/// <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);
}
/// <summary>
/// Initializes a new instance of the CounterBasedOtpGenerator class.
/// </summary>
/// <param name="username">Usually a cryptographically secure key, I've altered the algorithm to take a username to fit the specs</param>
/// <param name="otpLength">The number of digits in the OTP to generate.</param>
/// <param name="hmacAlgorithm">The hashing algorithm to use.</param>
public OathTimeOtpGenerator(byte[] username, int otpLength, IHMACAlgorithm hmacAlgorithm)
{
_otpGenerator = new OathOtpGenerator(username, otpLength, hmacAlgorithm);
}
/// <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);
}
/// <summary>
/// Initializes a new instance of the CounterBasedOtpGenerator class.
/// This is used when the client and server share a counter value.
/// </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 hashing algorithm to use.</param>
public CounterBasedOtpGenerator(Key secretKey, int otpLength, IHMACAlgorithm hmacAlgorithm)
{
this.secretKey = secretKey;
this.otpLength = otpLength;
this.hmacAlgorithm = hmacAlgorithm;
}
/// <summary>
/// Initializes a new instance of the CounterBasedOtpGenerator class.
/// This is used when the client and server share a counter value.
/// </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 hashing algorithm to use.</param>
public CounterBasedOtpGenerator(Key secretKey, int otpLength, IHMACAlgorithm hmacAlgorithm)
{
this.secretKey = secretKey;
this.otpLength = otpLength;
this.hmacAlgorithm = hmacAlgorithm;
}
