Blind Signature Scheme with Forward Security
Tang Lei · Journal of Xuzhou Normal University · 2007
Blind signature and forward security have become the hot points in the research of!cryptography.Blind signature plays an important role in protecting the senders' privacy.Forward security can effectively reduce the loss caused by exposure of secret keys.To a forward security signature scheme,even if the signature key of priod j is usurped,the usurper can only forge the valid signature after period j and the signature before period j is still secure.In this paper,the authors present a blind signature scheme with forward security based on ElGamal,which applied the characteristics of forward security to the blind signature scheme.Furthermore,the security of the proposed scheme is analyzed.