do the opCode

src/main/java/com/josh/vku2f/CTAP2.java

@@ -597,7 +597,10 @@ public class CTAP2 extends Applet implements ExtendedLength {
 			cborEncoder.writeRawByte((byte) 0x03);
 				// Start to build into the cbor array manually, to avoid arrayCopy
 				// Create a map with 3 things
-	            cborEncoder.startMap((short) 4);
+				if(authenticatorMakeCredential.opCode==OpCode.GET_IDENTITY_CREDENTIAL)
+	                cborEncoder.startMap((short) 4);
+				else
+					cborEncoder.startMap((short) 3);
 				// Add the alg label
 				cborEncoder.encodeTextString(Utf8Strings.UTF8_ALG, (short) 0, (short) 3);
 				// Add the actual algorithm - -7 is 6 as a negative
@@ -619,12 +622,14 @@ public class CTAP2 extends Applet implements ExtendedLength {
 				// Supposedly we need an array here
 				cborEncoder.startArray((short) 1);
 				cborEncoder.encodeByteString(attestationKeyPair.x509cert, (short) 0, attestationKeyPair.x509len);
-				// add extension label 這邊是暫時找個地方放
-				cborEncoder.encodeTextString(Utf8Strings.UTF8_EXTENSIONS, (short) 0, (short) Utf8Strings.UTF8_EXTENSIONS.length);
-				// add extension element
-				cborEncoder.startArray((short) 2);
-				cborEncoder.encodeByteString(idSecret.hmac, (short) 0, (short) idSecret.hmac.length);
-				cborEncoder.encodeByteString(idSecret.encryptedCx, (short) 0, (short) idSecret.encryptedCx.length);
+				if(authenticatorMakeCredential.opCode == OpCode.GET_IDENTITY_CREDENTIAL){
+					// add extension label 這邊是暫時找個地方放
+					cborEncoder.encodeTextString(Utf8Strings.UTF8_EXTENSIONS, (short) 0, (short) Utf8Strings.UTF8_EXTENSIONS.length);
+					// add extension element
+					cborEncoder.startArray((short) 2);
+					cborEncoder.encodeByteString(idSecret.hmac, (short) 0, (short) idSecret.hmac.length);
+					cborEncoder.encodeByteString(idSecret.encryptedCx, (short) 0, (short) idSecret.encryptedCx.length);
+				}
 
 			// We're actually done, send this out
 			sendLongChaining(apdu, cborEncoder.getCurrentOffset());