Research and Design of an Improved ElGamal Digital Signature Scheme
Hui Zhang · Computer Engineering and Science · 2009
The ElGamal public-key cryptosystem is an international public-key cryptosystem ,and also a more effective and secure alogorithm used for secret communication networks and digital signature.It is the foundation of many special-purpose digital signatures.But the ElGamal digital signature algorithm has a security flaw that random numbers cannot repeatedly use. The thesis puts forward an improved method aimed at this security flaw,and makes a security analysis of the improved algorithm ,and proves its correctness both in theory and practice.