Structured Proxy Multi-Signature Scheme with Fingerprint

Fingerprint has usually been used in internet transactions in order to resist illegal access to the user's private key and the fingerprint techniques have wildly applications in many fields. Our proposed structured proxy multi-signature scheme takes into account signing order of the entities of the signing group and using the fingerprint techniques to generate the private key. We set up a fingerprint template for everyone join in the scheme and for some particular conditions, we use encode methods to verify the consistency of fingerprints. The unique of the fingerprint satisfies the requirement of the unique of the private key. Except for the ordinary signature validity verification, we add the fingerprint verification to strengthen the security of our scheme. Through the analysis of our proposed scheme, we show that our scheme is more secure than the ordinary one.