摘要
目前,前向安全签名体制在密码技术研究中备受关注并获得了深入的研究。过去提出的大多数方案中密钥更新与总时间段T指数或者对数相关。在T相对较大时,这无疑对算法的执行效率造成很大的影响。该文提出了一个新的基于强RSA假定的前向安全数字签名方案,该方案存储空间需求和算法执行效率均独立于总时间段T,并且通过引入预计算,本方案具有效率高,实用性好的特点。
Recently, forward security has received a significant attention and has been extensively researched in the cryptographic community. Most methods which was proposed need exponent or log to time periods T in secret key updating phrase. When T is a large number, the executing efficiency will be affected deeply. In this paper, a new forward-secure signature based on strong RSA assumption is proposed. In which, both storage requirements and executing times are independent of time periods T. And using pre-computing, the protocol is quite more efficient.
出处
《计算机工程》
EI
CAS
CSCD
北大核心
2005年第9期64-66,共3页
Computer Engineering
基金
国家自然科学基金资助项目(60072018)
国家杰出青年科学基金资助项目(60225007)
关键词
前向安全
数字签名
强RSA假定
Forward-secure
Digital signature
Strong RSA assumption
