the public key encryption algorithm

The key used for the data encryption is encrypted itself using an asymmetric algorithm with the public key associated with the Service Provider's X.509 certificate.

用于数据加密的密钥是使用带有与服务提供者（Service Provider）的 X.509 证书相关联的公钥的非对称算法进行加密的。

As the encryption algorithm and decryption algorithm are open to everyone, so the private key storage management becomes an insecure part in public key system.

在公钥密码系统中加密和解密算法是公开的，因此私钥存储管理成了公钥系统安全中薄弱的环节。

Then to combine the RSA digital signature algorithm, we design an undeniable RSA encryption protocol with small public key for both sides.

然后，利用改进的加密方案，结合RS A签名算法，设计了一个双方不可否认的小公钥rsa加密协议。