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zeekay
4be24bf983
Ported changes from taurusgroup/multi-party-sig upstream:
1. Security fix: Increased ZKModIterations from 12 to 128
- Improves security of Paillier-Blum modulus validation
- Aligns with theoretical statistical security parameter requirements
2. Extended OT monochrome check improvement (based on paper revision)
- Added doubleFieldElement type for proper GF(2^k) multiplication
- New helper functions: randFe, pluckColumnToFieldElement,
pluckBitsToFieldElements, transposeToFieldSizeElements, adjustBatchSize
- Improved constant-time equality check
- Better batch size padding for security
3. Comment/typo fixes from upstream
Adapted to local naming conventions (Delta vs _Delta, _KDelta vs _K_Delta)
while preserving the security improvements from the upstream implementation.
Reference: https://eprint.iacr.org/2015/546