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【CSharp】 AES加密类
作者:伊菲 / 发布于2014/11/18/ 488

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

	namespace Utils
	{
	 /// <summary>
	 /// AES加密解密
	 /// </summary>
	 public class AES
	 {
	 #region 加密
	 #region 加密字符串
	 /// <summary>
	 /// AES 加密(高级加密标准，是下一代的加密算法标准，速度快，安全级别高，目前 AES 标准的一个实现是 Rijndael 算法)
	 /// </summary>
	 /// <param name="EncryptString">待加密密文</param>
	 /// <param name="EncryptKey">加密密钥</param>
	 public static string AESEncrypt(string EncryptString, string EncryptKey)
	 {
	 return Convert.ToBase64String(AESEncrypt(Encoding.Default.GetBytes(EncryptString), EncryptKey));
	 }
	 #endregion

	 #region 加密字节数组
	 /// <summary>
	 /// AES 加密(高级加密标准，是下一代的加密算法标准，速度快，安全级别高，目前 AES 标准的一个实现是 Rijndael 算法)
	 /// </summary>
	 /// <param name="EncryptString">待加密密文</param>
	 /// <param name="EncryptKey">加密密钥</param>
	 public static byte[] AESEncrypt(byte[] EncryptByte, string EncryptKey)
	 {
	 if (EncryptByte.Length == 0) { throw (new Exception("明文不得为空")); }
	 if (string.IsNullOrEmpty(EncryptKey)) { throw (new Exception("密钥不得为空")); }
	 byte[] m_strEncrypt;
	 byte[] m_btIV = Convert.FromBase64String("Rkb4jvUy/ye7Cd7k89QQgQ==");
	 byte[] m_salt = Convert.FromBase64String("gsf4jvkyhye5/d7k8OrLgM==");
	 Rijndael m_AESProvider = Rijndael.Create();
	 try
	 {
	 MemoryStream m_stream = new MemoryStream();
	 PasswordDeriveBytes pdb = new PasswordDeriveBytes(EncryptKey, m_salt);
	 ICryptoTransform transform = m_AESProvider.CreateEncryptor(pdb.GetBytes(32), m_btIV);
	 CryptoStream m_csstream = new CryptoStream(m_stream, transform, CryptoStreamMode.Write);
	 m_csstream.Write(EncryptByte, 0, EncryptByte.Length);
	 m_csstream.FlushFinalBlock();
	 m_strEncrypt = m_stream.ToArray();
	 m_stream.Close(); m_stream.Dispose();
	 m_csstream.Close(); m_csstream.Dispose();
	 }
	 catch (IOException ex) { throw ex; }
	 catch (CryptographicException ex) { throw ex; }
	 catch (ArgumentException ex) { throw ex; }
	 catch (Exception ex) { throw ex; }
	 finally { m_AESProvider.Clear(); }
	 return m_strEncrypt;
	 }
	 #endregion
	 #endregion

	 #region 解密
	 #region 解密字符串
	 /// <summary>
	 /// AES 解密(高级加密标准，是下一代的加密算法标准，速度快，安全级别高，目前 AES 标准的一个实现是 Rijndael 算法)
	 /// </summary>
	 /// <param name="DecryptString">待解密密文</param>
	 /// <param name="DecryptKey">解密密钥</param>
	 public static string AESDecrypt(string DecryptString, string DecryptKey)
	 {
	 return Convert.ToBase64String(AESDecrypt(Encoding.Default.GetBytes(DecryptString), DecryptKey));
	 }
	 #endregion

	 #region 解密字节数组
	 /// <summary>
	 /// AES 解密(高级加密标准，是下一代的加密算法标准，速度快，安全级别高，目前 AES 标准的一个实现是 Rijndael 算法)
	 /// </summary>
	 /// <param name="DecryptString">待解密密文</param>
	 /// <param name="DecryptKey">解密密钥</param>
	 public static byte[] AESDecrypt(byte[] DecryptByte, string DecryptKey)
	 {
	 if (DecryptByte.Length == 0) { throw (new Exception("密文不得为空")); }
	 if (string.IsNullOrEmpty(DecryptKey)) { throw (new Exception("密钥不得为空")); }
	 byte[] m_strDecrypt;
	 byte[] m_btIV = Convert.FromBase64String("Rkb4jvUy/ye7Cd7k89QQgQ==");
	 byte[] m_salt = Convert.FromBase64String("gsf4jvkyhye5/d7k8OrLgM==");
	 Rijndael m_AESProvider = Rijndael.Create();
	 try
	 {
	 MemoryStream m_stream = new MemoryStream();
	 PasswordDeriveBytes pdb = new PasswordDeriveBytes(DecryptKey, m_salt);
	 ICryptoTransform transform = m_AESProvider.CreateDecryptor(pdb.GetBytes(32), m_btIV);
	 CryptoStream m_csstream = new CryptoStream(m_stream, transform, CryptoStreamMode.Write);
	 m_csstream.Write(DecryptByte, 0, DecryptByte.Length);
	 m_csstream.FlushFinalBlock();
	 m_strDecrypt = m_stream.ToArray();
	 m_stream.Close(); m_stream.Dispose();
	 m_csstream.Close(); m_csstream.Dispose();
	 }
	 catch (IOException ex) { throw ex; }
	 catch (CryptographicException ex) { throw ex; }
	 catch (ArgumentException ex) { throw ex; }
	 catch (Exception ex) { throw ex; }
	 finally { m_AESProvider.Clear(); }
	 return m_strDecrypt;
	 }
	 #endregion
	 #endregion

	 }
	}
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