公开(公告)号：US20190179773A1

公开(公告)日：2019-06-13

申请号：US16207817

申请日：2018-12-03

Applicant: STMicroelectronics (Grenoble 2) SAS

Inventor： Dragos Davidescu ,  Nicolas Anquet

IPC: G06F12/14 ,  H04L9/08 ,  H04L9/16 ,  G06F21/72

Abstract: A method for writing a set of information for processing by a processing unit of an integrated circuit in an external memory outside the integrated circuit, includes: generating, within the integrated circuit, an encryption key; for each item of information intended to be written at an address of the external memory, first encrypting the address within the integrated circuit by a first encryption/decryption circuit using the encryption key to obtain an encrypted address; second encrypting the item of information within the integrated circuit using a second encryption/decryption circuit using the encrypted address to obtain an encrypted item of information; and writing the encrypted item of information at the address of the external memory, wherein the external memory is not able to be written twice at a same address during a write process