| 摘要 |
<p>A system and method are provided for authenticating a first device to a second device. This involves determining, at the directory, a secret key and a first set of images by communicating with the first device; receiving, at the directory, a transaction request from the second device to authenticate the first device; and generating, at the directory, a tag using said secret key and first information associated with said transaction request. This also involves selecting a second set of images from said first set of images according to said tag, and sending said second set of images from the directory to the second device. Moreover, using said first set of images, said secret key, and said information associated with said transaction request, the first device may select a third set of images that, when sent to the second device, may be used at the second device, in comparison to said second set of images, to authenticate the first device.</p> |
