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零知识证明 前沿热点追踪 🎯
Fri 星期五
01.30
2026
Re2creds: Reusable Anonymous Credentials from Malleable NIZK and Legacy Signatures https://eprint.iacr.org/2026/119
Xie et al. proposed Re2creds, an anonymous credential system in their paper, reducing computational costs via reusable presentations and supporting legacy signatures for improved practicality. Xie等人在论文中提出了Re2creds匿名凭证系统，通过可重用演示和证明组合机制，显著降低计算成本并兼容传统签名，提升了实用性和效率。
Notes
- Re2creds introduces reusable credential presentations, cutting computational costs across sessions.
- Proof combination moves intensive crypto ops outside circuits, enabling legacy signature support.
- Compatible with NIST-recommended curves, removing adoption barriers.
- Experimental results show >50% reduction in credential generation time vs. existing schemes.
- BLS signature presentation on BN254 takes <1s, demonstrating high efficiency.
- Security proven via refined UC ideal functionality with rigorous proofs.