The Safety Analysis of ElGamal Digital Signature System
Jian Wan · Journal of Hangzhou Dianzi University · 2007
In this paper,various attack methods to ElGamal are analyzed and studied.Based on the studies,three kinds of attack methods are summarized: wholly attack,by which signer's keys are ciphered out;arbitrary attack,by which valid signature are forged for arbitary messages;by constructing special parameter,some valid signature are forged for special messages.According to the safety analysis of ElGamal digital signature system,fundamentals and methods for selecting parameters are summed up in establishing instances of ElGamal signature system.