WinPhone7手机中的AES加密，解密算法

    因工作需要，需要在winphone7手机上实现AES的加密，解密算法。经过自己的查找，终于找到了一个可以实现的代码，来和大家共享，代码如下：

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

namespace SheenClient.classes.eventhandler
{
    ///
    /// AES解密算法类
    ///
    public class AESEncryption
    {
        ///
        /// 默认密钥向量
        ///
        private static string salt = "PasswordSalt";

        ///
        /// 进行AES加密算法
        ///
        /// 要进行加密的字符串
        /// 进行加密的键
        /// 加密后的字符串
        public static string AesEncrypt(string dataToEncrypt, string key)
        {
            AesManaged aes = null;
            MemoryStream memoryStream = null;
            CryptoStream cryptoStream = null;

            try
            {
                //Generate a Key based on a Password, Salt and HMACSHA1 pseudo-random number generator
                Rfc2898DeriveBytes rfc2898 = new Rfc2898DeriveBytes(key, Encoding.UTF8.GetBytes(salt));

                //Create AES algorithm with 256 bit key and 128-bit block size
                aes = new AesManaged();
                aes.Key = rfc2898.GetBytes(aes.KeySize / 8);
                aes.IV = rfc2898.GetBytes(aes.BlockSize / 8);

                //Create Memory and Crypto Streams
                memoryStream = new MemoryStream();
                cryptoStream = new CryptoStream(memoryStream, aes.CreateEncryptor(), CryptoStreamMode.Write);

                //Encrypt Data
                byte[] data = Encoding.UTF8.GetBytes(dataToEncrypt);
                cryptoStream.Write(data, 0, data.Length);
                cryptoStream.FlushFinalBlock();

                //Return Base 64 String
                return Convert.ToBase64String(memoryStream.ToArray());
            }
            finally
            {
                if (cryptoStream != null)
                    cryptoStream.Close();

                if (memoryStream != null)
                    memoryStream.Close();

                if (aes != null)
                    aes.Clear();
            }
        }

        ///
        /// 进行AES解密
        ///
        /// 要进行解密的字符串
        /// 解密使用的键
        /// 解密后的明文字符串
        public static string AesDecrypt(string dataToDecrypt, string key)
        {
            AesManaged aes = null;
            MemoryStream memoryStream = null;
            CryptoStream cryptoStream = null;

            try
            {
                //Generate a Key based on a Password, Salt and HMACSHA1 pseudo-random number generator
                Rfc2898DeriveBytes rfc2898 = new Rfc2898DeriveBytes(key, Encoding.UTF8.GetBytes(salt));

                //Create AES algorithm with 256 bit key and 128-bit block size
                aes = new AesManaged();
                aes.Key = rfc2898.GetBytes(aes.KeySize / 8);
                aes.IV = rfc2898.GetBytes(aes.BlockSize / 8);

                //Create Memory and Crypto Streams
                memoryStream = new MemoryStream();
                cryptoStream = new CryptoStream(memoryStream, aes.CreateDecryptor(), CryptoStreamMode.Write);

                //Decrypt Data
                byte[] data = Convert.FromBase64String(dataToDecrypt);
                cryptoStream.Write(data, 0, data.Length);
                cryptoStream.FlushFinalBlock();

                //Return Decrypted String
                byte[] decryptBytes = memoryStream.ToArray();
                return Encoding.UTF8.GetString(decryptBytes, 0, decryptBytes.Length);
            }
            finally
            {
                if (cryptoStream != null)
                    cryptoStream.Close();

                if (memoryStream != null)
                    memoryStream.Close();

                if (aes != null)
                    aes.Clear();
            }
        }
    }
}

直接调用，就可以进行字符串的加密，解密了。