public void SetEncodedValue_KnownHeaders_ThrowIf_IncorrectValue(SetValueMethod method)
{
if (method == SetValueMethod.AddShortcut)
{
return;
}
var writer = new CborWriter();
writer.WriteNull();
byte[] encodedNullValue = writer.Encode();
var map = new CoseHeaderMap();
// only accepts int or tstr
Assert.Throws <ArgumentException>("value", () => SetEncodedValue(map, CoseHeaderLabel.Algorithm, encodedNullValue, method));
// [ +label ] (non-empty array)
Assert.Throws <ArgumentException>("value", () => SetEncodedValue(map, CoseHeaderLabel.CriticalHeaders, encodedNullValue, method));
writer.Reset();
writer.WriteStartArray(0);
writer.WriteEndArray();
Assert.Throws <ArgumentException>("value", () => SetEncodedValue(map, CoseHeaderLabel.CriticalHeaders, writer.Encode(), method));
// tstr / uint
Assert.Throws <ArgumentException>("value", () => SetEncodedValue(map, CoseHeaderLabel.ContentType, encodedNullValue, method));
// bstr
Assert.Throws <ArgumentException>("value", () => SetEncodedValue(map, CoseHeaderLabel.KeyIdentifier, encodedNullValue, method));
}
static ReadOnlyMemory <byte> EncodeAndReset(CborWriter writer)
{
ReadOnlyMemory <byte> encodedValue = writer.Encode();
writer.Reset();
return(encodedValue);
}
public void VerifyThrowsIfIncorrectIntegerAlgorithm(int incorrectAlg)
{
CoseSigner signer = GetCoseSigner(DefaultKey, DefaultHash);
// Template header
signer.ProtectedHeaders.Add(new CoseHeaderLabel(42), 42);
string hexTemplateHeaders = "47A20126182A182A";
string hexCborMessage = Sign(s_sampleContent, signer).ByteArrayToHex();
// Creaft a encoded protected map that replaces the "Template value" map.
var writer = new CborWriter();
writer.WriteStartMap(1);
writer.WriteInt32(1);
writer.WriteInt32(incorrectAlg);
writer.WriteEndMap();
byte[] newMap = writer.Encode();
writer.Reset();
writer.WriteByteString(newMap);
string hexNewMap = writer.Encode().ByteArrayToHex();
hexCborMessage = ReplaceFirst(hexCborMessage, hexTemplateHeaders, hexNewMap);
CoseMessage msg = Decode(ByteUtils.HexToByteArray(hexCborMessage));
Assert.Throws <CryptographicException>(() => Verify(msg, DefaultKey, s_sampleContent));
}
public static void Reset_NonTrivialWriter_HappyPath()
{
// Set up: build a nontrivial writer state.
// Favor maps and Ctap2 canonicalization since
// since that utilizes most of the moving parts.
var writer = new CborWriter(conformanceMode: CborConformanceMode.Ctap2Canonical);
for (int i = 0; i < 10; i++)
{
if (i % 2 == 0)
{
writer.WriteStartMap(100);
}
else
{
writer.WriteStartArray(100);
}
}
writer.WriteStartMap(3);
writer.WriteInt32(1); // key
writer.WriteInt32(2); // value
writer.WriteInt32(-1); // key
writer.WriteInt32(1); // value
// End set up
Assert.Equal(11, writer.CurrentDepth);
Assert.True(writer.BytesWritten > 11, "must have written a nontrivial number of bytes to the buffer");
writer.Reset();
Assert.Equal(0, writer.CurrentDepth);
Assert.Equal(0, writer.BytesWritten);
// Write an object from scratch and validate that it is correct
writer.WriteInt32(42);
Assert.Equal(new byte[] { 0x18, 0x2a }, writer.Encode());
}
public void WriteCoseKey(ECDsaCosePublicKey publicKey)
{
_ctap2Writer.Reset();
_ctap2Writer.WriteECParametersAsCosePublicKey(publicKey.ECParameters, publicKey.HashAlgorithmName);
_ctap2Writer.Encode(_writeBuffer);
}