/// <summary>
/// AES解密base64字符串并获得结果（AES decrypts the base64 string and gets the result）
/// </summary>
/// <param name="input">解密字符串</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 AESDecryptFromBase64(string input, string key, string iv = "", AesCipherMode cipherMode = AesCipherMode.CBC, AesPaddingMode paddingMode = AesPaddingMode.PKCS7Padding)
{
var bytes = Convert.FromBase64String(input);
return(AESDecryptFromBytes(bytes, key, iv, cipherMode, paddingMode));
}
/// <summary>
/// AES解密十六进制字符串并获得结果（AES decrypts the hex string and gets the result）
/// </summary>
/// <param name="input">解密字符串</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 AESDecryptFromHex(string input, string key, string iv = null, AesCipherMode cipherMode = AesCipherMode.CBC, AesPaddingMode paddingMode = AesPaddingMode.PKCS7Padding)
{
var bytes = new byte[input.Length / 2];
for (int index = 0; index < input.Length / 2; index++)
{
var @char = input.Substring(index * 2, 2);
bytes[index] = Convert.ToByte(@char, 16);
}
return(AESDecryptFromBytes(bytes, key, iv, cipherMode, paddingMode));
}
/// <summary>
/// AES加密字符串并获得十六进制字符串结果（AES encrypts the string and gets the hex string result）
/// </summary>
/// <param name="input">加密字符串</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 AESEncryptToHex(string input, string key, string iv = null, AesCipherMode cipherMode = AesCipherMode.CBC, AesPaddingMode paddingMode = AesPaddingMode.PKCS7Padding)
{
var bytes = AESEncryptToBtyes(input, key, iv, cipherMode, paddingMode);
var builder = new StringBuilder();
foreach (var @byte in bytes)
{
builder.AppendFormat("{0:x2}", @byte);
}
return(builder.ToString());
}
/// <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));
}
/// <summary>
/// AES加密字符串并获得base64字符串结果（AES encrypts the string and gets the base64 string result）
/// </summary>
/// <param name="input">加密字符串</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 AESEncryptToBase64(string input, string key, string iv = null, AesCipherMode cipherMode = AesCipherMode.CBC, AesPaddingMode paddingMode = AesPaddingMode.PKCS7Padding)
{
var bytes = AESEncryptToBtyes(input, key, iv, cipherMode, paddingMode);
return(Convert.ToBase64String(bytes));
}
