public void OtpGenerator_GeneratesCharsAToZ()
{
var otpGenerator = new OtpGenerator();
var genSet = new HashSet <char>();
while (genSet.Count < MAX_DIFF_CHARS_COUNT)
{
foreach (char c in otpGenerator.Generate(BATCH_SIZE))
{
if (!AllowedChars.Contains(c))
{
Assert.Fail("Generated disallowed char: {0}", c);
}
genSet.Add(c);
}
}
if (genSet.Count > MAX_DIFF_CHARS_COUNT)
{
Assert.Fail("Generated too many diff characters: gen {0} vs max {0}", genSet.Count, MAX_DIFF_CHARS_COUNT);
}
foreach (char c in AllowedChars)
{
if (!genSet.Contains(c))
{
Assert.Fail("{0} was not generated", c);
}
}
}
public bool ValidateRecoveryCode(string code, IMultiFactorSettings mfa)
{
var otps = this.ToHotp(mfa);
var otp = new OtpGenerator(otps);
return(otp.Generate(offset: mfa.RecoveryTripCount) == code);
}
public IEnumerable <string> GenerateRecoveryCodes(IMultiFactorSettings mfa)
{
var recs = this.ToHotp(mfa);
var otp = new OtpGenerator(recs);
for (var i = 0; i < 10; i++)
{
var code = otp.Generate(groupSize: 4);
if (i >= mfa.RecoveryTripCount)
{
yield return(code);
}
}
}
