基于身份的多接收者的代理签密方案

利用双线性对提出一种基于身份的多接收者的代理签密方案，为电子政务和电子商务中具有多名合法接收者的签密问题提供了解决途径.此方案既保持了基于身份加密的优点，又具有可公开验证性和签名多向性，只有签密者认为合法的多名接收者才能各自独立从签密文中恢复消息，且安全性好.该方案具有很高的执行效率，签密过程只需1次双线性对运算，接收者人数越多，其效率的优势会越加明显.

Multi-receiver identity-based proxy signcryption (Chinese)

Based on the identity-based signcryption, this paper proposed a multi-receiver identity-based proxy signcryption scheme, in which some good characteristics of bilinear pairing are used. The new scheme offers a good solution to the problem of signature with a lot of multi-receiver. Additionally, this scheme which can achieve confidentiality, public verification and high security, was simply designed and easily implemented. Only one pairing computation is needed in it to signcrypt a single message for all receivers. As a result, the efficiency gain of the new scheme is huge especially when there are a large number of recipients.