public void TestArgumentExceptions()
{
var locator = new DkimPublicKeyLocator();
locator.Add("dummy._domainkey.example.org", null);
Assert.Throws <ArgumentNullException> (() => locator.LocatePublicKey("dns/txt", "example.org", "dummy"));
Assert.ThrowsAsync <ArgumentNullException> (async() => await locator.LocatePublicKeyAsync("dns/txt", "example.org", "dummy"));
}
public void TestParseMissingKParamDefaultsToRsa()
{
var locator = new DkimPublicKeyLocator();
locator.Add("no-k-param._domainkey.example.org", "v=DKIM1; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDkHlOQoBTzWRiGs5V6NpP3id Y6Wk08a5qhdR6wy5bdOKb2jLQiY/J16JYi0Qvx/byYzCNb3W91y3FutACDfzwQ/BC/e/8uBsCR+yz1Lx j+PL6lHvqMKrM3rG4hstT5QjvHO9PzoxZyVYLzBfO2EeC3Ip3G+2kryOTIKT+l/K4w3QIDAQAB");
var key = locator.LocatePublicKey("dns/txt", "example.org", "no-k-param");
Assert.IsInstanceOf <RsaKeyParameters> (key);
}
public async Task TestVerifyRfc8463ExampleAsync()
{
var message = MimeMessage.Load(Path.Combine(TestHelper.ProjectDir, "TestData", "dkim", "rfc8463-example.msg"));
var locator = new DkimPublicKeyLocator();
var verifier = new DkimVerifier(locator);
int index;
locator.Add("brisbane._domainkey.football.example.com", "v=DKIM1; k=ed25519; p=11qYAYKxCrfVS/7TyWQHOg7hcvPapiMlrwIaaPcHURo=");
locator.Add("test._domainkey.football.example.com", "v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDkHlOQoBTzWRiGs5V6NpP3idY6Wk08a5qhdR6wy5bdOKb2jLQiY/J16JYi0Qvx/byYzCNb3W91y3FutACDfzwQ/BC/e/8uBsCR+yz1Lxj+PL6lHvqMKrM3rG4hstT5QjvHO9PzoxZyVYLzBfO2EeC3Ip3G+2kryOTIKT+l/K4w3QIDAQAB");
// the last DKIM-Signature uses rsa-sha256
index = message.Headers.LastIndexOf(HeaderId.DkimSignature);
Assert.IsTrue(await verifier.VerifyAsync(message, message.Headers[index]), "Failed to verify rsa-sha256");
// the first DKIM-Signature uses ed25519-sha256
index = message.Headers.IndexOf(HeaderId.DkimSignature);
Assert.IsTrue(await verifier.VerifyAsync(message, message.Headers[index]), "Failed to verify ed25519-sha256");
}
public void TestParseExceptions()
{
var locator = new DkimPublicKeyLocator();
locator.Add("empty._domainkey.example.org", string.Empty);
locator.Add("whitespace._domainkey.example.org", " ");
locator.Add("no-k-or-p-params._domainkey.example.org", "v=DKIM1; x=abc; y=def");
//locator.Add ("no-k-param._domainkey.example.org", "v=DKIM1; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDkHlOQoBTzWRiGs5V6NpP3id Y6Wk08a5qhdR6wy5bdOKb2jLQiY/J16JYi0Qvx/byYzCNb3W91y3FutACDfzwQ/BC/e/8uBsCR+yz1Lx j+PL6lHvqMKrM3rG4hstT5QjvHO9PzoxZyVYLzBfO2EeC3Ip3G+2kryOTIKT+l/K4w3QIDAQAB");
locator.Add("no-p-param._domainkey.example.org", "v=DKIM1; k=rsa");
locator.Add("unknown-algorithm._domainkey.example.org", "v=DKIM1; k=dummy; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDkHlOQoBTzWRiGs5V6NpP3id");
Assert.Throws <ParseException> (() => locator.LocatePublicKey("dns/txt", "example.org", "empty"));
Assert.Throws <ParseException> (() => locator.LocatePublicKey("dns/txt", "example.org", "whitespace"));
Assert.Throws <ParseException> (() => locator.LocatePublicKey("dns/txt", "example.org", "no-k-or-p-params"));
//Assert.Throws<ParseException> (() => locator.LocatePublicKey ("dns/txt", "example.org", "no-k-param"));
Assert.Throws <ParseException> (() => locator.LocatePublicKey("dns/txt", "example.org", "no-p-param"));
Assert.Throws <ParseException> (() => locator.LocatePublicKey("dns/txt", "example.org", "unknown-algorithm"));
}
public void TestSignRfc8463Example()
{
var message = MimeMessage.Load(Path.Combine(TestHelper.ProjectDir, "TestData", "dkim", "rfc8463-example.msg"));
var signer = new DkimSigner(Ed25519PrivateKey, "football.example.com", "brisbane", DkimSignatureAlgorithm.Ed25519Sha256)
{
HeaderCanonicalizationAlgorithm = DkimCanonicalizationAlgorithm.Relaxed,
BodyCanonicalizationAlgorithm = DkimCanonicalizationAlgorithm.Relaxed,
AgentOrUserIdentifier = "@football.example.com"
};
var headers = new string[] { "from", "to", "subject", "date", "message-id", "from", "subject", "date" };
signer.Sign(message, headers);
int index = message.Headers.IndexOf(HeaderId.DkimSignature);
var locator = new DkimPublicKeyLocator();
var verifier = new DkimVerifier(locator);
var dkim = message.Headers[index];
locator.Add("brisbane._domainkey.football.example.com", "v=DKIM1; k=ed25519; p=11qYAYKxCrfVS/7TyWQHOg7hcvPapiMlrwIaaPcHURo=");
locator.Add("test._domainkey.football.example.com", "v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDkHlOQoBTzWRiGs5V6NpP3idY6Wk08a5qhdR6wy5bdOKb2jLQiY/J16JYi0Qvx/byYzCNb3W91y3FutACDfzwQ/BC/e/8uBsCR+yz1Lxj+PL6lHvqMKrM3rG4hstT5QjvHO9PzoxZyVYLzBfO2EeC3Ip3G+2kryOTIKT+l/K4w3QIDAQAB");
Assert.IsTrue(verifier.Verify(message, message.Headers[index]), "Failed to verify ed25519-sha256");
}
