基于前向安全签名体制的研究及其应用

对前向安全签名体制进行了研究，提出了一种新的前向安全的签名算法。该算法能同
时满足签名密钥的更新与签名的前向安全，具备了更高的前向安全性.从而最大限度的减少了私钥泄漏所造成的危害。把该算法应用到交叉认证及电子商务等网上办公系统方面，不但可以提供更高的安全性，而且可以大大地提高办公系统的效率。
关键词 前向安全；交叉认证；电子商务

Research and Applications of Signature Cryptosystem based on the Forward-secure Digital Signature YUN Cui-lan1 CHENG Guo-sheng 1 LIU Yuan-hua 2 (1: Nanjing University of Information Science & Technology, Nanjing, 210044, china; 2: Xidian University, Xi’an, 710071, china) Abstract: A new forward-secure digital signature is proposed by researching on the forward-secure signature cryptosystem. It ensures that both the update of the signature’s secret key and the signature are secure, which has higher forward-secure. Thereby, the loss caused by leaking key is reduced to the minimum degree. Moreover, this algorithm is applied to the web office system such as cross authentication 、 E-commerce and so on. It not only can offer higher security but also largely improve the efficiency of the office system.
Key words: forward-secure; cross authentication；E-commerce