public BitString GetMacData(INoKeyConfirmationParameters param)
{
return(new BitString(
Encoding.ASCII.GetBytes(STANDARD_MESSAGE)
)
.ConcatenateBits(param.Nonce));
}
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 NoKeyConfirmationHmac(
INoKeyConfirmationMacDataCreator macDataCreator,
INoKeyConfirmationParameters noKeyConfirmationParameters,
IHmac algo)
: base(macDataCreator, noKeyConfirmationParameters)
{
Algo = algo;
}
public BitString GetMacData(INoKeyConfirmationParameters param)
{
var result = _noKeyConfirmationMacDataCreator.GetMacData(param);
result[0] += 2;
return(result);
}
public NoKeyConfirmationAesCcm(INoKeyConfirmationMacDataCreator macDataCreator,
INoKeyConfirmationParameters noKeyConfirmationParameters,
IAeadModeBlockCipher algo)
: base(macDataCreator, noKeyConfirmationParameters)
{
_algo = algo;
if (BitString.IsZeroLengthOrNull(noKeyConfirmationParameters.CcmNonce))
{
throw new ArgumentException(nameof(noKeyConfirmationParameters.CcmNonce));
}
}
protected NoKeyConfirmationBase(
INoKeyConfirmationMacDataCreator macDataCreator,
INoKeyConfirmationParameters noKeyConfirmationParameters)
{
_macDataCreator = macDataCreator;
NoKeyConfirmationParameters = noKeyConfirmationParameters;
if (BitString.IsZeroLengthOrNull(NoKeyConfirmationParameters.DerivedKeyingMaterial))
{
throw new ArgumentException(nameof(NoKeyConfirmationParameters.DerivedKeyingMaterial));
}
if (BitString.IsZeroLengthOrNull(NoKeyConfirmationParameters.Nonce))
{
throw new ArgumentException(nameof(NoKeyConfirmationParameters.Nonce));
}
}
public INoKeyConfirmation GetInstance(INoKeyConfirmationParameters parameters)
{
var noKeyConfirmation = _noKeyConfirmationFactory.GetInstance(parameters);
return(new FakeNoKeyConfirmation_BadMacData(noKeyConfirmation));
}
