public static void CreateFromKeyIdentifierPreservesLeadingZeros()
{
ReadOnlySpan <byte> encoded = new byte[]
{
// SEQUENCE( [0](
0x30, 0x16, 0x80, 0x14,
// keyId
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x01, 0x00,
};
ReadOnlySpan <byte> keyId = encoded.Slice(4);
X509AuthorityKeyIdentifierExtension akid;
// From ROSpan
akid = X509AuthorityKeyIdentifierExtension.CreateFromSubjectKeyIdentifier(keyId);
AssertExtensions.SequenceEqual(encoded, akid.RawData);
AssertExtensions.SequenceEqual(keyId, akid.KeyIdentifier.GetValueOrDefault().Span);
// From array
akid = X509AuthorityKeyIdentifierExtension.CreateFromSubjectKeyIdentifier(keyId.ToArray());
AssertExtensions.SequenceEqual(encoded, akid.RawData);
AssertExtensions.SequenceEqual(keyId, akid.KeyIdentifier.GetValueOrDefault().Span);
// From SKI
var skid = new X509SubjectKeyIdentifierExtension(keyId, critical: false);
akid = X509AuthorityKeyIdentifierExtension.CreateFromSubjectKeyIdentifier(skid);
AssertExtensions.SequenceEqual(encoded, akid.RawData);
AssertExtensions.SequenceEqual(keyId, akid.KeyIdentifier.GetValueOrDefault().Span);
}
public static void CreateFromSubjectKeyIdentifier_Validation()
{
Assert.Throws <ArgumentNullException>(
"subjectKeyIdentifier",
() => X509AuthorityKeyIdentifierExtension.CreateFromSubjectKeyIdentifier(
(X509SubjectKeyIdentifierExtension)null));
Assert.Throws <ArgumentNullException>(
"subjectKeyIdentifier",
() => X509AuthorityKeyIdentifierExtension.CreateFromSubjectKeyIdentifier(
(byte[])null));
}
public static void CreateFromLargeKeyIdentifier()
{
byte[] keyId = new byte[128];
X509AuthorityKeyIdentifierExtension akid =
X509AuthorityKeyIdentifierExtension.CreateFromSubjectKeyIdentifier(keyId);
AssertExtensions.SequenceEqual(keyId, akid.KeyIdentifier.GetValueOrDefault().Span);
byte[] rawData = akid.RawData;
AssertExtensions.SequenceEqual(keyId, rawData.AsSpan(6));
Assert.Equal("308183808180", rawData.AsSpan(0, 6).ByteArrayToHex());
}
