private static string smethod_4(string string_0, string string_1, AuthCode.Enum0 enum0_0, int int_0)
{
if (string_0 == null || string_1 == null)
{
return(string.Empty);
}
int int_ = 0;
string_1 = AuthCode.MD5(string_1);
string text = AuthCode.MD5(AuthCode.smethod_0(string_1, 16, 16));
string text2 = AuthCode.MD5(AuthCode.smethod_0(string_1, 0, 16));
string empty = string.Empty;
string string_2 = text + AuthCode.MD5(text + empty);
if (enum0_0 != AuthCode.Enum0.const_1)
{
string_0 = ((int_0 != 0) ? ((long)int_0 + AuthCode.UnixTimestamp()).ToString() : "0000000000") + AuthCode.smethod_0(AuthCode.MD5(string_0 + text2), 0, 16) + string_0;
byte[] array = AuthCode.smethod_5(AuthCode.encoding_0.GetBytes(string_0), string_2);
return(empty + Convert.ToBase64String(array));
}
byte[] byte_;
string empty2;
try
{
byte_ = Convert.FromBase64String(AuthCode.smethod_1(string_0, int_));
goto IL_B7;
}
catch
{
try
{
byte_ = Convert.FromBase64String(AuthCode.smethod_1(string_0 + "=", int_));
}
catch
{
try
{
byte_ = Convert.FromBase64String(AuthCode.smethod_1(string_0 + "==", int_));
}
catch
{
empty2 = string.Empty;
return(empty2);
}
}
goto IL_B7;
}
return(empty2);
IL_B7:
string @string = AuthCode.encoding_0.GetString(AuthCode.smethod_5(byte_, string_2));
long num = long.Parse(AuthCode.smethod_0(@string, 0, 10));
if ((num == 0L || num - AuthCode.UnixTimestamp() > 0L) && AuthCode.smethod_0(@string, 10, 16) == AuthCode.smethod_0(AuthCode.MD5(AuthCode.smethod_1(@string, 26) + text2), 0, 16))
{
return(AuthCode.smethod_1(@string, 26));
}
return(string.Empty);
}