Method and mobile device for generating a data authentication key

摘要

The invention relates to a method for generating a data authentication key for allowing data communication over a wireless channel between a first mobile device and a second mobile device, comprising: associating said mobile devices to each other by means of said key. The invention comprises: allowing a shared physical or mechanical condition to be applied generally simultaneously upon said devices; detecting, in said first mobile device, said condition; defining, in said first mobile device, said authentication key based on the detected condition; and transmitting said key to said second mobile device. The invention also relates to a mobile device configured for generating a data authentication key for allowing data communication over a wireless channel to a further mobile device.

主权项

1. A method in a system comprising a first mobile device and a second mobile device, comprising:
detecting, in said first mobile device, a physical or mechanical condition; defining, by said first mobile device, an authentication code based on the detected condition; transmitting, from said first mobile device, said defined authentication code to said second mobile device; receiving at said second mobile device said authentication code defined by said first mobile device; storing in a memory of the second mobile device said received authentication code defined by said first mobile device; transmitting, from said first mobile device to said second mobile device, an authentication request message; receiving, at the second mobile device, the transmitted authentication request message; in response to receiving the authentication request message, the second mobile device a) retrieving from said memory said received authentication code transmitted by said first mobile device and b) transmitting to the first mobile device an authentication response message comprising said retrieved authentication code; the first mobile device receiving the authentication response message transmitted by the second mobile device; and in response to receiving the authentication response message, the first mobile device authenticating the second mobile device using the authentication code defined by the first mobile device and the authentication code included in the authentication response message transmitted by the second mobile device, wherein authenticating the second mobile device comprises comparing the authentication code defined by the first mobile device with the authentication code included in the authentication response message.