DE60022974D1 - Vorrichtung zur Ausführung eines Blockverschlüsselungsalgorithmus mit Wiederholungsrunden - Google Patents

Vorrichtung zur Ausführung eines Blockverschlüsselungsalgorithmus mit Wiederholungsrunden

Info

Publication number
DE60022974D1
DE60022974D1 DE60022974T DE60022974T DE60022974D1 DE 60022974 D1 DE60022974 D1 DE 60022974D1 DE 60022974 T DE60022974 T DE 60022974T DE 60022974 T DE60022974 T DE 60022974T DE 60022974 D1 DE60022974 D1 DE 60022974D1
Authority
DE
Germany
Prior art keywords
executing
encryption algorithm
block encryption
rounds
repetition
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.)
Expired - Lifetime
Application number
DE60022974T
Other languages
English (en)
Other versions
DE60022974T2 (de
Inventor
Herve Chabanne
Nicolas Tissot
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.)
Idemia Identity and Security France SAS
Original Assignee
Sagem SA
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 Sagem SA filed Critical Sagem SA
Publication of DE60022974D1 publication Critical patent/DE60022974D1/de
Application granted granted Critical
Publication of DE60022974T2 publication Critical patent/DE60022974T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • H04L9/0618—Block ciphers, i.e. encrypting groups of characters of a plain text message using fixed encryption transformation
    • H04L9/0625—Block ciphers, i.e. encrypting groups of characters of a plain text message using fixed encryption transformation with splitting of the data block into left and right halves, e.g. Feistel based algorithms, DES, FEAL, IDEA or KASUMI
    • 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]
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2207/00—Indexing scheme relating to methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F2207/72—Indexing scheme relating to groups G06F7/72 - G06F7/729
    • G06F2207/7219—Countermeasures against side channel or fault attacks
    • 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
    • H04L2209/24—Key scheduling, i.e. generating round keys or sub-keys for block encryption

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Storage Device Security (AREA)
DE2000622974 1999-12-15 2000-12-14 Vorrichtung zur Ausführung eines Blockverschlüsselungsalgorithmus mit Wiederholungsrunden Expired - Lifetime DE60022974T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9915845A FR2802741B1 (fr) 1999-12-15 1999-12-15 Dispositif mettant en oeuvre un algorithme de chiffrage par bloc a repetition de rondes
FR9915845 1999-12-15

Publications (2)

Publication Number Publication Date
DE60022974D1 true DE60022974D1 (de) 2005-11-10
DE60022974T2 DE60022974T2 (de) 2006-07-27

Family

ID=9553307

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2000622974 Expired - Lifetime DE60022974T2 (de) 1999-12-15 2000-12-14 Vorrichtung zur Ausführung eines Blockverschlüsselungsalgorithmus mit Wiederholungsrunden

Country Status (4)

Country Link
EP (1) EP1109350B1 (de)
DE (1) DE60022974T2 (de)
ES (1) ES2250088T3 (de)
FR (1) FR2802741B1 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9323955B2 (en) 2000-12-21 2016-04-26 Gemalto Sa Method for protecting a logic or mathematical operator installed in an electronic module with a microprocessor as well as the associated embedded electronic module and the system
FR2820577B1 (fr) 2001-02-08 2003-06-13 St Microelectronics Sa Procede securise de calcul cryptographique a cle secrete et composant mettant en oeuvre un tel procede
JP3851115B2 (ja) * 2001-06-28 2006-11-29 富士通株式会社 暗号回路
US8582774B2 (en) 2002-03-07 2013-11-12 Gemalto Sa Method for making safe an electronic cryptography assembly with a secret key
GB0211812D0 (en) * 2002-05-23 2002-07-03 Koninkl Philips Electronics Nv S-box encryption in block cipher implementations
US7403620B2 (en) 2002-07-02 2008-07-22 Stmicroelectronics S.A. Cyphering/decyphering performed by an integrated circuit
EP1457858A1 (de) * 2003-03-14 2004-09-15 SCHLUMBERGER Systèmes Methode um ein elektronisches System zu sichern, das ein Kryptoprocessor enthält
FR2875318A1 (fr) * 2004-09-15 2006-03-17 St Microelectronics Sa Protection d'un algorithme des
EP2293487A1 (de) * 2009-09-08 2011-03-09 Thomson Licensing Verfahren zur Diversifikation der Runden eines Verschlüsselungalgorithmus
US9391770B2 (en) 2012-06-12 2016-07-12 Tigerspike Products, Pte. Ltd Method of cryption

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3600454B2 (ja) * 1998-08-20 2004-12-15 株式会社東芝 暗号化・復号装置、暗号化・復号方法、およびそのプログラム記憶媒体
DE69932740T2 (de) * 1998-12-30 2006-12-07 Nokia Corp. Verfahren und vorrichtung zur kryptographischen datenverarbeitung
NL1011544C1 (nl) * 1998-12-30 2000-07-03 Koninkl Kpn Nv Werkwijze en inrichting voor het cryptografisch bewerken van data.

Also Published As

Publication number Publication date
ES2250088T3 (es) 2006-04-16
EP1109350A1 (de) 2001-06-20
FR2802741A1 (fr) 2001-06-22
FR2802741B1 (fr) 2003-10-31
EP1109350B1 (de) 2005-10-05
DE60022974T2 (de) 2006-07-27

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: SAGEM SECURITE, PARIS, FR

8328 Change in the person/name/address of the agent

Representative=s name: BOSCH JEHLE PATENTANWALTSGESELLSCHAFT MBH, 80639 M