基于属性的密码体制中用户的多个属性由一个授权中心管理,这将会增大其工作负担,降低工作效率.本文设计了一个可证明安全的多授权中心的签名方案,将用户的多个属性由不同的授权中心分别管理,属性参数在全域范围选择.采用归约安全证明的研究方法证明此方案的安全性归约为计算Diffie-Hellman难题,方案具有存在性不可伪造和抗合谋攻击的特性. Attribute-based cryptography in the user’s multiple attributes by an authorized center management, which will increase its workload, reduce work efficiency.This paper designed a multi-authorized center to prove the security signature scheme, the user’s multiple Attributes are managed separately by different authorization centers, and the attribute parameters are selected in the global scope.Using the research methods of reduced security proofs, the security reduction of this scheme is proved to be the Diffie-Hellman problem, which has the existence of unforgeability and conspiracy attack characteristic.