BRPI0417450A - método e sistema para prestar uma função de processamento de sinal digital e dispositivo de execução - Google Patents

método e sistema para prestar uma função de processamento de sinal digital e dispositivo de execução

Info

Publication number
BRPI0417450A
BRPI0417450A BRPI0417450-0A BRPI0417450A BRPI0417450A BR PI0417450 A BRPI0417450 A BR PI0417450A BR PI0417450 A BRPI0417450 A BR PI0417450A BR PI0417450 A BRPI0417450 A BR PI0417450A
Authority
BR
Brazil
Prior art keywords
functions
function
signal processing
execution device
digital signal
Prior art date
Application number
BRPI0417450-0A
Other languages
English (en)
Inventor
Paulus M H M A Gorissen
Joachim A Trescher
Antonius A M Staring
Willem C Mallon
Menno A Treffers
Original Assignee
Koninkl Philips Electronics Nv
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 Koninkl Philips Electronics Nv filed Critical Koninkl Philips Electronics Nv
Publication of BRPI0417450A publication Critical patent/BRPI0417450A/pt

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
    • 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
    • H04L9/06—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
    • H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
    • H04L2209/16—Obfuscation or hiding, e.g. involving white box

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Storage Device Security (AREA)
  • Stored Programmes (AREA)
  • Computer And Data Communications (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

"MéTODO E SISTEMA PARA PRESTAR UMA FUNçãO DE PROCESSAMENTO DE SINAL DIGITAL E DISPOSITIVO DE EXECUçãO". Em um sistema (600), um servidor (610) presta uma função de processamento de sinal digital <sym> para um dispositivo de execução (620) em uma forma obscurecida. A função <sym> inclui uma função em cascata de funções de processamento de sinal<sym>~ 1~ 1 <243> <sym> <242> N para a fórmula (I). O servidor inclui um processador (612) para selecionar uma série de 2N permutações inversíveis P~ i,i~ 1 <243> <sym> <242> 2N; calculando uma série de N funções g,, onde g, é funcionalmente equivalente à fórmula (II) para 1 <243> <sym> <242> N; e calcular uma sén'e de N-1 funções h~ i~, onde h~ i~ é funcionalmente equivalente à fórmula (III) para 2<243> <sym> 2N. O servidor inclui dispositivos (614) para equipar o dispositivo de execução com uma função em cascata de dispositivo de execução que inclui a fórmula (IV) onde y~ 1~,...,y~ N~ são parâmetros de função para a fórmula (V) e dispositivos (616) para prestar as funções g~ 1~,...,g~ N~ para o dispositivo de execução. O dispositivo de execução inclui recursos (626) para obter as funções g~ 1~, .... g~ N~ e um processador (622) para carregar a função em cascata do dispositivo de execução e aplicar a função em cascata do dispositivo de execução às funções g~ 1~,...,g~ N~ (ED,(g~ 1~,...,g~ N~)).
BRPI0417450-0A 2003-12-11 2004-11-30 método e sistema para prestar uma função de processamento de sinal digital e dispositivo de execução BRPI0417450A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP03104643 2003-12-11
PCT/IB2004/052607 WO2005060147A1 (en) 2003-12-11 2004-11-30 Block ciphering system, using permutations to hide the core ciphering function of each encryption round

Publications (1)

Publication Number Publication Date
BRPI0417450A true BRPI0417450A (pt) 2007-04-10

Family

ID=34684571

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0417450-0A BRPI0417450A (pt) 2003-12-11 2004-11-30 método e sistema para prestar uma função de processamento de sinal digital e dispositivo de execução

Country Status (10)

