| # FrodoKEM |
| |
| - **Algorithm type**: Key encapsulation mechanism. |
| - **Main cryptographic assumption**: learning with errors (LWE). |
| - **Principal submitters**: 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/ |
| - **Specification version**: NIST Round 3 submission. |
| - **Primary Source**<a name="primary-source"></a>: |
| - **Source**: https://github.com/microsoft/PQCrypto-LWEKE/commit/b6609d30a9982318d7f2937aa3c7b92147b917a2 |
| - **Implementation license (SPDX-Identifier)**: MIT |
| |
| |
| ## 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) | |
| |:-------------------:|:----------------------|:-----------------|---------------------:|--------------------------:|--------------------------:|--------------------------:|-----------------------------:| |
| | FrodoKEM-640-AES | NA | IND-CCA2 | 1 | 9616 | 19888 | 9720 | 16 | |
| | FrodoKEM-640-SHAKE | NA | IND-CCA2 | 1 | 9616 | 19888 | 9720 | 16 | |
| | FrodoKEM-976-AES | NA | IND-CCA2 | 3 | 15632 | 31296 | 15744 | 24 | |
| | FrodoKEM-976-SHAKE | NA | IND-CCA2 | 3 | 15632 | 31296 | 15744 | 24 | |
| | FrodoKEM-1344-AES | NA | IND-CCA2 | 5 | 21520 | 43088 | 21632 | 32 | |
| | FrodoKEM-1344-SHAKE | NA | IND-CCA2 | 5 | 21520 | 43088 | 21632 | 32 | |
| |
| ## FrodoKEM-640-AES 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) | master | All | All | None | True | True | False | |
| | [Primary Source](#primary-source) | master | x86\_64 | Linux,Darwin,Windows | AVX2 | True | 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. |
| |
| ## FrodoKEM-640-SHAKE 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) | master | All | All | None | True | True | False | |
| | [Primary Source](#primary-source) | master | x86\_64 | Linux,Darwin,Windows | AVX2 | True | True | False | |
| |
| Are implementations chosen based on runtime CPU feature detection? **Yes**. |
| |
| ## FrodoKEM-976-AES 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) | master | All | All | None | True | True | False | |
| | [Primary Source](#primary-source) | master | x86\_64 | Linux,Darwin,Windows | AVX2 | True | True | False | |
| |
| Are implementations chosen based on runtime CPU feature detection? **Yes**. |
| |
| ## FrodoKEM-976-SHAKE 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) | master | All | All | None | True | True | False | |
| | [Primary Source](#primary-source) | master | x86\_64 | Linux,Darwin,Windows | AVX2 | True | True | False | |
| |
| Are implementations chosen based on runtime CPU feature detection? **Yes**. |
| |
| ## FrodoKEM-1344-AES 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) | master | All | All | None | True | True | False | |
| | [Primary Source](#primary-source) | master | x86\_64 | Linux,Darwin,Windows | AVX2 | True | True | False | |
| |
| Are implementations chosen based on runtime CPU feature detection? **Yes**. |
| |
| ## FrodoKEM-1344-SHAKE 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) | master | All | All | None | True | True | False | |
| | [Primary Source](#primary-source) | master | x86\_64 | Linux,Darwin,Windows | AVX2 | True | 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. |
