公开(公告)号：US10673610B2

公开(公告)日：2020-06-02

申请号：US15578033

申请日：2016-05-27

Applicant: GEMALTO SA

Inventor： David Vigilant ,  Sabine Azzi

IPC: H04L9/00 ,  H04L9/06 ,  H04L9/14 ,  H04L9/32 ,  H04L9/30 ,  H03M13/13

Abstract: A system, method and computer-readable storage medium with instructions for protecting an electronic device against fault attack. Given a data represented as an input codeword of a systematic linear error correcting code, the technology provides the secure computation of the output codeword corresponding to the result of the non-linear function applied to this data. Other systems and methods are disclosed.

公开(公告)号：US10277393B2

公开(公告)日：2019-04-30

申请号：US15509310

申请日：2015-08-31

Applicant: GEMALTO SA

Inventor： David Vigilant

IPC: H04L9/00 ,  G06F7/72 ,  G06F7/556 ,  H04L9/30

Abstract: A system, method and computer-readable storage medium with instructions for protecting an electronic device against fault attack. The technology includes operating the electronic device to determine two half-size exponents, dp and dq, from the exponent d; to split the base m into two sub-bases mp and mq determined from the base m; and to iteratively compute a decryption result S by repeatedly multiplying an accumulator A by m, mp, mq or 1 depending on the values of the i-th bit of dp and dq for each iteration I′. Other systems and methods are disclosed.

公开(公告)号：US08850221B2

公开(公告)日：2014-09-30

申请号：US13868079

申请日：2013-04-22

Applicant: Gemalto SA

Inventor： Stephanie Salgado ,  David Vigilant ,  Guillaume Fumaroli

IPC: G06F21/00 ,  H04L9/00 ,  G06F11/10 ,  G06F21/55 ,  H04L9/32 ,  G06F21/52 ,  H04L29/06 ,  G06F21/50

CPC classification number: G06F21/52 ,  G06F11/1004 ,  G06F21/50 ,  G06F21/556 ,  H04L9/003 ,  H04L9/3234 ,  H04L9/3249 ,  H04L63/123 ,  H04L2209/20 ,  H04L2209/34

Abstract: The invention relates to a method for protecting a sensitive operation by checking the integrity of at least a subset of the data manipulated by the sensitive operation. Data to be checked are divided into blocks, an intermediate integrity check value being computed for each block, the intermediate integrity check values being computed in random order. The invention also relates to a cryptographic device wherein at least one sensitive operation of the cryptographic device is protected by a method according to the invention.

Abstract translation: 本发明涉及一种通过检查由敏感操作操纵的数据的至少一个子集的完整性来保护敏感操作的方法。 要检查的数据被分成块，为每个块计算中间完整性检查值，中间完整性检查值以随机顺序计算。 本发明还涉及一种密码装置，其中通过根据本发明的方法保护密码装置的至少一个敏感操作。