem/frodokem.md
2020-06-02 13:18:19 -04:00

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FrodoKEM
========
- **Algorithm type**: key encapsulation mechanism
- **Main cryptographic assumption**: learning with errors (LWE)
- **Scheme authors**: Michael Naehrig, Erdem Alkim, Joppe Bos, Léo Ducas, Karen Easterbrook, Brian LaMacchia, Patrick Longa, Ilya Mironov, Valeria Nikolaenko, Christopher Peikert, Ananth Raghunathan, Douglas Stebila
- **Authors' website**: https://frodokem.org/
- **Version**: NIST Round 2 submission
Implementation
--------------
- **Source of implementation**: https://github.com/Microsoft/PQCrypto-LWEKE
- **Implementation version**: https://github.com/Microsoft/PQCrypto-LWEKE/commit/d5bbd0417ba111b08a959c0042a1dcc65fb14a89
- **License**: MIT License
- **Constant-time**: Yes
- **Optimizations**: Portable C with optional use of AVX2 and AESNI instructions (selected at compile-time, enabled by default if available)
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) |
|---------------------|:--------------:|:---------------------------:|:-----------------------:|:-----------------------:|:-----------------------:|:--------------------------:|
| FrodoKEM-640-AES | IND-CCA | 1 | 9616 | 19888 | 9720 | 16 |
| FrodoKEM-640-SHAKE | IND-CCA | 1 | 9616 | 19888 | 9720 | 16 |
| FrodoKEM-976-AES | IND-CCA | 3 | 15632 | 31296 | 15744 | 24 |
| FrodoKEM-976-SHAKE | IND-CCA | 3 | 15632 | 31296 | 15744 | 24 |
| FrodoKEM-1344-AES | IND-CCA | 5 | 21520 | 43088 | 21632 | 32 |
| FrodoKEM-1344-SHAKE | IND-CCA | 5 | 21520 | 43088 | 21632 | 32 |