sim756.HOTP

HMAC-based one-time password generator.

https://www.nuget.org/packages/sim756.HOTP

https://github.com/sim756/sim756.HOTP

string hotp = new HOTPGenerator().Compute("QWERTYUIOPASDFGH");

string nextHotp = new HOTPGenerator().Compute("QWERTYUIOPASDFGH", DateTime.UtcNow.AddSeconds(30));

string hotp = new HOTPGenerator()
{
  KeyString = "QWERTYUIOPASDFGH",
  Length = 6,
  Steps = 30
}.Compute();