SHA-1在椭圆曲线密码加密通信协议中的应用

SHA-1 in the Elliptic Curve Cryptosystem Encrypted Communication Protocol

椭圆曲线密码是一种非对称加密,其加密速度低于对称加密算法,但是由于对称加密无法完成密钥的安全传递问题,所以一般使用非对称加密和对称加密组合的方式对文件进行加密,常用的对称算法有DES,3DES等,但是随着技术的发展,其加密强度已经逐渐不能满足要求。提出了一个椭圆曲线密码加密通信协议,通过引入了一种新的加密方式:采用SHA-1算法,与椭圆曲线密码相结合的方式,取代普遍使用的对称加密算法,达到了加密速度和强度上的要求,最后对加密的强度和抗攻击性作了简要的分析。

Elliptic Curve Cryptosystem is a non-symmetric encryption.The encryption is slower than symmetric encryption algorithm,but the symmetric encryption can＇t solve the key transfer security.So we generally use asymmetric encryption and symmetric encryption portfolio approach to document encryption.Usually,symmetric algorithms are DES,3DES,and so on.But as the technology develops,its strength of the encryption can not meet the requirements.This paper presents a Elliptic Curve Cryptosystem encryption communication protocol,introduction of a new Elliptic Curve Cryptosystem encryption method： Using SHA-1 algorithm,combined with the Elliptic Curve Cryptosystem,instead of the commonly used symmetric encryption algorithm.The encryption speed and intensity reach the request.Finally,the encryption strength and offensive is briefly analyzed.