公开(公告)号：FR2824209A1

公开(公告)日：2002-10-31

申请号：FR0105815

申请日：2001-04-30

Applicant: ST MICROELECTRONICS SA

Inventor： LIARDET PIERRE YVES ,  ROMAIN FABRICE

IPC: G06F7/72 ,  G06F21/55 ,  G09C1/00 ,  H04L9/18 ,  G06K19/07

Abstract: The invention concerns a method for encrypting, with a random quantity (r), a calculation using at least a modular operation (3), the method consisting in multiplying a first modulo (n) by said random quantity, in taking as modulo of the operation, the result (m) of said multiplication and in carrying out a modular reduction of the result of the operation, on the basis of the first modulo (n).

公开(公告)号：FR2824209B1

公开(公告)日：2003-08-29

申请号：FR0105815

申请日：2001-04-30

Applicant: ST MICROELECTRONICS SA

Inventor： LIARDET PIERRE YVES ,  ROMAIN FABRICE

IPC: G06F7/72 ,  G06F21/55 ,  G09C1/00 ,  H04L9/18 ,  G06K19/07

Abstract: The invention concerns a method for encrypting, with a random quantity (r), a calculation using at least a modular operation (3), the method consisting in multiplying a first modulo (n) by said random quantity, in taking as modulo of the operation, the result (m) of said multiplication and in carrying out a modular reduction of the result of the operation, on the basis of the first modulo (n).