public bool Verify(long otp, OAuthUser user)
{
var key = user.GetOTPKey();
for (long i = user.OTPCounter - _options.HOTPWindow; i <= user.OTPCounter; i++)
{
if (GenerateOtp(key, i) == otp)
{
return(true);
}
}
return(false);
}
public bool Verify(long otp, OAuthUser user)
{
var currentDateTime = DateTime.UtcNow;
var key = user.GetOTPKey();
for (long offset = -1; offset <= 1; offset++)
{
var step = CalculateTimeStep(currentDateTime) + offset;
if (GenerateOtp(key, step) == otp)
{
return(true);
}
}
return(false);
}
public long GenerateOtp(OAuthUser oauthUser, DateTime date)
{
return(GenerateOtp(oauthUser.GetOTPKey(), CalculateTimeStep(date)));
}
public long GenerateOtp(OAuthUser oauthUser)
{
return(GenerateOtp(oauthUser.GetOTPKey(), CalculateTimeStep(DateTime.UtcNow)));
}
public long GenerateOtp(OAuthUser user)
{
return(GenerateOtp(user.GetOTPKey(), user.OTPCounter));
}