private void TestSHA1AndAssert(Key key, int digits, int counter, string expected)
{
var otp = new CounterBasedOtpGenerator(key, digits, new SHA1HMACAlgorithm());
var result = otp.GenerateOtp(counter);
Assert.AreEqual(expected, result);
}
/// <summary>
/// Initializes a new instance of the TimeBasedOtpGenerator class. This
/// is used when the client and server do not share a counter
/// value but the clocks between the two are synchronized within
/// reasonable margins of each other.
/// </summary>
/// <param name="secretKey">The secret key.</param>
/// <param name="otpLength">The number of digits in the OTP to generate.</param>
/// <param name="hmacAlgorithm">The HMAC algorithm to use.</param>
public TimeBasedOtpGenerator(Key secretKey, int otpLength, IHMACAlgorithm hmacAlgorithm)
{
this.counterOtp = new CounterBasedOtpGenerator(secretKey, otpLength, hmacAlgorithm);
}
private string GetOtpWithImplicitHMAC(Key key, int digits, int counter)
{
var otp = new CounterBasedOtpGenerator(key, digits);
return otp.GenerateOtp(counter);
}
/// <summary>
/// Initializes a new instance of the TimeBasedOtpGenerator class. This
/// is used when the client and server do not share a counter
/// value but the clocks between the two are synchronized within
/// reasonable margins of each other.
/// </summary>
/// <param name="secretKey">The secret key.</param>
/// <param name="otpLength">The number of digits in the OTP to generate.</param>
/// <param name="hmacAlgorithm">The HMAC algorithm to use.</param>
public TimeBasedOtpGenerator(Key secretKey, int otpLength, IHMACAlgorithm hmacAlgorithm)
{
this.counterOtp = new CounterBasedOtpGenerator(secretKey, otpLength, hmacAlgorithm);
}
