public void HotpFromMatchingHash(long binCode, int digitCount, string hotp, long expectedHotp)
{
"Given a desired HOTP length"
.x(() => digitCount = 6);
"And a truncated hash containing the same digits as the desired HOTP length"
.x(() => binCode = expectedHotp = Faker.Random.Long(111111, 999999));
"When HOTP value is computed"
.x(() => hotp = TestInstance.ExtractHotp(binCode, digitCount));
"Then the HOTP is the least significant 6 digits"
.x(() => hotp.ShouldBe($"{expectedHotp}"));
}
public void HotpFromShortHash(long hashMinimum, long hashMaximum, string expectedPadding,
long binCode, int digitCount, string hotp, long expectedHotp)
{
"Given a desired HOTP length"
.x(() => digitCount = 6);
"And a truncated hash containing fewer digits than the desired HOTP length"
.x(() => binCode = expectedHotp = Faker.Random.Long(hashMinimum, hashMaximum));
"When HOTP value is computed"
.x(() => hotp = TestInstance.ExtractHotp(binCode, digitCount));
"Then the HOTP is the least significant 6 digits"
.x(() => hotp.ShouldBe($"{expectedPadding}{expectedHotp}"));
}
public void HotpFromLongHash(long binCode, int digitCount, string hotp, long expectedHotp)
{
"Given a desired HOTP length"
.x(() => digitCount = 6);
"And a truncated hash containing more digits than the desired HOTP length"
.x(() =>
{
// 2147483647 is the largest possible truncated hash value
expectedHotp = Faker.Random.Long(111111, 483647);
binCode = long.Parse($"{Faker.Random.Long(1, 2147)}{expectedHotp}");
});
"When HOTP value is computed"
.x(() => hotp = TestInstance.ExtractHotp(binCode, digitCount));
"Then the HOTP is the least significant 6 digits"
.x(() => hotp.ShouldBe($"{expectedHotp}"));
}