2.2.2.3.3 Connection Response

The Connection Response message is used for the host to respond with a connection response message that includes device information. Only the Result is sent if the Result is anything other than PENDING.

0	1	2	3	4	5	6	7	8	9	1 0	1	2	3	4	5	6	7	8	9	2 0	1	2	3	4	5	6	7	8	9	3 0	1
Result								HMACSize																Nonce
MessageFragmentSize
PublicKeyXLength																PublicKeyX (variable)
...
...
PublicKeyYLength																PublicKeyY (variable)
...
...

Result (1 byte): The result of the connection request, which can be one of the following values.

Value	Meaning
0	Success
1	Pending
2	Failure_Authentication
3	Failure_NotAllowed

HMACSize (2 bytes): The expected size of HMAC (see Encryption section 3.1.3.1 for details).

Nonce (8 bytes): Random values (see section 3.1.3.1 Encryption for details).

MessageFragmentSize (4 bytes): The maximum size of a single message fragment (Fixed Value of 16384 (bits)).

PublicKeyXLength (2 bytes): The length of PublicKeyX, which is sent only if the connection is successful.

PublicKeyX (variable): A fixed-length key that is based on the curve type from connect request, which is sent only if the connection is successful. This is the X component of the key.

PublicKeyYLength (2 bytes): The length of PublicKeyY, which is sent only if the connection is successful.

PublicKeyY (variable): A fixed-length key that is based on the curve type from connect request, which is sent only if the connection is successful. This is the Y component of the key.