Abstract:
Based on designated receiver signature scheme with message recovery, a new partially blind signature scheme is proposed with forward security property. In the new scheme, the communication cost is lower and it can avoid all the signatures become invalid because of the signature keys of signers are leaked. Moreover, only the designated receiver can recover the original message and can strength the security of the message. In the scheme the signature sponsor and the singer cooperate to sign, and the signature key is updated in every period, the information of receiver's who can recover the message is inserted in the signature process. An analysis of the security of the proposed scheme shows that it satisfies the partial blindness,forward security,unforgeability and so on.
