A New Chain Verification Signature Scheme

With the development of computer and network technology, digital signature techniques are being expanded greatly, from single signature and single verification techniques to multisignature ones. This paper presents a new chain verification signature scheme, which does not grant verifier P_n to verify the validity of the signature until being authorized by members P₁, P₂,......,P_n-1 of the chain verification authority group. Besides the ordinary properties of chain verification signature, the proposed scheme can easily add or delete authorizers of chain verification. Furthermore, the scheme can be protected in time when sub-secrets were leaked by verifiers or authorizers. In addition, the security and efficiency of the proposed scheme was analyzed.