FR3111440B1 - Protection d'un algorithme de chiffrement - Google Patents

Protection d'un algorithme de chiffrement Download PDF

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Publication number
FR3111440B1
FR3111440B1 FR2006277A FR2006277A FR3111440B1 FR 3111440 B1 FR3111440 B1 FR 3111440B1 FR 2006277 A FR2006277 A FR 2006277A FR 2006277 A FR2006277 A FR 2006277A FR 3111440 B1 FR3111440 B1 FR 3111440B1
Authority
FR
France
Prior art keywords
encryption algorithm
data
protecting
software
operations
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
FR2006277A
Other languages
English (en)
Other versions
FR3111440A1 (fr
Inventor
Guillaume Reymond
Thomas Sarno
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
STMicroelectronics Rousset SAS
Original Assignee
STMicroelectronics Rousset SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by STMicroelectronics Rousset SAS filed Critical STMicroelectronics Rousset SAS
Priority to FR2006277A priority Critical patent/FR3111440B1/fr
Priority to US17/347,369 priority patent/US20210391977A1/en
Priority to CN202110668105.4A priority patent/CN113806762A/zh
Publication of FR3111440A1 publication Critical patent/FR3111440A1/fr
Application granted granted Critical
Publication of FR3111440B1 publication Critical patent/FR3111440B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
    • H04L9/065—Encryption by serially and continuously modifying data stream elements, e.g. stream cipher systems, RC4, SEAL or A5/3
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09C—CIPHERING OR DECIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHER PURPOSES INVOLVING THE NEED FOR SECRECY
    • G09C1/00—Apparatus or methods whereby a given sequence of signs, e.g. an intelligible text, is transformed into an unintelligible sequence of signs by transposing the signs or groups of signs or by replacing them by others according to a predetermined system
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/60—Protecting data
    • G06F21/602—Providing cryptographic facilities or services
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/60—Protecting data
    • G06F21/64—Protecting data integrity, e.g. using checksums, certificates or signatures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/002—Countermeasures against attacks on cryptographic mechanisms
    • H04L9/003—Countermeasures against attacks on cryptographic mechanisms for power analysis, e.g. differential power analysis [DPA] or simple power analysis [SPA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
    • H04L9/0618—Block ciphers, i.e. encrypting groups of characters of a plain text message using fixed encryption transformation
    • H04L9/0631—Substitution permutation network [SPN], i.e. cipher composed of a number of stages or rounds each involving linear and nonlinear transformations, e.g. AES algorithms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
    • H04L2209/04—Masking or blinding
    • H04L2209/043—Masking or blinding of tables, e.g. lookup, substitution or mapping
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
    • H04L2209/04—Masking or blinding
    • H04L2209/046—Masking or blinding of operations, operands or results of the operations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
    • H04L2209/12—Details relating to cryptographic hardware or logic circuitry
    • H04L2209/122—Hardware reduction or efficient architectures

Abstract

Protection d'un algorithme de chiffrement La présente description concerne un procédé de mise en oeuvre, par un dispositif électronique, d'un algorithme de chiffrement symétrique par rondes de données comportant les étapes mettant en oeuvre : - des opérations de masquage et de démasquage (1011, 1024) de données de façon matérielle ; - des opérations linéaires (1021, 1025) appliquées aux données de façon logicielle ; et - des opérations non linéaires (1023) de façon logicielle ou de façon matérielle. Figure pour l'abrégé : Fig. 3
FR2006277A 2020-06-16 2020-06-16 Protection d'un algorithme de chiffrement Active FR3111440B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR2006277A FR3111440B1 (fr) 2020-06-16 2020-06-16 Protection d'un algorithme de chiffrement
US17/347,369 US20210391977A1 (en) 2020-06-16 2021-06-14 Protection of a cipher algorithm
CN202110668105.4A CN113806762A (zh) 2020-06-16 2021-06-16 加密算法的保护

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2006277 2020-06-16
FR2006277A FR3111440B1 (fr) 2020-06-16 2020-06-16 Protection d'un algorithme de chiffrement

Publications (2)

Publication Number Publication Date
FR3111440A1 FR3111440A1 (fr) 2021-12-17
FR3111440B1 true FR3111440B1 (fr) 2024-02-16

Family

ID=73642961

Family Applications (1)

Application Number Title Priority Date Filing Date
FR2006277A Active FR3111440B1 (fr) 2020-06-16 2020-06-16 Protection d'un algorithme de chiffrement

Country Status (3)

Country Link
US (1) US20210391977A1 (fr)
CN (1) CN113806762A (fr)
FR (1) FR3111440B1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7314108B2 (ja) * 2020-08-27 2023-07-25 株式会社東芝 暗号処理装置、暗号処理方法およびプログラム

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1595357A4 (fr) * 2003-02-06 2006-03-01 Discretix Technologies Ltd Dispositif et procede de manipulation de donnees masquees
EP3475825B1 (fr) * 2016-06-23 2023-01-25 Cryptography Research, Inc. Opérations cryptographiques utilisant un codage de partage non linéaire pour la protection contre les attaques de surveillance externe
US10783279B2 (en) * 2016-09-01 2020-09-22 Atmel Corporation Low cost cryptographic accelerator

Also Published As

Publication number Publication date
FR3111440A1 (fr) 2021-12-17
CN113806762A (zh) 2021-12-17
US20210391977A1 (en) 2021-12-16

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