Security analysis of an intrusion-resilient signature scheme
Lei Wu · Journal of Guizhou Normal University · 2011
Key exposure seriously threatens the security of digital signatures.Intrusion-resilient signature is one kind of effective method of dealing with this problem.The security of an intrusion-resilient signature scheme proposed by Li Hongwei et al.is analyzed in this paper.Two attack algorithms are given.In the first attack algorithm,an adversary can forge the signature of any message in the same time period from another valid signature.In the second attack algorithm,an adversary can forge the signature of any message in any time period.Thus the scheme proposed by Li Hongwei is fully insecure.