.net 非对称加密

后台

  public class RSAHelper

    {

        /// <summary>

        /// RSA加密

        /// </summary>

        /// <param name="algorithmName"></param>

        /// <returns></returns>

        public static String Encrypt(String algorithmName)

        {

            int rsa = 1;

            CspParameters cspParms = new CspParameters(rsa);

            cspParms.Flags = CspProviderFlags.UseMachineKeyStore;

            cspParms.KeyContainerName = "ASSCSSSS";

            RSACryptoServiceProvider algorithm = new RSACryptoServiceProvider(cspParms);

            byte[] sourceBytes = new UnicodeEncoding().GetBytes(algorithmName);

            byte[] rasCipherText = algorithm.Encrypt(sourceBytes, true);

            return Convert.ToBase64String(rasCipherText);

        }

        /// <summary>

        /// RSA开始解密

        /// </summary>

        /// <param name="encryptedText"></param>

        /// <returns></returns>

        public static String Decrypt(String encryptedText)

        {

            var rsa = 1;

            // decrypt the data.

            byte[] encryptedBuffer = Convert.FromBase64String(encryptedText);

            var cspParms = new CspParameters(rsa);

            cspParms.Flags = CspProviderFlags.UseMachineKeyStore;

            cspParms.KeyContainerName = "ASSCSSSS";

            RSACryptoServiceProvider algorithm = new RSACryptoServiceProvider(cspParms);

            byte[] unencrypted = algorithm.Decrypt(encryptedBuffer, true);

            String Decrytoed = new UnicodeEncoding().GetString(unencrypted);

            return Decrytoed;

        }

    }  

 

前台

  String text = "欢迎光临!www.ritztours.com &&　成功了";

            String Encryptoed = RSAHelper.Encrypt(text);

           

            String Decryptoed = RSAHelper.Decrypt(Encryptoed);