- Patent Title: Protection of an iterative calculation against horizontal attacks
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Application No.: US16041077Application Date: 2018-07-20
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Publication No.: US10977365B2Publication Date: 2021-04-13
- Inventor: Ibrahima Diop , Yanis Linge , Pierre-Yvan Liardet
- Applicant: STMICROELECTRONICS (ROUSSET) SAS
- Applicant Address: FR Rousset
- Assignee: STMICROELECTRONICS (ROUSSET) SAS
- Current Assignee: STMICROELECTRONICS (ROUSSET) SAS
- Current Assignee Address: FR Rousset
- Agency: Seed IP Law Group LLP
- Priority: FR1757037 20170725
- Main IPC: G06F21/00
- IPC: G06F21/00 ; G06F21/55 ; G06F21/60 ; G06F7/72 ; H04L9/00 ; G06F21/72
Abstract:
An iterative calculation is performed on a first number and a second number, while protecting the iterative calculation against side-channel attacks. For each bit of the second number, successively, an iterative calculation routine of the bit of the second number is determined. The determination is made independent of a state of the bit. The determined iterative calculation routine of the bit is executed. A result of the iterative calculation is generated based on a result of the execution of the determined iterative calculation routine of a last bit of the second number.
Public/Granted literature
- US20190034629A1 PROTECTION OF AN ITERATIVE CALCULATION AGAINST HORIZONTAL ATTACKS Public/Granted day:2019-01-31
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