public ISecretKeyingMaterial Build(KasScheme scheme, KasMode kasMode, KeyAgreementRole thisPartyKeyAgreementRole,
KeyConfirmationRole keyConfirmationRole, KeyConfirmationDirection keyConfirmationDirection)
{
var schemeRequirements = KasEnumMapping.GetSchemeRequirements(
scheme,
kasMode,
thisPartyKeyAgreementRole,
keyConfirmationRole,
keyConfirmationDirection);
ValidateDomainParameters(schemeRequirements.requirments, _domainParameters);
ValidateEphemeralKey(schemeRequirements.requirments, _ephemeralKey);
ValidateStaticKey(schemeRequirements.requirments, _staticKey);
ValidateEphemeralNonce(schemeRequirements.requirments, _ephemeralNonce);
ValidateDkmNonce(schemeRequirements.requirments, _dkmNonce);
ValidatePartyId(schemeRequirements.requirments, _partyId);
ValidateConsistentAlgorithm(schemeRequirements.kasAlgo, schemeRequirements.requirments, _domainParameters, _ephemeralKey, _staticKey);
return(new SecretKeyingMaterial()
{
KasAlgorithm = schemeRequirements.kasAlgo,
DkmNonce = _dkmNonce,
DomainParameters = _domainParameters,
EphemeralNonce = _ephemeralNonce,
EphemeralKeyPair = _ephemeralKey,
StaticKeyPair = _staticKey,
PartyId = _partyId,
});
}
public KasAlgoAttributes(KasScheme kasScheme)
{
KasScheme = kasScheme;
}
public static (SchemeKeyNonceGenRequirement requirments, KasAlgorithm kasAlgo) GetSchemeRequirements(KasScheme scheme, KasMode kasMode, KeyAgreementRole thisPartyKeyAgreementRole, KeyConfirmationRole keyConfirmationRole, KeyConfirmationDirection keyConfirmationDirection)
{
FfcMap.TryFirst(f => f.Value == scheme, out var ffcResult);
EccMap.TryFirst(f => f.Value == scheme, out var eccResult);
if (ffcResult.Key == FfcScheme.None && eccResult.Key == EccScheme.None)
{
throw new ArgumentException($"Unable to map {nameof(scheme)} to {nameof(ffcResult)} or {nameof(eccResult)}");
}
if (ffcResult.Key != FfcScheme.None)
{
return(
KeyGenerationRequirementsHelper.GetKeyGenerationOptionsForSchemeAndRole(
ffcResult.Key, kasMode, thisPartyKeyAgreementRole, keyConfirmationRole, keyConfirmationDirection),
KasAlgorithm.Ffc);
}
return(
KeyGenerationRequirementsHelper.GetKeyGenerationOptionsForSchemeAndRole(
eccResult.Key, kasMode, thisPartyKeyAgreementRole, keyConfirmationRole, keyConfirmationDirection),
KasAlgorithm.Ecc);
}