Country Link
US (1) US8023651B2 (pt)
EP (1) EP1712032B1 (pt)
JP (2) JP4884976B2 (pt)
KR (1) KR101079565B1 (pt)
CN (1) CN1890914B (pt)
AT (1) ATE509442T1 (pt)
BR (1) BRPI0417450A (pt)
MX (1) MXPA06006464A (pt)
RU (1) RU2370897C2 (pt)
WO (1) WO2005060147A1 (pt)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8023651B2 (en) 2003-12-11 2011-09-20 Irdeto B.V. Block ciphering system, using permutations to hide the core ciphering function of each encryption round
KR20060107282A (ko) * 2005-04-07 2006-10-13 엘지전자 주식회사 데이터 재생방법, 데이터 기록재생 플레이어 및 데이터전송방법
JP5249053B2 (ja) * 2006-03-10 2013-07-31 イルデト・コーポレート・ビー・ヴイ データ処理システムの完全性
JP2007298847A (ja) * 2006-05-02 2007-11-15 Kddi Corp プログラム内データの保護装置、保護方法およびプログラム
JP5113169B2 (ja) * 2006-07-12 2013-01-09 イルデト・コーポレート・ビー・ヴイ 暗号関数を難読化する方法およびシステム
EP2153365A1 (en) * 2007-05-22 2010-02-17 Koninklijke Philips Electronics N.V. Data security
EP2173056A1 (fr) * 2008-09-04 2010-04-07 Gemplus Procédé de contre-mesure dans un composant électronique mettant en ouvre un algorithme de cryptographie à clef secrète
EP2393292A1 (en) * 2010-06-01 2011-12-07 Nagravision S.A. A method and apparatus for decrypting encrypted content
EP2405650A1 (en) * 2010-07-09 2012-01-11 Nagravision S.A. A method for secure transfer of messages
US9111072B1 (en) 2011-08-23 2015-08-18 Tectonic Labs, LLC Anti-reverse engineering unified process
CN104919750B (zh) * 2012-12-21 2017-06-06 皇家飞利浦有限公司 计算关于函数‑输入值的数据函数的计算设备和方法
CN103595539B (zh) * 2013-11-26 2016-08-24 南开大学 保留格式的数值型个人识别信息的加密方法
WO2015091583A1 (en) * 2013-12-20 2015-06-25 Koninklijke Philips N.V. Operator lifting in cryptographic algorithm
US9405919B2 (en) * 2014-03-11 2016-08-02 Qualcomm Incorporated Dynamic encryption keys for use with XTS encryption systems employing reduced-round ciphers
US10184974B2 (en) 2015-09-22 2019-01-22 Raytheon Company Systems and methods for determining whether a circuit is operating properly
US11070358B2 (en) 2015-12-15 2021-07-20 Koninklijke Philips N.V. Computation device and method
CN107517206A (zh) * 2017-08-18 2017-12-26 北京北信源软件股份有限公司 一种安全通信的方法、装置、可读介质和存储控制器

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Publication number Priority date Publication date Assignee Title
FR2582174B1 (fr) * 1985-05-15 1990-03-09 Thomson Csf Dispositif de chiffrement par substitutions-permutations
RU2006934C1 (ru) * 1991-07-01 1994-01-30 Романов Владимир Федорович Устройство для вычисления комбинаторных функций
US5699512A (en) 1994-04-28 1997-12-16 Nippon Telegraph And Telephone Corp. Software analysis protection method for changing the software pattern on the memory of a user terminal
JP3463963B2 (ja) 1994-04-28 2003-11-05 日本電信電話株式会社 ソフトウェア解析保護方法
US5838794A (en) * 1996-01-11 1998-11-17 Teledyne Electronic Technologies Method and apparatus for inter-round mixing in iterated block substitution systems
US5949884A (en) * 1996-11-07 1999-09-07 Entrust Technologies, Ltd. Design principles of the shade cipher
US6668325B1 (en) 1997-06-09 2003-12-23 Intertrust Technologies Obfuscation techniques for enhancing software security
WO1999007103A1 (en) * 1997-07-29 1999-02-11 Lucent Technologics Inc. Methods and apparatus for enhanced cmea employing enhanced transformations
EP1062755A2 (en) * 1997-08-08 2000-12-27 Jonathan Stiebel New operation for key insertion with folding
JP2001067270A (ja) 1999-08-27 2001-03-16 Nippon Telegr & Teleph Corp <Ntt> コンテンツ共有管理システムおよびコンテンツ保護方法およびこの方法を記録した記録媒体
CA2327911A1 (en) * 2000-12-08 2002-06-08 Cloakware Corporation Obscuring functions in computer software
US8023651B2 (en) 2003-12-11 2011-09-20 Irdeto B.V. Block ciphering system, using permutations to hide the core ciphering function of each encryption round

Also Published As

Publication number Publication date
RU2006120479A (ru) 2007-12-27
KR20060123298A (ko) 2006-12-01
US20080285744A1 (en) 2008-11-20
JP4884976B2 (ja) 2012-02-29
JP2012037904A (ja) 2012-02-23
CN1890914A (zh) 2007-01-03
EP1712032B1 (en) 2011-05-11
MXPA06006464A (es) 2006-08-23
JP2007514193A (ja) 2007-05-31
KR101079565B1 (ko) 2011-11-04
CN1890914B (zh) 2011-07-27
EP1712032A1 (en) 2006-10-18
ATE509442T1 (de) 2011-05-15
RU2370897C2 (ru) 2009-10-20
JP5453367B2 (ja) 2014-03-26
US8023651B2 (en) 2011-09-20
WO2005060147A1 (en) 2005-06-30

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Legal Events

Date Code Title Description
B25A Requested transfer of rights approved

Owner name: IRDETO B.V. (NL)

Free format text: TRANSFERIDO DE: KONINKLIJKE PHILIPS ELECTRONICS N.V,

B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 9A ANUIDADE.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2260 DE 29/04/2014.