BRPI0411139A - dispositivo e método para criptografar e descriptografar um bloco de dados - Google Patents

dispositivo e método para criptografar e descriptografar um bloco de dados

Info

Publication number
BRPI0411139A
BRPI0411139A BRPI0411139-7A BRPI0411139A BRPI0411139A BR PI0411139 A BRPI0411139 A BR PI0411139A BR PI0411139 A BRPI0411139 A BR PI0411139A BR PI0411139 A BRPI0411139 A BR PI0411139A
Authority
BR
Brazil
Prior art keywords
value
values
module
subkey
mixing
Prior art date
Application number
BRPI0411139-7A
Other languages
English (en)
Inventor
Pascal Junod
Serge Vaudena
Original Assignee
Mediacrypt Ag
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 Mediacrypt Ag filed Critical Mediacrypt Ag
Publication of BRPI0411139A publication Critical patent/BRPI0411139A/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
    • H04L9/06—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
    • H04L2209/24—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)
  • Input From Keyboards Or The Like (AREA)
  • Semiconductor Memories (AREA)
  • Facsimile Transmission Control (AREA)
  • Complex Calculations (AREA)

Abstract

"DISPOSITIVO E MéTODO PARA CRIPTOGRAFAR E DESCRIPTOGRAFAR UM BLOCO DE DADOS". A finalidade desta invenção é propor um novo método criptográfico que ofereça um nível elevado de segurança combinado com uma velocidade de execução elevada. Este objetivo é alcançado através de um método para criptografar ou descriptografar blocos de dados de X a Y, baseado em uma chave principal R; este método utiliza diversos módulos conectados em série, utilizando uma sub-chave RA derivada da chave principal R e compreendendo as etapas de: - entrar ao menos dois valores iniciais X0L e X0R, e misturar estes valores para formar um valor X1, - obter um valor X2 misturando uma primeira parte RAH da sub-chave RA com o valor X1, - obter um valor X3 aplicando o valor X2 a uma camada de troca, compreendendo ao menos uma caixa de troca (sbox), contendo pelo menos uma tabela de constantes da qual a entrada serve como o ponteiro e a constante apontada serve como a saída, - obter um valor X4 usando uma caixa de difusão do tipo multi-troca baseada no valor X3, - obter um valor X5 misturando uma segunda parte RAL da sub-chave RA com o valor X4, - obter o valor X6 aplicando ao valor X5 uma camada de troca, - obter um valor X7 misturando uma primeira parte RAH da sub-chave RA com o valor X6, - misturar o valor X7 com a inicial de pelo menos dois valores XOL e XOR para obter ao menos dois valores X8L e X8R, representando o valor da saída X8 do módulo. Este método utiliza ao menos dois módulos, onde para cada módulo uma nova subchave RA é gerada da chave principal R; os valores iniciais X0 do primeiro módulo é uma divisão dos dados de entrada X, os valores de saída X8L e X8H do último módulo formam os dados de saída Y, e este método adicional compreende a etapa de aplicar em pelo menos um dos valores X8L ou X8R uma função ortomórfica antes de aplicar estes valores à entrada X0R e X0L do módulo seguinte.
BRPI0411139-7A 2003-05-23 2004-05-19 dispositivo e método para criptografar e descriptografar um bloco de dados BRPI0411139A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP03011696A EP1480371A1 (en) 2003-05-23 2003-05-23 Device and method for encrypting and decrypting a block of data
PCT/EP2004/050854 WO2004105305A1 (en) 2003-05-23 2004-05-19 Device and method for encrypting and decrypting a block of data

Publications (1)

Publication Number Publication Date
BRPI0411139A true BRPI0411139A (pt) 2006-07-11

Family

ID=33041000

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0411139-7A BRPI0411139A (pt) 2003-05-23 2004-05-19 dispositivo e método para criptografar e descriptografar um bloco de dados

Country Status (27)

