Patent ID: 9003516
Filing Date: 2015-04-07
Classification: G06Q,G07F

Abstract:
1. A method implemented at a mobile device, the method comprising: receiving, over a wireless link, a challenge comprising a public key stored by an authentication device, the mobile device receiving the challenge from an untrusted reader device in communication with the authentication device, the reader device being configured to wirelessly communicate with the mobile device over the wireless link, the mobile device, the reader device, and the authentication device being physically separate devices, the reader device and the authentication device being in wireless communication with each other, the mobile device comprising a user mobile communication device configured to send and receive messages; receiving user-entered authentication information; encrypting the user-entered authentication information using the public key; transmitting for receipt by the authentication device, over the wireless link and in response to the challenge, the encrypted user-entered authentication information; and receiving a verification signal sent by the authentication device over the wireless link once the encrypted user-entered authentication information is decrypted using a private key stored by the authentication device, and is determined to match authentication information previously stored by the authentication device; in response to receiving the verification signal, the mobile device being enabled to encrypt or digitally sign a message for transmission from the mobile device, or decrypt or verify a message received by the mobile device.