A Novel Blind Signature Scheme Based on Nyberg-Rueppel Signature Scheme and Applying in Off-Line Digital Cash

In this paper, a novel Blind Signature Scheme (BSS) based on Nyberg-Rueppel Signature Scheme (NRSS) using Elliptic Curve Discrete Logarithm Problem (ECDLP) has been proposed. Blind signature allows a requester to obtain signature from a signer on any document, in such a way that the authority learns nothing about the message that is being signed. Blind Signatures are useful in protocols that guarantee the anonymity of the participants. As an instance, the application of the scheme in off line digital cash has been described. The proposed scheme can be easily extended to E-voting and others applications where the requester needs a blind signature on the message.