Country Link
US (1) US7499542B2 (pt)
EP (2) EP1480371A1 (pt)
JP (1) JP4663635B2 (pt)
KR (1) KR101050670B1 (pt)
CN (2) CN1795638A (pt)
AP (1) AP1969A (pt)
AT (1) ATE427598T1 (pt)
AU (1) AU2004240359B2 (pt)
BR (1) BRPI0411139A (pt)
CA (1) CA2525591C (pt)
CY (1) CY1109170T1 (pt)
DE (1) DE602004020333D1 (pt)
DK (1) DK1627489T3 (pt)
EA (1) EA008183B1 (pt)
ES (1) ES2323702T3 (pt)
HK (1) HK1082335A1 (pt)
HR (1) HRP20090287T1 (pt)
IL (1) IL171933A (pt)
MA (1) MA27811A1 (pt)
MX (1) MXPA05012481A (pt)
NO (1) NO335894B1 (pt)
NZ (1) NZ543947A (pt)
PL (1) PL1627489T3 (pt)
PT (1) PT1627489E (pt)
SI (1) SI1627489T1 (pt)
WO (1) WO2004105305A1 (pt)
ZA (1) ZA200509275B (pt)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7152165B1 (en) * 1999-07-16 2006-12-19 Intertrust Technologies Corp. Trusted storage systems and methods
AU6104800A (en) 1999-07-16 2001-02-05 Intertrust Technologies Corp. Trusted storage systems and methods
KR100639764B1 (ko) 2005-04-25 2006-10-30 이병관 블록암호화방법
US20090144561A1 (en) * 2005-07-11 2009-06-04 Davidson Jack W Method and System for Software Protection Using Binary Encoding
US7602906B2 (en) * 2005-08-25 2009-10-13 Microsoft Corporation Cipher for disk encryption
DE602006008600D1 (de) * 2006-06-29 2009-10-01 Incard Sa Verfahren zur Diversifizierung eines Schlüssels auf einer Chipkarte
JP2008058830A (ja) * 2006-09-01 2008-03-13 Sony Corp データ変換装置、およびデータ変換方法、並びにコンピュータ・プログラム
JP5485694B2 (ja) * 2006-11-17 2014-05-07 イルデト・コーポレート・ビー・ヴイ ホワイトボックス実施のための暗号化方法
KR101580879B1 (ko) * 2007-05-22 2015-12-30 이르데토 비.브이. 암호 키 데이터를 갱신하는 시스템 및 방법, 서버 시스템, 암호 키 갱신들을 제공하는 방법 및 컴퓨터 판독가능 기록매체
US20080304664A1 (en) * 2007-06-07 2008-12-11 Shanmugathasan Suthaharan System and a method for securing information
CN101321058B (zh) * 2007-06-07 2010-12-15 管海明 一种用于编码和译码数字消息的方法和***
US8369515B2 (en) * 2010-03-18 2013-02-05 Chiou-Haun Lee Cryptographic method of multilayer diffusion in multidimension
CN103546282B (zh) * 2012-07-12 2016-10-05 黄宜豊 具有三维运算、反馈控制与动态替换盒设计的加密方法
JP5772934B2 (ja) * 2013-12-02 2015-09-02 ソニー株式会社 データ変換装置、およびデータ変換方法、並びにコンピュータ・プログラム
CN104022872B (zh) * 2014-04-09 2015-03-25 广州赛意信息科技有限公司 数据加密方法
EP3674952B1 (en) * 2015-03-26 2022-06-15 Nagravision S.A. Method and system for searching for at least a specific datum in a user unit
US10834065B1 (en) 2015-03-31 2020-11-10 F5 Networks, Inc. Methods for SSL protected NTLM re-authentication and devices thereof
US10404698B1 (en) 2016-01-15 2019-09-03 F5 Networks, Inc. Methods for adaptive organization of web application access points in webtops and devices thereof
RU2632119C9 (ru) * 2016-06-02 2017-11-22 Андрей Валерьевич Менячихин Устройство для построения ортоморфизмов, использующее парные разности

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4850019A (en) * 1985-11-08 1989-07-18 Nippon Telegraph And Telephone Corporation Data randomization equipment
JP3225440B2 (ja) * 1990-05-18 2001-11-05 アスコム テック エージー デジタル信号ブロックの変換装置およびその使用方法
US5623549A (en) * 1995-01-30 1997-04-22 Ritter; Terry F. Cipher mechanisms with fencing and balanced block mixing
US5727062A (en) * 1995-07-06 1998-03-10 Ritter; Terry F. Variable size block ciphers
US5675653A (en) * 1995-11-06 1997-10-07 Nelson, Jr.; Douglas Valmore Method and apparatus for digital encryption
CA2164768C (en) * 1995-12-08 2001-01-23 Carlisle Michael Adams Constructing symmetric ciphers using the cast design procedure
US6189095B1 (en) * 1998-06-05 2001-02-13 International Business Machines Corporation Symmetric block cipher using multiple stages with modified type-1 and type-3 feistel networks
US6269163B1 (en) * 1998-06-15 2001-07-31 Rsa Security Inc. Enhanced block ciphers with data-dependent rotations
JP3679936B2 (ja) * 1998-11-27 2005-08-03 東芝ソリューション株式会社 暗復号装置及び記憶媒体
US6694025B1 (en) * 1999-06-02 2004-02-17 Koninklijke Philips Electronics N.V. Method and apparatus for secure distribution of public/private key pairs
JP2003509881A (ja) * 1999-09-03 2003-03-11 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 記録された電子出版資料からのマスター鍵の復元方法
JP3499810B2 (ja) * 2000-03-06 2004-02-23 株式会社東芝 暗号化装置、暗号化方法及び暗号化装置としてコンピュータを機能させるためのプログラムを記録したコンピュータ読取り可能な記録媒体並びに復号装置、復号方法及び復号装置としてコンピュータを機能させるためのプログラムを記録したコンピュータ読取り可能な記録媒体
KR100855890B1 (ko) * 2000-08-03 2008-09-03 코닌클리케 필립스 일렉트로닉스 엔.브이. 대칭-키 암호에 대한 선형 변환

