TW200742383A - Encryption protection method - Google Patents

Encryption protection method

Info

Publication number
TW200742383A
TW200742383A TW095142013A TW95142013A TW200742383A TW 200742383 A TW200742383 A TW 200742383A TW 095142013 A TW095142013 A TW 095142013A TW 95142013 A TW95142013 A TW 95142013A TW 200742383 A TW200742383 A TW 200742383A
Authority
TW
Taiwan
Prior art keywords
cipher
true
mask
subkeys
key
Prior art date
Application number
TW095142013A
Other languages
English (en)
Other versions
TWI418197B (zh
Inventor
Vincent Dupaquis
Michel Douguet
Original Assignee
Atmel Corp
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 Atmel Corp filed Critical Atmel Corp
Publication of TW200742383A publication Critical patent/TW200742383A/zh
Application granted granted Critical
Publication of TWI418197B publication Critical patent/TWI418197B/zh

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K1/00—Secret communication
    • 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
    • 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
    • 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
    • H04L2209/08—Randomization, e.g. dummy operations or using noise
    • 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)
TW095142013A 2005-11-21 2006-11-14 加密保護方法 TWI418197B (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0511768A FR2893796B1 (fr) 2005-11-21 2005-11-21 Procede de protection par chiffrement
US11/358,979 US7848515B2 (en) 2005-11-21 2006-02-22 Encryption protection method

Publications (2)

Publication Number Publication Date
TW200742383A true TW200742383A (en) 2007-11-01
TWI418197B TWI418197B (zh) 2013-12-01

Family

ID=36602442

Family Applications (1)

Application Number Title Priority Date Filing Date
TW095142013A TWI418197B (zh) 2005-11-21 2006-11-14 加密保護方法

Country Status (8)

Country Link
US (1) US7848515B2 (zh)
EP (1) EP1955465B1 (zh)
JP (1) JP4990908B2 (zh)
KR (1) KR101345083B1 (zh)
CN (1) CN101371480B (zh)
FR (1) FR2893796B1 (zh)
TW (1) TWI418197B (zh)
WO (1) WO2007102898A2 (zh)

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Also Published As

Publication number Publication date
EP1955465B1 (en) 2019-09-11
KR101345083B1 (ko) 2013-12-26
KR20080073345A (ko) 2008-08-08
WO2007102898A3 (en) 2008-04-17
CN101371480B (zh) 2013-08-21
US20080019503A1 (en) 2008-01-24
FR2893796B1 (fr) 2008-01-04
EP1955465A2 (en) 2008-08-13
EP1955465A4 (en) 2016-11-30
CN101371480A (zh) 2009-02-18
US7848515B2 (en) 2010-12-07
JP4990908B2 (ja) 2012-08-01
JP2009516964A (ja) 2009-04-23
FR2893796A1 (fr) 2007-05-25
TWI418197B (zh) 2013-12-01
WO2007102898A2 (en) 2007-09-13

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