CryptoJS.cs

using System;
using System.Collections.Generic;
using System.IO;
using System.Security.Cryptography;
using System.Text;

namespace z.Data
{
    public static class CryptoJS
    {
        public static string Encrypt(string Data, string Password, string Salt)
        {
            var compData = Data.CompressUriEncoded();
            var keybytes = Encoding.UTF8.GetBytes(Password);
            var iv = Encoding.UTF8.GetBytes(Salt);

            return Convert.ToBase64String(CryptoJS.EncryptStringToBytes(compData, keybytes, iv));

            //Data.CompressUriEncoded();

            //var keybytes = Encoding.UTF8.GetBytes(Password);
            //var iv = Encoding.UTF8.GetBytes(Salt);
            //var compData = Convert.ToBase64String(CryptoJS.EncryptStringToBytes(Data, keybytes, iv));

            //return compData; //.CompressUriEncoded();
        }

        public static string Decrypt(string Data, string Password, string Salt)
        {
            var keybytes = Encoding.UTF8.GetBytes(Password);
            var iv = Encoding.UTF8.GetBytes(Salt);

            var decrypt = CryptoJS.DecryptStringFromBytes(Convert.FromBase64String(Data), keybytes, iv);

            return decrypt.CompressFromUriEncoded();
            //var keybytes = Encoding.UTF8.GetBytes(Password);
            //var iv = Encoding.UTF8.GetBytes(Salt);

            ////var compdata = Data //.CompressFromUriEncoded(); //CryptoJS.DecryptStringFromBytes(Convert.FromBase64String(Data), keybytes, iv);
            //var decrypt = CryptoJS.DecryptStringFromBytes(Convert.FromBase64String(Data), keybytes, iv);

            //return decrypt; //.CompressFromBase64() ;
        }


        public static byte[] EncryptStringToBytes(string plainText, byte[] key, byte[] iv)
        {
            // Check arguments.
            if (plainText == null || plainText.Length <= 0)
            {
                throw new ArgumentNullException("plainText");
            }
            if (key == null || key.Length <= 0)
            {
                throw new ArgumentNullException("key");
            }
            if (iv == null || iv.Length <= 0)
            {
                throw new ArgumentNullException("key");
            }
            byte[] encrypted;
            // Create a RijndaelManaged object
            // with the specified key and IV.
            using (var rijAlg = new RijndaelManaged())
            {
                rijAlg.Mode = CipherMode.CBC;
                rijAlg.Padding = PaddingMode.PKCS7;
                rijAlg.FeedbackSize = 128;

                rijAlg.Key = key;
                rijAlg.IV = iv;

                // Create a decrytor to perform the stream transform.
                var encryptor = rijAlg.CreateEncryptor(rijAlg.Key, rijAlg.IV);

                // Create the streams used for encryption.
                using (var msEncrypt = new MemoryStream())
                {
                    using (var csEncrypt = new CryptoStream(msEncrypt, encryptor, CryptoStreamMode.Write))
                    {
                        using (var swEncrypt = new StreamWriter(csEncrypt))
                        {
                            //Write all data to the stream.
                            swEncrypt.Write(plainText);
                        }
                        encrypted = msEncrypt.ToArray();
                    }
                }
            }

            // Return the encrypted bytes from the memory stream.
            return encrypted;
        }

        private static string DecryptStringFromBytes(byte[] cipherText, byte[] key, byte[] iv)
        {
            // Check arguments.
            if (cipherText == null || cipherText.Length <= 0)
            {
                throw new ArgumentNullException("cipherText");
            }
            if (key == null || key.Length <= 0)
            {
                throw new ArgumentNullException("key");
            }
            if (iv == null || iv.Length <= 0)
            {
                throw new ArgumentNullException("key");
            }

            // Declare the string used to hold
            // the decrypted text.
            string plaintext = null;

            // Create an RijndaelManaged object
            // with the specified key and IV.
            using (var rijAlg = new RijndaelManaged())
            {
                //Settings
                rijAlg.Mode = CipherMode.CBC;
                rijAlg.Padding = PaddingMode.PKCS7;
                rijAlg.FeedbackSize = 128;

                rijAlg.Key = key;
                rijAlg.IV = iv;

                // Create a decrytor to perform the stream transform.
                var decryptor = rijAlg.CreateDecryptor(rijAlg.Key, rijAlg.IV);

                // Create the streams used for decryption.
                using (var msDecrypt = new MemoryStream(cipherText))
                {
                    using (var csDecrypt = new CryptoStream(msDecrypt, decryptor, CryptoStreamMode.Read))
                    {
                        using (var srDecrypt = new StreamReader(csDecrypt))
                        {
                            // Read the decrypted bytes from the decrypting stream
                            // and place them in a string.
                            plaintext = srDecrypt.ReadToEnd();
                        }
                    }
                }
            }

            return plaintext;
        }

    }
}