/// <summary>
/// Des解密
/// </summary>
/// <param name="cipherText"></param>
/// <param name="key"></param>
/// <param name="plainText"></param>
/// <returns></returns>
public static bool DesDecrypt(string cipherText, string key, out string plainText)
{
Encoding utf8 = Encoding.UTF8;
try
{
DesEncodeDecode des = new DesEncodeDecode(key,
System.Security.Cryptography.CipherMode.ECB,
System.Security.Cryptography.PaddingMode.PKCS7,
true, utf8);
byte[] input = Base58.Decode(cipherText);
byte[] output = des.DesDecrypt(input);
plainText = utf8.GetString(output);
return(true);
}
catch (Exception ex)
{
plainText = ex.Message;
return(false);
}
}
/// <summary>
/// 从TOKEN中解密数据
/// </summary>
/// <param name="cipherToken"></param>
/// <returns></returns>
public static UserToken FromCipherToken(string cipherToken)
{
byte[] input = Base58.Decode(cipherToken);
var des = new DesEncodeDecode(SECRET, System.Security.Cryptography.CipherMode.ECB, System.Security.Cryptography.PaddingMode.PKCS7, true);
byte[] output = des.DesDecrypt(input);
string plainText = Encoding.UTF8.GetString(output);
string[] array = plainText.Split('|');
int seconds;
int user_id, appid;
if (!int.TryParse(array[0], out seconds))
{
return(null);
}
TimeStamp timestamp = seconds;
if (!int.TryParse(array[1], out user_id))
{
return(null);
}
if (!int.TryParse(array[3], out appid))
{
return(null);
}
UserToken userToken = new UserToken
{
Expire_Time = timestamp.LocalDate,
UserCode = array[2],
UserId = user_id,
AppId = appid,
Verifiable = (array.Length > 3) ? (array[3] == "1") : false
};
return(userToken);
}