Systems and methods are disclosed and include receiving, with a peripheral device, a message packet from a portable device, the message packet including an authenticated packet with a de-whitened tone byte inserted therein. The portable device generates first message authentication code (MAC) bytes based on a shared secret key and generates the authenticated packet based on the first MAC bytes, first nonce bytes, and a message byte. The peripheral device validates the message packet in response to determining that the first MAC bytes match second MAC bytes and that the first nonce bytes match second nonce bytes. The peripheral device generates a reconstructed message packet in response to validating the message packet by removing the de-whitened tone byte from the authenticated packet. The communication gateway establishes a communication link between the portable device and the communication gateway in response to receiving the reconstructed message packet.