说明：  RSA算法它是第一个既能用于数据加密也能用于数字签名的算法。它易于理解和操作，也很流行。算法的名字以发明者的名字命名：Ron Rivest,Adi Shamir 和Leonard leman。但RSA的安全性一直未能得到理论上的证明。它经历了各种攻击，至今未被完全攻破。
(RSA algorithm is the first not only for data encryption can also be used for digital signature algorithm. It s easy to understand and operate, is also very popular. The name of the algorithm is named after the name of the inventor: Ron Rivest, Adi Shamir and Leonard Adleman. RSA Security has not been proved theoretically. It has gone through a variety of attacks, has not been completely compromised. )