Secret transferring protocol with non-repudiation based on domain-verifiable signcryption
基于组可验证签密的非否认秘密传输协议

Signcryption provides confidentiality and authenticity efficiently, and it can be used to design compact communication protocol. This paper analyzed the domain-verifiable signcryption which Wang proposed, and pointed out the redundant data and computation in his scheme. This paper advanced Wang's scheme and designed a new domain-verifiable signcryption scheme. Based on the signcryption scheme, this paper proposed a new secret transferring protocol. The new scheme provides integrity of ciphertext and correctness of plaintext by 3 steps, and it keeps confidentiality, fairness and non-repudiation. Meanwhile, performance analysis shows that the new scheme is more efficient.