摘要： 综合自认证公钥体制和签密思想，使用双线性对提出一个安全高效的自认证签密方案。能既保密又认证地传输消息，有效防止可信机构冒充用户。验证者可以同时对消息的签密和相关证书进行验证。与已有方案相比，该方案具有计算量小、通信成本低、效率高等优点，在电子商务等领域的应用中具有较高的实用价值。

关键词: 自认证公钥, 签密, 双线性对

Abstract: By integrating the concepts of self-certified public key and signcryption, a secure and efficient self-certified signcryption scheme from bilinear pairings is proposed. It can guarantee the confidentiality and authenticity when the message is transmitted and prevent certificate authority to personate the user. The verifier can verify the authenticity of public key and validate signcryption simultaneously. The scheme is more efficient than the existing ones in terms of communication overheads and computation cost. It have more practical value in applications of E-commerce and other fields.

Key words: self-certified public key, signcryption, bilinear pairings

中图分类号: 

• TP309