/// <summary>
/// AES解密(无向量)
/// </summary>
/// <param name="encryptedBytes">被加密的明文</param>
/// <param name="key">密钥</param>
/// <returns>明文</returns>
public static string AESDecrypt(String Data, String Key)
{
MYLIB mylib = new MYLIB();
Byte[] encryptedBytes = mylib.AscToBcd(Data, Data.Length);
Byte[] bKey = new Byte[32];
Array.Copy(Encoding.UTF8.GetBytes(Key.PadRight(bKey.Length)), bKey, bKey.Length);
MemoryStream mStream = new MemoryStream(encryptedBytes);
//mStream.Write( encryptedBytes, 0, encryptedBytes.Length );
//mStream.Seek( 0, SeekOrigin.Begin );
RijndaelManaged aes = new RijndaelManaged();
aes.Mode = CipherMode.ECB;
aes.Padding = PaddingMode.PKCS7;
aes.KeySize = 128;
aes.Key = bKey;
//aes.IV = _iV;
CryptoStream cryptoStream = new CryptoStream(mStream, aes.CreateDecryptor(), CryptoStreamMode.Read);
try
{
byte[] tmp = new byte[encryptedBytes.Length + 32];
int len = cryptoStream.Read(tmp, 0, encryptedBytes.Length + 32);
byte[] ret = new byte[len];
Array.Copy(tmp, 0, ret, 0, len);
return(Encoding.UTF8.GetString(ret));
}
finally
{
cryptoStream.Close();
mStream.Close();
aes.Clear();
}
}
public static string AESDecrypt(String Data, String Key, String Vector)
{
MYLIB mylib = new MYLIB();
// 256-AES key
byte[] keyArray = new byte[Key.Length / 2];
mylib.GetHexFromString(Key, keyArray);
//"112233" -> 0x11, 0x22, 0x33
byte[] toEncryptArray = new byte[Data.Length / 2];
mylib.GetHexFromString(Data, toEncryptArray);
RijndaelManaged rDel = new RijndaelManaged();
rDel.IV = Encoding.UTF8.GetBytes(Vector.Substring(0, 16));
rDel.Key = keyArray;
rDel.Mode = CipherMode.ECB;
rDel.Padding = PaddingMode.PKCS7;
ICryptoTransform cTransform = rDel.CreateDecryptor();
byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0,
toEncryptArray.Length);
return(Encoding.UTF8.GetString(resultArray));
}
public static string AESEncrypt02(String Data, String Key)
{
MYLIB mylib = new MYLIB();
// 256-AES key
//byte[] keyArray = new byte[Key.Length / 2];
//mylib.GetHexFromString(Key, keyArray);
byte[] keyArray = HexStringToBytes(Key);
//byte[] toEncryptArray = Encoding.UTF8.GetBytes(Data);
byte[] toEncryptArray = UTF8Encoding.ASCII.GetBytes(Data);
RijndaelManaged rDel = new RijndaelManaged();
//rDel.IV = Encoding.UTF8.GetBytes(AES_IV.Substring(0, 16));
rDel.Key = keyArray;
rDel.Mode = CipherMode.ECB;
rDel.Padding = PaddingMode.PKCS7;
ICryptoTransform cTransform = rDel.CreateEncryptor();
byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0,
toEncryptArray.Length);
//0x11, 0x22, 0x33 -> "112233"
return(BytesToHexString(resultArray));
}
