liboqs/docs/algorithms/sig_picnic.md
2019-08-29 19:56:46 -04:00

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liboqs algorithm datasheet: `sig_picnic`
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Summary
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- **Name**: Picnic
- **Algorithm type**: signature
- **Main cryptographic assumption**: hash function security (ROM/QROM), key recovery attacks on the lowMC block cipher
- **NIST submission URL**: https://csrc.nist.gov/CSRC/media/Projects/Post-Quantum-Cryptography/documents/round-2/submissions/Picnic-Round2.zip
- **Submitters (to NIST competition)**: Greg Zaverucha, Melissa Chase, David Derler, Steven Goldfeder, Claudio Orlandi, Sebastian Ramacher, Christian Rechberger, Daniel Slamanig, Jonathan Katz, Xiao Wang, Vladmir Kolesnikov
- **Submitters' website**: https://microsoft.github.io/Picnic/
- **Added to liboqs by**: Christian Paquin
Parameter sets
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| Parameter set | Security model | Claimed NIST security level | Public key size (bytes) | Secret key size (bytes) | Signature size (bytes) |
|-----------------|:--------------:|:---------------------------:|:-----------------------:|:-----------------------:|:----------------------:|
| picnic_L1_FS | EUF-CMA | 1 | 33 | 49 | 34036 |
| picnic_L1_UR | EUF-CMA | 1 | 33 | 49 | 53965 |
| picnic_L3_FS | EUF-CMA | 3 | 49 | 73 | 76776 |
| picnic_L3_UR | EUF-CMA | 3 | 49 | 73 | 121849 |
| picnic_L5_FS | EUF-CMA | 5 | 65 | 97 | 132860 |
| picnic_L5_UR | EUF-CMA | 5 | 65 | 97 | 209510 |
| picnic2_L1_FS | EUF-CMA | 1 | 33 | 49 | 13806 |
| picnic2_L3_FS | EUF-CMA | 3 | 49 | 73 | 29754 |
| picnic2_L5_FS | EUF-CMA | 5 | 65 | 97 | 54736 |
Implementation
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- **Source of implementation:** https://github.com/IAIK/Picnic
- **Implementation version:** https://github.com/IAIK/Picnic/tree/v2.1.1
- **License:** MIT License
- **Language:** C
- **Constant-time:** Yes
- **Architectures supported in liboqs master branch**: x86, x64
Additional comments
-------------------
The original Picnic implementation includes optimizations that are not currently being built in liboqs. See src/sig/picnic/upstream/README for details.