public async Task NotSameTotp_OutOfTimeStep()
{
while (true)
{
if (DateTime.Now.Second % 5 == 0)
{
break;
}
await Task.Delay(800);
}
var totp = new Totp()
.Secret(Key)
.Length(8)
.ValidFor(TimeSpan.FromSeconds(5));
var value1 = totp.Compute();
await Task.Delay(6000);
var value2 = totp.Compute();
Assert.AreNotEqual(value1, value2);
}
public void ComputeTest(long offset, string expectedResult, HashAlgorithm algorithm)
{
var secret = algorithm switch
{
HashAlgorithm.Sha1 => Sha1Secret,
HashAlgorithm.Sha256 => Sha256Secret,
HashAlgorithm.Sha512 => Sha512Secret,
_ => throw new ArgumentOutOfRangeException(nameof(algorithm))
};
var totp = new Totp(secret, 30, algorithm, 8);
Assert.Equal(totp.Compute(offset), expectedResult);
}
}
public static void Main(string[] args)
{
var otp = new Totp(OtpHashAlgorithm.SHA1, 4);
var secretKey = "12345678901234567890";
var output = otp.Compute(secretKey);
Console.WriteLine($"output: {output}");
Thread.Sleep(1000 * 30);
var verifyResult = otp.Verify(secretKey, output);
Console.WriteLine($"Verify result: {verifyResult}");
verifyResult = otp.Verify(secretKey, output, TimeSpan.FromSeconds(60));
Console.WriteLine($"Verify result: {verifyResult}");
Console.ReadLine();
}