A BLIND SIGNATURE BASED ON DISCRETE LOGARITHM PROBLEM

The concept of a blind signature scheme deals with the request that the signer should sign on a blind message. The characteristic of blind signatures is that the requester enables to derive the signature but the signer disables to link a pair of signatures when the requester releases the signature pair in public. This study proposes a new blind signature scheme based on the discrete logarithm problem and the generalized ElGamal-type digital signature scheme by Harn. With high security, the proposed blind signature scheme meets the requirements like correctness, blindness, unforgeability and untraceability.