[BUG] COSE Key Encoding is Invalid

[ben-krieger]

Describe the bug
When encoding a COSE key, the key type is not set. From the COSE spec (https://datatracker.ietf.org/doc/html/rfc8152#section-7), the key type (label 1) is required:

The element "kty" is a required element in a COSE_Key map.

To Reproduce
Perform DI with COSE key encoding selected. In the SetCredentials message, see that the manufacturer public key's body decodes to:

{
  -1: 2,
  -2: h'604DB2D960A7956C9CEEDB86829305437AC50BF2AEE118FD49FD969674FDCF5ED09F64AC9414DF9CC7CCD7016BAC9F54',
  -3: h'0080F0C0E50F803702D0741ABD8248AD1255991CF2A5B92082E3E5578ADAD8D99BC82002FCF3E136EF5BEC21697BC23A69'
}

Expected behavior
COSE Key should have kty set. Since only EC2 keys are supported, this means:

{
  1: 2,
  -1: 2,
  -2: h'604DB2D960A7956C9CEEDB86829305437AC50BF2AEE118FD49FD969674FDCF5ED09F64AC9414DF9CC7CCD7016BAC9F54',
  -3: h'0080F0C0E50F803702D0741ABD8248AD1255991CF2A5B92082E3E5578ADAD8D99BC82002FCF3E136EF5BEC21697BC23A69'
}

Additional context
The code that needs to be fixed is here:

pri-fidoiot/protocol/src/main/java/org/fidoalliance/fdo/protocol/StandardCryptoService.java

Lines 304 to 315 in 47e699b

	case COSEKEY: {
	final ECPublicKey ec = (ECPublicKey) chain[0].getPublicKey();
	final byte[] x = ec.getW().getAffineX().toByteArray();
	final byte[] y = ec.getW().getAffineY().toByteArray();
	final CoseKey coseKey = new CoseKey();
	coseKey.setX(x);
	coseKey.setY(y);
	coseKey.setCurve(new AlgorithmFinder().getCoseKeyCurve(keyType));
	ownerKey.setBody(AnyType.fromObject(coseKey));
	}