One-Off Blind Public Key Based on ID
Qiu Yu Zhang · Dianzi xuebao · 2003
The anonymity of blind signatures can protect individual privacy,and gives the criminal a chance.For resolving this problem,some schemes make use of the public key and the private key issued by CA,but the consumer′s actions can be connected by the consumer′s public key and certificate.For avoiding this connection,a new simple scheme based on RSA and Fiat Shamir Identification scheme is introduced.It only needs CA issuing the private key one time for the consumer,and the consumer can generate his different public keys each time he uses it.So this scheme can ensure the disconnection among the consumer′s actions.And CA can reveal the consumer′s identity under the court ′s grant to prevent the consumer committing.