【摘要】 笔者在IDEA体制的基础上给出了REESSE对称密钥密码体制,新体制分组长度被扩展为128比特,轮函数做了改变,速度加快,密钥长度仍为128比特。文章阐述了REESSE对称体制的算法、加密子密钥和解密子密钥,对算法的正确性进行了证明,对体制的安全性做了简单分析。更多还原

【Abstract】 On the basis of the IDEA cryptosystem,the author puts forward the REE SS E symmetric key cryptosystem of which the block length is extended to128bits ,round function is modified,speed is lifted and key length is still128bits .The author expounds the algorithm,encryption and decryption sub_key of the R EESSE cryptosystem,makes demonstration of the algorithmic correctness,and anal yzes the security of the cryptosystem shallowly.更多还原