公开(公告)号：US20230281305A1

公开(公告)日：2023-09-07

申请号：US18159800

申请日：2023-01-26

申请人： COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES

发明人： Olivier SAVRY ,  Ezinam-Bertrand TALAKI

IPC分类号： G06F21/55 ,  G06F21/60

CPC分类号： G06F21/556 ,  G06F21/602

摘要： A method including generating an initialization vector, then producing a new mask using the generated initialization vector and using a secret key, masking a datum to be written to an internal cache memory using the constructed new mask, to obtain a masked datum, storing, in a given word of the internal cache memory, the masked datum and the generated initialization vector, and unmasking the masked datum, this including extracting the initialization vector contained in the word, reconstructing the mask using the extracted initialization vector and using the secret key, then unmasking the masked datum using the new mask thus reconstructed.