一种基于DES,RSA的随机加密算法

随着Internet的快速发展,对网络中信息传输的安全性要求越来越高。加密技术是网络安全技术的基石。目前典型的加密算法各有优缺点,如DES算法速度快,但安全性较低且密钥长度固定;RSA算法安全性高,密钥长度不固定,但运算速度较慢。文中提出基于DES,RSA的随机加密算法,可根据选取规则来选择DES或RSA算法来加密信息,然后将算法标记、密钥长度、密钥及密文信息组织成新的信息进行传输。这样既能快速地对数据进行加解密,又能很好地解决密钥分配问题,在保证安全性的前提下,也提高了算法效率。

A Random Encryption Algorithm Based on DES,RSA Algorithm

With the rapid development of Internet,the security of information transformation in the network has become more and more important.Encryption technology is the cornerstone of network security technology.At present,the typical encryption algorithms have advantages and disadvantages,such as,DES algorithm is fast,but its security is low and the length of key is fixed.RSA algorithm is safer,and its length of key is not fixed,but it is slower.In this paper,the random encryption algorithm based on DES,RSA algorithm chooses DES or RSA algorithm to encrypt information according to the selection rules,and then organizes the flag of algorithm,the length of key,key and the ciphertext information into the new information to transmit.This can not only encrypt and decrypt the data rapidly,but also be a good solution to key distribution problem,and improve the efficiency of the algorithm under the promise of security.