公开(公告)号：US10721081B2

公开(公告)日：2020-07-21

申请号：US15740781

申请日：2016-06-28

Applicant: OBERTHUR TECHNOLOGIES

Inventor： Emmanuelle Dottax ,  Francis Chamberot ,  Bruno Climen

IPC: H04L9/32 ,  G06Q20/40 ,  G06Q20/38 ,  G06Q20/34 ,  H04L9/14

Abstract: An authentication method is performed between a first party and a second party. The method includes: i) determining a challenge; ii) sending the challenge to the second party; receiving a response from the second party including a second cryptogram; computing a first cryptogram using the challenge and the key of the first party; determining if the first cryptogram matches the second cryptogram received from the second party. If the first cryptogram does not match the second cryptogram, the method further includes performing a computation using the first cryptogram and the second cryptogram; and comparing a result of the computation with a stored set of results to recover a first data element carried by the second cryptogram.