关键词: 密码学, 认证, 多密钥协商, 签名方案, 已知密钥安全

Abstract: Multi-key agreement protocol can generate multi-keys in one session, so researchers are interested in it these days. In this paper, a new multi-key agreement protocol based on the traditional signature scheme was proposed. The new scheme realizes the hiding of the information between the participants and enhanced the security of our protocol by using Hash function. This paper discussed the security and computational cost of the new scheme. The result shows that the new protocol realizes the secure key agreement with lower computational cost.

Key words: Cryptography, Authentication, Multi-key agreement, Signature scheme, Known-key security