一种改进的RSA算法。RSA是目前最有影响力的公钥加密算法，它能够抵抗到目前为止已知的所有密码攻击，已被ISO推荐为公钥数据加密标准。RSA算法基于一个十分简单的数论事实：将两个大素数相乘十分容易，但那时想要对其乘积进行因式分解却极其困难，因此可以将乘积公开作为加密密钥。-An improved RSA algorithm. RSA public key encryption algorithm is the most influential, and it can resist all so far known password attack, has been recommended by the ISO standard for public-key data encryption. The RSA algorithm is based on a very simple number theory facts: multiplying two large prime numbers is very easy, but when you want their product of factoring is extremely difficult, and therefore can be the product of the public as an encryption key.