public void ShouldEncryptDecryptBackToSameValue(string label, string alphabet, string word, BitString tweak, BitString key)
{
var wordNumeralString = NumeralString.ToNumeralString(word, alphabet);
var encryptResult = _subject.ProcessPayload(new FfxModeBlockCipherParameters()
{
Direction = BlockCipherDirections.Encrypt,
Iv = tweak,
Key = key,
Payload = NumeralString.ToBitString(wordNumeralString),
Radix = alphabet.Length
});
var decryptResult = _subject.ProcessPayload(new FfxModeBlockCipherParameters()
{
Direction = BlockCipherDirections.Decrypt,
Iv = tweak,
Key = key,
Payload = encryptResult.Result,
Radix = alphabet.Length
});
Assert.AreEqual(
NumeralString.ToAlphabetString(alphabet, alphabet.Length, wordNumeralString),
NumeralString.ToAlphabetString(alphabet, alphabet.Length, NumeralString.ToNumeralString(decryptResult.Result))
);
}
public void ShouldDecryptAlphabetStringsCorrectly(string label, string alphabet, string word, BitString tweak, BitString key, string expectedResult)
{
var wordNumeralString = NumeralString.ToNumeralString(word, alphabet);
var expectedResultNumeralString = NumeralString.ToNumeralString(expectedResult, alphabet);
var result = _subject.ProcessPayload(new FfxModeBlockCipherParameters()
{
Direction = BlockCipherDirections.Decrypt,
Iv = tweak,
Key = key,
Payload = NumeralString.ToBitString(expectedResultNumeralString),
Radix = alphabet.Length
});
Assert.AreEqual(
NumeralString.ToAlphabetString(alphabet, alphabet.Length, wordNumeralString),
NumeralString.ToAlphabetString(alphabet, alphabet.Length, NumeralString.ToNumeralString(result.Result))
);
}
public void ShouldToAlphabetString(string alphabet, int[] numbers, string expectation)
{
Assert.AreEqual(expectation, NumeralString.ToAlphabetString(alphabet, alphabet.Length, new NumeralString(numbers)));
}