C#实现RSA加密和解密详解

1.生成一对keys:

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/// <summary> /// generate private key and public key arr[0] for private key arr[1] for public key /// </summary> /// <returns></returns> public static string[] GenerateKeys() {     string[] sKeys = new String[2];     RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();     sKeys[0] = rsa.ToXmlString(true);     sKeys[1] = rsa.ToXmlString(false);     return sKeys; }

　

RSA加密解密源码：

　　

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/// <summary> /// RSA加密 /// </summary> /// <param name="publickey"></param> /// <param name="content"></param> /// <returns></returns> public static string RSAEncrypt(string publickey, string content) {     publickey = @"<RSAKeyValue><Modulus>5m9m14XH3oqLJ8bNGw9e4rGpXpcktv9MSkHSVFVMjHbfv+SJ5v0ubqQxa5YjLN4vc49z7SVju8s0X4gZ6AzZTn06jzWOgyPRV54Q4I0DCYadWW4Ze3e+BOtwgVU1Og3qHKn8vygoj40J6U85Z/PTJu3hN1m75Zr195ju7g9v4Hk=</Modulus><Exponent>AQAB</Exponent></RSAKeyValue>";     RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();     byte[] cipherbytes;     rsa.FromXmlString(publickey);     cipherbytes = rsa.Encrypt(Encoding.UTF8.GetBytes(content), false);       return Convert.ToBase64String(cipherbytes); }   /// <summary> /// RSA解密 /// </summary> /// <param name="privatekey"></param> /// <param name="content"></param> /// <returns></returns> public static string RSADecrypt(string privatekey, string content) {     privatekey = @"<RSAKeyValue><Modulus>5m9m14XH3oqLJ8bNGw9e4rGpXpcktv9MSkHSVFVMjHbfv+SJ5v0ubqQxa5YjLN4vc49z7SVju8s0X4gZ6AzZTn06jzWOgyPRV54Q4I0DCYadWW4Ze3e+BOtwgVU1Og3qHKn8vygoj40J6U85Z/PTJu3hN1m75Zr195ju7g9v4Hk=</Modulus><Exponent>AQAB</Exponent><P>/hf2dnK7rNfl3lbqghWcpFdu778hUpIEBixCDL5WiBtpkZdpSw90aERmHJYaW2RGvGRi6zSftLh00KHsPcNUMw==</P><Q>6Cn/jOLrPapDTEp1Fkq+uz++1Do0eeX7HYqi9rY29CqShzCeI7LEYOoSwYuAJ3xA/DuCdQENPSoJ9KFbO4Wsow==</Q><DP>ga1rHIJro8e/yhxjrKYo/nqc5ICQGhrpMNlPkD9n3CjZVPOISkWF7FzUHEzDANeJfkZhcZa21z24aG3rKo5Qnw==</DP><DQ>MNGsCB8rYlMsRZ2ek2pyQwO7h/sZT8y5ilO9wu08Dwnot/7UMiOEQfDWstY3w5XQQHnvC9WFyCfP4h4QBissyw==</DQ><InverseQ>EG02S7SADhH1EVT9DD0Z62Y0uY7gIYvxX/uq+IzKSCwB8M2G7Qv9xgZQaQlLpCaeKbux3Y59hHM+KpamGL19Kg==</InverseQ><D>vmaYHEbPAgOJvaEXQl+t8DQKFT1fudEysTy31LTyXjGu6XiltXXHUuZaa2IPyHgBz0Nd7znwsW/S44iql0Fen1kzKioEL3svANui63O3o5xdDeExVM6zOf1wUUh/oldovPweChyoAdMtUzgvCbJk1sYDJf++Nr0FeNW1RB1XG30=</D></RSAKeyValue>";     RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();     byte[] cipherbytes;     rsa.FromXmlString(privatekey);     cipherbytes = rsa.Decrypt(Convert.FromBase64String(content), false);       return Encoding.UTF8.GetString(cipherbytes); }

　　

转载自：http://www.cnblogs.com/linzheng/archive/2011/02/20/1959123.html

 

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