公开(公告)号：US20170132435A1

公开(公告)日：2017-05-11

申请号：US15344067

申请日：2016-11-04

Applicant: INGENICO GROUP

Inventor： Christian ROLIN ,  Laurent MULLER ,  Mohammed BELLAHCENE ,  Jessica ROYER ,  Jean-Christophe POMMARET

IPC: G06F21/78 ,  G06F12/14 ,  H04L9/08 ,  G06F21/62 ,  G06F21/64 ,  H04L9/32

CPC classification number: G06F21/78 ,  G06F12/1408 ,  G06F21/62 ,  G06F21/64 ,  H04L9/0861 ,  H04L9/0866 ,  H04L9/3236

Abstract: A method for the secured recording of data, implemented in a data-recording device having a first non-secured memory and a second secured memory, is disclosed. The method has the steps of: obtaining a derived key corresponding to the data in the second memory from a root key recorded in the second memory; encrypting data using the derived key, delivering encrypted data; recording the encrypted data in the first memory; determining a hash imprint of said data; recording said hash imprint in a hash file recorded in the first memory; recording a general hash imprint, representing the content of the hash file comprising said hash imprint, in the second memory; and eliminating the data in the second memory.