Leth(x)be acollision resistanthash function. Define another hash functionh′(x)ash′(x)={0l,...
Digital signatures out of second- preimage resistant hash functions. In 2nd International Workshop on Post-Quantum Cryptography (PQCrypto), volume 5299 of Lecture Notes in Computer Science, pages 109-123, 2008.Dahmen, E., Okeya, K., Takagi, T., Vuillaume, C.: Digital Signatures out of ...
但是实际上根据CRHF定义，如果一个函数是抗碰撞的，指的是任何多项式时间敌手，不能在多项式时间内，以不可忽略概率找到x1≠x2，且h(x1)=h(x2)，这样即为collision resistant。这代表可能存在不同输入但是对应相同输出，只要无法在多项式时间内以不可忽略概率找到即可满足条件。对于h'(x)，如果仅仅存在一组碰撞值...
Digital Signatures Out of Second-Preimage Resistant Hash Functions Erik Dahmen, Katsuyuki Okeya, Tsuyoshi Takagi, Camille Vuillaume Pages 109-123 Cryptanalysis of Rational Multivariate Public Key Cryptosystems Jintai Ding, John Wagner Pages 124-136 Syndrome Based Collision Resistant Hashing Matthie...