TY - INPR A1 - Schnorr, Claus Peter A1 - Ong, Heidrun T1 - Fast signature generation with a fiat shamir-like scheme N2 - We propose two improvements to the Fiat Shamir authentication and signature scheme. We reduce the communication of the Fiat Shamir authentication scheme to a single round while preserving the e±ciency of the scheme. This also reduces the length of Fiat Shamir signatures. Using secret keys consisting of small integers we reduce the time for signature generation by a factor 3 to 4. We propose a variation of our scheme using class groups that may be secure even if factoring large integers becomes easy. Y1 - 2005 UR - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/4257 UR - https://nbn-resolving.org/urn:nbn:de:hebis:30-12271 UR - http://www.mi.informatik.uni-frankfurt.de/research/papers.html N1 - Preprint, später in: Advances in Cryptology - Eurocrypt '90 Lecture Notes in Computer Science, Vol.473, Springer Verlag, 1991, S. 432-440 ER -