Patent ID: 9386013
Filing Date: 2016-07-05
CPC Classification: G06F,H04L

Claim Text:
1. A dynamic password authentication method, comprising a server receiving first information sent by a client, and generating second information according to the first information; the server setting every transmission bit in the second information to be in corresponding brightness status or color status to obtain third information, and sending the third information to the client, wherein the third information comprises blinking information of impulse optical signal or image information of dynamic impulse optical signal; the client transforming the third information into an impulse optical signal and outputting the impulse optical signal; a dynamic password device receiving and identifying the impulse optical signal, transforming the impulse optical signal into intermediate information, extracting part or all of the intermediate information, transforming the part or all of the intermediate information into display information for a user to view, and outputting the display information; the dynamic password device receiving trigger information, and generating a first dynamic password according to the intermediate information; the client receiving the first dynamic password input by the user, and sending the first dynamic password to the server; and the server generating a second dynamic password or a set of second dynamic passwords, and verifying whether the first dynamic password is legitimate by the second dynamic password or the set of second dynamic passwords; if the first dynamic password is identical to the second dynamic password or any second dynamic password in the set of second dynamic passwords, verifying the first dynamic password to be legitimate; and if the first dynamic password is not identical to the second dynamic password or any second dynamic password in the set of second dynamic passwords, verifying the first dynamic password to be illegitimate; the server performing a user operation if the first dynamic password is correct.