public void ShouldThrowArgumentExceptionOnInvalidMacType(KeyAgreementMacType keyAgreementMacType)
{
ModeValues mode = ModeValues.SHA1;
DigestSizes digestSize = DigestSizes.NONE;
Assert.Throws(typeof(ArgumentException), () => EnumMapping.GetHashFunctionOptions(keyAgreementMacType, ref mode, ref digestSize));
}
public INoKeyConfirmation GetInstance(INoKeyConfirmationParameters parameters)
{
switch (parameters.KeyAgreementMacType)
{
case KeyAgreementMacType.AesCcm:
return(new NoKeyConfirmationAesCcm(_macDataCreator, parameters, new CcmBlockCipher(new AesEngine(), new ModeBlockCipherFactory(), new AES_CCMInternals())));
case KeyAgreementMacType.CmacAes:
return(new NoKeyConfirmationCmac(_macDataCreator, parameters, _cmacFactory.GetCmacInstance(CmacTypes.AES128))); // doesn't matter as long as aea
case KeyAgreementMacType.HmacSha1:
case KeyAgreementMacType.HmacSha2D224:
case KeyAgreementMacType.HmacSha2D256:
case KeyAgreementMacType.HmacSha2D384:
case KeyAgreementMacType.HmacSha2D512:
case KeyAgreementMacType.HmacSha2D512_T224:
case KeyAgreementMacType.HmacSha2D512_T256:
case KeyAgreementMacType.HmacSha3D224:
case KeyAgreementMacType.HmacSha3D256:
case KeyAgreementMacType.HmacSha3D384:
case KeyAgreementMacType.HmacSha3D512:
ModeValues modeValue = ModeValues.SHA2;
DigestSizes digestSize = DigestSizes.NONE;
EnumMapping.GetHashFunctionOptions(parameters.KeyAgreementMacType, ref modeValue, ref digestSize);
return(new NoKeyConfirmationHmac(_macDataCreator, parameters, _hmacFactory.GetHmacInstance(new HashFunction(modeValue, digestSize))));
default:
throw new ArgumentException($"{GetType().Name}, {nameof(parameters.KeyAgreementMacType)}");
}
}
public void ShouldSetCorrectHashFunctionAttributesFromHmac(KeyAgreementMacType keyAgreementMacType, ModeValues expectedModeValue, DigestSizes expectedDigestSize)
{
ModeValues mode = ModeValues.SHA1;
DigestSizes digestSize = DigestSizes.NONE;
EnumMapping.GetHashFunctionOptions(keyAgreementMacType, ref mode, ref digestSize);
Assert.AreEqual(expectedModeValue, mode, nameof(expectedModeValue));
Assert.AreEqual(expectedDigestSize, digestSize, nameof(expectedDigestSize));
}
public IKeyConfirmation GetInstance(IKeyConfirmationParameters parameters)
{
switch (parameters.MacType)
{
case KeyAgreementMacType.AesCcm:
ConfirmKeyLengthAesCcm(parameters.KeyLength);
return(new KeyConfirmationAesCcm(
_macDataCreator,
parameters,
new CcmBlockCipher(new AesEngine(), new ModeBlockCipherFactory(), new AES_CCMInternals())));
case KeyAgreementMacType.CmacAes:
var cmacEnum = MapCmacEnum(parameters.KeyLength);
return(new KeyConfirmationCmac(
_macDataCreator, parameters, _cmacFactory.GetCmacInstance(cmacEnum)));
case KeyAgreementMacType.HmacSha1:
case KeyAgreementMacType.HmacSha2D224:
case KeyAgreementMacType.HmacSha2D256:
case KeyAgreementMacType.HmacSha2D384:
case KeyAgreementMacType.HmacSha2D512:
case KeyAgreementMacType.HmacSha2D512_T224:
case KeyAgreementMacType.HmacSha2D512_T256:
case KeyAgreementMacType.HmacSha3D224:
case KeyAgreementMacType.HmacSha3D256:
case KeyAgreementMacType.HmacSha3D384:
case KeyAgreementMacType.HmacSha3D512:
ModeValues modeValue = ModeValues.SHA2;
DigestSizes digestSize = DigestSizes.NONE;
EnumMapping.GetHashFunctionOptions(parameters.MacType, ref modeValue, ref digestSize);
return(new KeyConfirmationHmac(
_macDataCreator, parameters, _hmacFactory.GetHmacInstance(new HashFunction(modeValue, digestSize))));
case KeyAgreementMacType.Kmac_128:
return(new KeyConfirmationKmac(_macDataCreator, parameters, _kmacFactory, 256));
case KeyAgreementMacType.Kmac_256:
return(new KeyConfirmationKmac(_macDataCreator, parameters, _kmacFactory, 512));
default:
throw new ArgumentException($"{GetType().Name}, {nameof(parameters.MacType)}");
}
}
public void ShouldMacCorrectly(int keyLength, int macLength, KeyAgreementMacType keyAgreementMacType, BitString dkm, BitString nonce, BitString expectedMacData, BitString expectedMac)
{
ModeValues modeValue = ModeValues.SHA2;
DigestSizes digestSize = DigestSizes.NONE;
EnumMapping.GetHashFunctionOptions(keyAgreementMacType, ref modeValue, ref digestSize);
NoKeyConfirmationParameters p =
new NoKeyConfirmationParameters(keyAgreementMacType, macLength, dkm, nonce);
_subject = new NoKeyConfirmationHmac(new NoKeyConfirmationMacDataCreator(), p, _algoFactory.GetHmacInstance(new HashFunction(modeValue, digestSize)));
var result = _subject.ComputeMac();
Assert.That(result.Success, nameof(result.Success));
Assert.AreEqual(expectedMacData.ToHex(), result.MacData.ToHex(), nameof(result.MacData));
Assert.AreEqual(expectedMac.ToHex(), result.Mac.ToHex(), nameof(result.Mac));
}