面向网络化制造环境的多功能门限数字签名

Threshold signature scheme with multifunction in networked manufacturing environment

为了保证网络化制造环境中信息交换的基本安全需求,提出一个全新的多功能门限数字签名方案。该方案通过结合门限、信息隐藏和指定验证者三种方法,使其不但具有门限签名的功能,可以满足特殊情况下的多人签名,而且能够隐藏信息、指定信息恢复者和签名验证者,实现以多用户协作的方式对共享信息的真实性和来源进行认证。在随机预言模型下,证明了方案的安全性,并给出严谨的数学推导和安全强度下限。最后,通过与相关方法的对比,说明了该方案的有效性。

To satisfy essential security requirement for information exchange in networked manufacturing environment, a new signature scheme with more functions was proposed. By combining threshold,message hiding and verifier designation, the new scheme not only had the fuction of threshold signature and realizing multi-person＇ signing of the document, but also had the function of hiding message and designating message recuperator and verifier. This new scheme could be used to guarantee the authenticity and origin of sharing information by multi-user cooperation. The security of this scheme was proved under the random oracle model, and religious mathematic deduction as well as the lower limit of security was presented. Finally, by comparing with similar scheme, the feasibility and efficiency of new signature scheme was illustrated.