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 execuçãoInfo
- 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
Links
Classifications
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- 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
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~)).
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1890914B (zh) | 2003-12-11 | 2011-07-27 | 耶德托公司 | 块加密系统、利用置换隐藏各加密轮的核心加密函数 |
KR20060107282A (ko) * | 2005-04-07 | 2006-10-13 | 엘지전자 주식회사 | 데이터 재생방법, 데이터 기록재생 플레이어 및 데이터전송방법 |
WO2007105126A2 (en) | 2006-03-10 | 2007-09-20 | Koninklijke Philips Electronics N.V. | Method and system for obfuscating a cryptographic function |
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 |
WO2008007305A2 (en) * | 2006-07-12 | 2008-01-17 | Koninklijke Philips Electronics N.V. | Method and system for obfuscating a gryptographic function |
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 |
RU2661308C2 (ru) * | 2012-12-21 | 2018-07-13 | Конинклейке Филипс Н.В. | Вычислительное устройство, конфигурируемое с помощью табличной сети |
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 |
US10075290B2 (en) * | 2013-12-20 | 2018-09-11 | 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 |
JP6890589B2 (ja) * | 2015-12-15 | 2021-06-18 | コーニンクレッカ フィリップス エヌ ヴェKoninklijke Philips N.V. | 計算デバイス及び方法 |
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 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2582174B1 (fr) * | 1985-05-15 | 1990-03-09 | Thomson Csf | Dispositif de chiffrement par substitutions-permutations |
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 |
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 |
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 |
EP0988591A1 (en) | 1997-06-09 | 2000-03-29 | Intertrust, Incorporated | Obfuscation techniques for enhancing software security |
US6377687B1 (en) * | 1997-07-29 | 2002-04-23 | Lucent Technologies 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 |
CN1890914B (zh) | 2003-12-11 | 2011-07-27 | 耶德托公司 | 块加密系统、利用置换隐藏各加密轮的核心加密函数 |
-
2004
- 2004-11-30 CN CN2004800362647A patent/CN1890914B/zh not_active Expired - Fee Related
- 2004-11-30 MX MXPA06006464A patent/MXPA06006464A/es active IP Right Grant
- 2004-11-30 BR BRPI0417450-0A patent/BRPI0417450A/pt not_active IP Right Cessation
- 2004-11-30 RU RU2006120479/09A patent/RU2370897C2/ru not_active IP Right Cessation
- 2004-11-30 JP JP2006543679A patent/JP4884976B2/ja not_active Expired - Fee Related
- 2004-11-30 WO PCT/IB2004/052607 patent/WO2005060147A1/en active Application Filing
- 2004-11-30 EP EP04799288A patent/EP1712032B1/en active Active
- 2004-11-30 US US10/596,336 patent/US8023651B2/en active Active
- 2004-11-30 AT AT04799288T patent/ATE509442T1/de not_active IP Right Cessation
-
2006
- 2006-06-09 KR KR1020067011425A patent/KR101079565B1/ko not_active IP Right Cessation
-
2011
- 2011-10-14 JP JP2011227010A patent/JP5453367B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CN1890914A (zh) | 2007-01-03 |
US20080285744A1 (en) | 2008-11-20 |
US8023651B2 (en) | 2011-09-20 |
JP2007514193A (ja) | 2007-05-31 |
EP1712032A1 (en) | 2006-10-18 |
MXPA06006464A (es) | 2006-08-23 |
EP1712032B1 (en) | 2011-05-11 |
KR101079565B1 (ko) | 2011-11-04 |
JP4884976B2 (ja) | 2012-02-29 |
WO2005060147A1 (en) | 2005-06-30 |
ATE509442T1 (de) | 2011-05-15 |
KR20060123298A (ko) | 2006-12-01 |
CN1890914B (zh) | 2011-07-27 |
JP2012037904A (ja) | 2012-02-23 |
RU2006120479A (ru) | 2007-12-27 |
JP5453367B2 (ja) | 2014-03-26 |
RU2370897C2 (ru) | 2009-10-20 |
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Legal Events
Date | Code | Title | Description |
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B25A | Requested transfer of rights approved |
Owner name: IRDETO B.V. (NL) Free format text: TRANSFERIDO DE: KONINKLIJKE PHILIPS ELECTRONICS N.V, |
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B08F | Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette] |
Free format text: REFERENTE A 9A ANUIDADE. |
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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. |