Security Analysis of a Zero-knowledge Proof Scheme Possessing a RSA digital Signature
Wei Wei · 2007
WANG et al.recently proposed two zero-knowledge proof schemes of possessing a RSA digital signature.These schemes give a new method of preventing arbitrary propagation of digital signature.However,the security of the first WANG et al.'s schemes is not as secure as they have claimed.In the random oracle model,a prover without a RSA digital signature could cheat a verifier when the public key is small.