CSI-Otter:基于异构的 (部分) 盲签名,来自类团体诉讼,具有扭曲的扭曲
Shuichi Katsumata1,2, Yi-Fu Lai3,4, Jason T LeGrow5
1PQShield, Ltd., 267 Banbury Road, Oxford, OX2 7HQ UK.
概括
研究人员开发了第一个可证明安全的基于异构的盲人签名方案. 这种新的加密工具提供了最小的可证实的安全后量子盲签名,增强了在线安全.
科学领域:
- 密码学 密码学 密码学 密码学
- 后量子密码学 后量子密码学
- 数学理论 数学理论
背景情况:
- 盲签名对于数字交易中的隐私至关重要.
- 现有的盲签方案往往缺乏后量子安全性或具有较大的密钥/签名大小.
- 基于异构的加密技术为后量子安全提供了一个有希望的替代方案.
研究的目的:
- 构建第一个可证明安全的基于异构的盲签名方案.
- 与现有的后量子方案相比,实现更小的签名和公共密钥大小.
- 探索新的技术,以提高盲目签名的安全性和效率.
主要方法:
- 开发一种基于圆曲线的异构和二次曲线的新型盲签协议.
- 随机预言模型 (ROM) 中的可证明安全分析,在组动作反向问题的亚指数硬度假设下.
- 调查群动反向问题的环形变体,以优化签名大小.
主要成果:
- 介绍了第一个可证明安全的基于异构的盲签名方案.
- 该基本方案在使用CSIDH-512的可证明安全的后量子盲签名中实现了最小的公钥 (128B) 和签名 (8KB) 尺寸.
- 使用环组动作反向问题的变体将签名大小减少到4KB (使用512B公钥).
- 初步的加密分析表明,环形变体在某些参数上提供了与标准版本相比的安全性.
结论:
- 基于异构的加密技术可以有效地用于构建高效和安全的盲人签名方案.
- 拟议的方案在后量子盲签名技术方面取得了重大进展.
- 需要进一步的研究来开发基于异构的部分盲签名的哈希函数.
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