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36 lines
2.2 KiB
Markdown
36 lines
2.2 KiB
Markdown
liboqs algorithm datasheet: `kem_threebears`
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============================================
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Summary
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-------
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- **Name**: ThreeBears
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- **Algorithm type**: key encapsulation mechanism
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- **Main cryptographic assumption**: integer module learning with errors (I-MLWE)
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- **Scheme authors**: Mike Hamburg
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- **Authors' website**: https://sourceforge.net/projects/threebears/
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- **Added to liboqs by**: Douglas Stebila
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- **NIST Round 2 submission**
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Parameter sets
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--------------
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| Parameter set | Security model | Claimed NIST security level | Public key size (bytes) | Secret key size (bytes) | Ciphertext size (bytes) | Shared secret size (bytes) |
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|---------------|:--------------:|:---------------------------:|:-----------------------:|:-----------------------:|:-----------------------:|:--------------------------:|
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| BabyBearEphem | IND-CPA | 1 | 804 | 40 | 917 | 32 |
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| BabyBear | IND-CCA | 1 | 804 | 40 | 917 | 32 |
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| MamaBearEphem | IND-CPA | 3 | 1194 | 40 | 1307 | 32 |
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| MamaBear | IND-CCA | 3 | 1194 | 40 | 1307 | 32 |
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| PapaBearEphem | IND-CPA | 5 | 1584 | 40 | 1697 | 32 |
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| PapaBear | IND-CCA | 5 | 1584 | 40 | 1697 | 32 |
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Implementation
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--------------
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- **Source of implementation:** https://sourceforge.net/p/threebears/code/ci/f4ce0ebfc84a5e01a75bfc8297b6d175e993cfa4/
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- **Implementation version:** https://github.com/PQClean/PQClean/commit/9023fef55861faccd82146cf599b9e46fb9606aa
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- **License:** MIT License
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- **Language:** C
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- **Constant-time:** Yes
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- **Architectures supported in liboqs master branch**: x86, x64
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