本文将自认证签密的概念引入到多代理签名中，构造了一种新的无可信中心的自认证多代理签密方案，其安全性依赖于有限域上离散对数问题的难解性。新方案不仅具有自认证签密的优点，而且原始签密人授权给一组代理签密人，授权代理签密组的所有成员一起可以代替原始签密人行使签密权。所提方案算法复杂度低、通信效率高，是一个安全实用的多代理签密方案。

By applying the concept of selfcertified signcryption to multiproxy signature,a new selfcertified multiproxy signcryption scheme without trustworthy system authority is constructed, and its security relies on the hardness of discrete logarithm problems in the finite field. The new scheme has the merits of selfcertified signcryption; moreover, an original signcryter can authorize a group of proxy signcrypters, and the multiproxy signcryption is generated by the cooperation of all the proxy signcrypters. The constructed algorithm is a secure and practical multiproxy signcryption scheme which has lower computation complexity and higher communication efficiency.