public void ParseWithRsa1985KeyDkimRecord()
{
IRsaPublicKeyEvaluator rsaPublicKeyEvaluator = A.Fake <IRsaPublicKeyEvaluator>();
int anOut;
A.CallTo(() => rsaPublicKeyEvaluator.TryGetKeyLengthSize(A <string> ._, out anOut)).Returns(true).AssignsOutAndRefParameters(1985);
IDkimRecordParser parser = Create(rsaPublicKeyEvaluator);
string record = "v=DKIM1;"
+ "k=rsa;"
+ "n=hello world;"
+ "s=*;"
+ "h=sha256;"
+ "t=y;"
+ "p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvtzV5FCafF4GWCsuV0qhyDpV8pz7QrFxF8JABDl+kewpUIhTRujuKQbeAIuPzbiTe0djy1tPIyzEASChfPpSg7C9RrJlKlluyYN1H4ORJQsnAuwAy8+Eur+Zjo1o6xItxsac9RUvl4eCm8ZSkhtdu1HMRV0+rq2S1+E0cqwyO7xw2alhLRmu96Dgy2j4dz/8teguAUEaNGQECcd7h7DM" +
"8vo8IZgyJHJdaMQHX7zhuRUP8fjsrD5YUfOsm/kzSJfSKEk9cXwKk8p5QoiHG+W4/tc/nyl+uqz9fUF/K0d9qCvHE31mu3to2GCakABPU9XpczhIwYkGB6ASdd53PKhXJwIDAQAB";
DkimRecord dkimRecord = parser.Parse(new DnsRecord(record, new List <string>()));
Assert.That(dkimRecord.Errors.Count, Is.EqualTo(1));
Assert.That(dkimRecord.Errors.First().ErrorType, Is.EqualTo(EvaluationErrorType.Warning));
Assert.That(dkimRecord.Errors.First().Id, Is.EqualTo(Guid.Parse("d16be8d5-8ed6-4dd0-a8aa-c8f1380a8d3c")));
}
public Task <List <EvaluationError> > Evaluate(DkimRecord record)
{
PublicKeyData publicKeyData = record.Tags.OfType <PublicKeyData>().FirstOrDefault();
PublicKeyType publicKeyType = record.Tags.OfType <PublicKeyType>().FirstOrDefault();
List <EvaluationError> errors = new List <EvaluationError>();
if (publicKeyData != null && publicKeyType != null && !string.IsNullOrEmpty(publicKeyData.Value))
{
if (publicKeyType.KeyType != KeyType.Unknown)
{
switch (publicKeyType.KeyType)
{
case KeyType.Ed25519:
break;
case KeyType.Rsa:
string key = publicKeyData.Value.TrimEnd(';');
if (!_publicKeyEvaluator.TryGetKeyLengthSize(key, out int keyLength))
{
Guid Error3Id = Guid.Parse("21B09D43-685C-4CAE-989E-7194CA093863");
errors.Add(new EvaluationError(Error3Id, EvaluationErrorType.Error,
DKimEvaluatorRulesResources.CorruptPublicKeyErrorMessage,
DKimEvaluatorRulesMarkdownResources.CorruptPublicKeyErrorMessage));
}
else if (keyLength < 2048)
{
if (keyLength < 1024)
{
Guid Error1Id = Guid.Parse("C740A1B0-394B-4397-A4E6-178C3137A84D");
errors.Add(new EvaluationError(Error1Id, EvaluationErrorType.Error,
string.Format(DKimEvaluatorRulesResources.PublicKeyIsToShortErrorMessage,
keyLength),
string.Empty));
}
else if (keyLength >= 1024 && keyLength < 2048)
{
Guid Error2Id = Guid.Parse("D16BE8D5-8ED6-4DD0-A8AA-C8F1380A8D3C");
errors.Add(new EvaluationError(Error2Id, EvaluationErrorType.Warning,
string.Format(
DKimEvaluatorRulesResources.PublicKeyIsToShortUseLongerErrorMessage,
keyLength),
string.Empty));
}
}
break;
}
}
else
{
Guid Error3Id = Guid.Parse("FF2380B4-8DE6-4B97-B69A-F3382EBF3DE2");
errors.Add(new EvaluationError(Error3Id, EvaluationErrorType.Error,
DKimEvaluatorRulesResources.IncorrectPublicKeyConfigured,
DKimEvaluatorRulesMarkdownResources.IncorrectPublicKeyConfigured));
}
}
else
{
Guid Error3Id = Guid.Parse("7150FEC3-0464-4CD5-B774-D1D7BCFF7EC5");
errors.Add(new EvaluationError(Error3Id, EvaluationErrorType.Info,
DKimEvaluatorRulesResources.NullPublicKeyConfigured,
DKimEvaluatorRulesMarkdownResources.NullPublicKeyConfigured));
}
return(Task.FromResult(errors));
}
