Research on Strongly Unforgeable Ring Signature Scheme Based on ID
Gang Zeng · IOSR Journal of Computer Engineering · 2014
A ring signature system is strongly unforgeable if the ring signature is existential unforgeable and, given ring signatures on some message m, the adversary can not produce a new ring signature on m.Strongly unforgeable ring signatures are useful for constructing chosen-ciphertext secure cryptographic system.For example, it can be used to design the ring signcryptionscheme.In this paper, we analyse the safety of Au et al.'s ID-based ring signature scheme, then we construct a strongly unforgeable ID-based ring signature scheme in the standard model based on the standard discrete logarithm problem (DLP).