SECURE EXCHANGE OF AN AUTHENTICATION TOKEN

摘要

A method and system for securely exchanging an authentication token. In one embodiment, the communication system includes a first transmitter in communication with a first receiver and a second transmitter in communication with a second receiver. A comparator is in communication with the first receiver and the second transmitter. An output device is in communication with the second receiver. The user transmits user information to the first receiver over a first communication channel. The first receiver receives this user information, and subsequently transmits a first verification message to the second receiver over a second communication channel. In response to the first verification message, the user sends a second verification message back to the first receiver over the first communication channel. The first receiver receives this first verification message and the comparator determines authenticity by comparing the first verification message transmitted over the second communication channel with the second verification message received over the first communication channel.