摘要
信息安全无论在军事上还是在商业应用上都十分重要 .美国的数据加密标准DES(DataEncryptionStandard)是迄今世界上最广泛使用和流行的一种分组密码算法 ,但由于密钥太短已面临淘汰 .本文中介绍一种分组密码———MUST1,它的明、密文都是12 8bit ,密钥长 2 5 6bit .同时从理论上证明了它的正确性 ,其抗攻击能力比DES更强 .测试结果表明 ,MUST1是高效的 ,它的加密速度是DES的 3倍 ,雪崩现象良好 .最后利用MUST1构造出HASH函数 ,同样具有抗攻击能力强、效率高的特点 .
The information security is not only the concern of governments in the world,but also the private sector zealously guarded over their national cryptologic services.DES (Data Encryption Standard) has been widely used in many realms all over the world.However,it is close to the end of its life due to key length is too short.This paper is one of our researches:the block cipher--MUST1.Both the plaintext and ciphertext are 128 bit per block;the key legth is 256 bit.The validity has been proved in theory,and the unbreakable capability is much better than DES (the key length is 56 bits).From the result of the commissioning test,we observed that MUST1 is high effective,its encryption speed is 3 times faster than DES;the avalanche effect is excellent.At the same time,we designed a HASH function by adopting the construction of MUST1.The HASH function has the same characteristics as in MUST1.
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2002年第7期32-34,48,共4页
Journal of South China University of Technology(Natural Science Edition)
基金
澳门发展与合作基金会资助项目
