基于格的电子现金支付方案

A lattice-based E-cash scheme

由于现有的基于数论假设的加密算法均可在多项式时间内得到破解,因此基于数论假设的盲签名方案在量子环境下将不再安全.为此,将基于格上设计的盲签名应用到电子现金支付中,可以使其在量子计算机时代依然安全而且计算效率较高.

Due to the existing encryption algorithm based on number theory assumptions gets cracking in polynomial time, so the blind signature scheme based on the number theory of assumptions in quantum environment will no longer be safe. This paper applies the blind signature based on lattice to the electronic cash. Results show that in the age of quantum computer the scheme still has high security and computational efficiency.