/// <summary>
/// AES解密字节数组并获得结果（AES decrypts the byte array and gets the result）
/// </summary>
/// <param name="input">字节数组</param>
/// <param name="key">AES KEY</param>
/// <param name="iv">AES IV</param>
/// <param name="cipherMode">密码模式</param>
/// <param name="paddingMode">填充模式</param>
/// <returns></returns>
public static string AESDecryptFromBytes(byte[] input, string key, string iv = null, AesCipherMode cipherMode = AesCipherMode.CBC, AesPaddingMode paddingMode = AesPaddingMode.PKCS7Padding)
{
//AES 加密算法
var algorithm = string.Format("{0}/{1}/{2}", "AES", cipherMode.ToString(), paddingMode.GetDescription());
//AES 算法实例
var cipher = CipherUtilities.GetCipher(algorithm);
//ECB模式下 传入IV无效
if (cipherMode == AesCipherMode.ECB)
{
iv = null;
}
if (string.IsNullOrWhiteSpace(iv))
{
cipher.Init(false, ParameterUtilities.CreateKeyParameter("AES", Encoding.UTF8.GetBytes(key)));
}
else
{
cipher.Init(false, new ParametersWithIV(ParameterUtilities.CreateKeyParameter("AES", Encoding.UTF8.GetBytes(key)), Encoding.UTF8.GetBytes(iv)));
}
var bytes = cipher.DoFinal(input);
return(Encoding.UTF8.GetString(bytes));
}