Also Published As

Publication number Publication date
DE602004020333D1 (de) 2009-05-14
JP2007527028A (ja) 2007-09-20
PT1627489E (pt) 2009-06-17
AU2004240359B2 (en) 2009-08-27
AU2004240359A1 (en) 2004-12-02
ZA200509275B (en) 2007-03-28
CA2525591A1 (en) 2004-12-02
NO20055404L (no) 2005-11-18
CA2525591C (en) 2012-10-09
CN1795638A (zh) 2006-06-28
NO335894B1 (no) 2015-03-16
IL171933A0 (en) 2006-04-10
ES2323702T3 (es) 2009-07-23
CN101944992A (zh) 2011-01-12
WO2004105305A9 (en) 2006-01-05
MA27811A1 (fr) 2006-03-01
KR101050670B1 (ko) 2011-07-19
PL1627489T3 (pl) 2009-08-31
CN101944992B (zh) 2012-03-21
HK1082335A1 (en) 2006-06-02
MXPA05012481A (es) 2006-01-30
NZ543947A (en) 2007-05-31
AP2005003445A0 (en) 2005-12-31
EA008183B1 (ru) 2007-04-27
EP1627489A1 (en) 2006-02-22
EA200501623A1 (ru) 2006-06-30
HRP20090287T1 (en) 2009-07-31
ATE427598T1 (de) 2009-04-15
IL171933A (en) 2010-11-30
US20040247117A1 (en) 2004-12-09
DK1627489T3 (da) 2009-07-13
WO2004105305A1 (en) 2004-12-02
US7499542B2 (en) 2009-03-03
AP1969A (en) 2009-03-11
EP1627489B1 (en) 2009-04-01
EP1480371A1 (en) 2004-11-24
CY1109170T1 (el) 2014-07-02
SI1627489T1 (sl) 2009-08-31
JP4663635B2 (ja) 2011-04-06
KR20060014417A (ko) 2006-02-15

Similar Documents

Publication Publication Date Title
BRPI0411139A (pt) dispositivo e método para criptografar e descriptografar um bloco de dados
JP7107670B2 (ja) ビットミキサにより暗号ラウンド鍵を生成するためのシステム及び方法
Johnson et al. A PUF-enabled secure architecture for FPGA-based IoT applications
DK1686722T3 (en) Block encryption device and block encryption method comprising rotation key programming
CN102611549B (zh) 数据加密设备和存储卡
US6792438B1 (en) Secure hardware random number generator
US20160006570A1 (en) Generating a key derived from a cryptographic key using a physically unclonable function
US9602273B2 (en) Implementing key scheduling for white-box DES implementation
CN106888081B (zh) 白盒实施方案内中间值的宽编码
NO20055403L (no) Fremgangsmate for a generere en tilsynelatend tilfeldig rekkefolge
Bhaskar et al. An advanced symmetric block cipher based on chaotic systems
Wang et al. A performance and area efficient ASIP for higher-order DPA-resistant AES
CN113112252A (zh) 基于区块链的资源转移方法、装置、电子设备及存储介质
BR0318492A (pt) rede dependente de chave combinatória para criptografia/decifração de dados digitais de entrada, bloco para ser usado para funções criptográficas controladas por chave secreta, método para criptografia/decifração de dados digitais de entrada, dispositivo de processamento de dados, e, dispositivo de multimìdia para armazenar e reproduzir dados digitais
Mühlbach et al. Secure communication in microcomputer bus systems for embedded devices
Sawant et al. Spartan-6 FPGA implementation of AES algorithm
EP3391583B1 (en) A computation device and method
WO2015031949A1 (en) Data encryption process
JP2002217898A (ja) 擬似乱数生成システム
ES2287013T3 (es) Procedimiento de contramedida en un componente electronico que pone en aplicacion un algoritmo de criptografia con llave secreta y dinamica.
Abdulwahed Chaos-Based Advanced Encryption Standard
Kumar et al. Cryptanalysis of 1-round KECCAK
Choi et al. Optimization of PBKDF2-HMAC-SHA256 and PBKDF2-HMAC-LSH256 in CPU Environments
WO2019050343A1 (ko) 화이트박스 암호가 적용된 블록 암호 기반의 난수 생성 방법 및 장치
Muhlbach et al. Secure and authenticated communication in chip-level microcomputer bus systems with tree parity machines

Legal Events

Date Code Title Description
B25A Requested transfer of rights approved

Owner name: NAGRAVISION S.A. (CH)

Free format text: TRANSFERIDO DE: MEDIACRYPT AG

B06A Patent application procedure suspended [chapter 6.1 patent gazette]
B11B Dismissal acc. art. 36, par 1 of ipl - no reply within 90 days to fullfil the necessary requirements