摘要
原有对称加密算法采用置换与替换技术。该文提出一种基于圆性质的对称密钥加密算法,采用随机数技术与密码学杂凑函数,使加密后的密文随机分布于n维几何空间,实现了抗密码分析攻击,而穷举攻击在计算上是不可行的。该算法适用于带时间戳加密、短明文加密等应用环境,实验结果验证了其可行性。
The former symmetric encryption algorithms use substitution and transposition techniques. Ibis paper presents a symmemc encryption algorithm based on circle property. The techniques of random number and cryptographic hash function are used in this algorithm. So the cipher text randomly distributes in the n-dimensional space and led to cryptanalysis being difficult. From the security analysis the brute-force attacks are infeasible. It is applicable for encryptions with timestamp and short plain text encryptions. Experimental results verify that this algorithm is feasible.
出处
《计算机工程》
CAS
CSCD
北大核心
2009年第4期180-182,共3页
Computer Engineering
基金
国家自然科学基金资助项目(60572139)
教育部新世纪优秀人才支持计划基金资助项目(NCET-06-0744)
霍英东教育基金资助项目(101069)
关键词
对称密码
加/解密算法
圆性质
symmetric cryptogram
encryption and decryption algorithm
circle property
