BR0003884A - Método de criptografia, aparelho de criptografia, método de decriptografia e aparelho de decriptografia - Google Patents

Método de criptografia, aparelho de criptografia, método de decriptografia e aparelho de decriptografia

Info

Publication number
BR0003884A
BR0003884A BR0003884-9A BR0003884A BR0003884A BR 0003884 A BR0003884 A BR 0003884A BR 0003884 A BR0003884 A BR 0003884A BR 0003884 A BR0003884 A BR 0003884A
Authority
BR
Brazil
Prior art keywords
encryption
decryption
subkey
groups
generated
Prior art date
Application number
BR0003884-9A
Other languages
English (en)
Other versions
BR0003884B1 (pt
Inventor
Makoto Tatebayashi
Kaoru Yokota
Motoji Ohmori
Fumihiko Sano
Naoki Endo
Original Assignee
Matsushita Electric Ind Co Ltd
Toshiba Kk
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 Matsushita Electric Ind Co Ltd, Toshiba Kk filed Critical Matsushita Electric Ind Co Ltd
Publication of BR0003884A publication Critical patent/BR0003884A/pt
Publication of BR0003884B1 publication Critical patent/BR0003884B1/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
    • 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
    • H04L2209/08—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
    • H04L2209/12—Details relating to cryptographic hardware or logic circuitry
    • 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

Abstract

Patente de Invenção: <B>"MéTODO DE CRIPTOGRAFIA, APARELHO DE CRIPTOGRAFIA, MéTODO DE DECRIPTOGRAFIA E APARELHO DE DECRIPTOGRAFIA"<D>. A unidade de geração de dados de subchave 101 possui dois processos de geração de subchave diferentes. Quando criptografando um (T*n)° bloco de texto simples (onde T denota um ciclo predeterminado e n é um número inteiro positivo), dezesseis grupos de dados de subchave são gerados. Em todos os outros casos, dois grupos de dados de subchave são gerados. A unidade de criptografia 100 criptografa o texto simples utilizando os dezesseis ou dois grupos de dados de subchave gerados.
BRPI0003884-9A 1999-08-31 2000-08-30 Método de criptografia, aparelho de criptografia, método de decriptografia e aparelho de decriptografia BR0003884B1 (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24527799 1999-08-31

Publications (2)

Publication Number Publication Date
BR0003884A true BR0003884A (pt) 2001-04-03
BR0003884B1 BR0003884B1 (pt) 2014-04-15

Family

ID=17131294

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0003884-9A BR0003884B1 (pt) 1999-08-31 2000-08-30 Método de criptografia, aparelho de criptografia, método de decriptografia e aparelho de decriptografia

Country Status (9)

Country Link
US (1) US6917684B1 (pt)
EP (1) EP1081888B1 (pt)
JP (1) JP3364200B2 (pt)
CN (2) CN100595816C (pt)
BR (1) BR0003884B1 (pt)
CA (1) CA2316636C (pt)
DE (1) DE60024941T8 (pt)
RU (1) RU2257677C2 (pt)
SG (1) SG87160A1 (pt)

Families Citing this family (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7565546B2 (en) * 1999-03-30 2009-07-21 Sony Corporation System, method and apparatus for secure digital content transmission
US7730300B2 (en) 1999-03-30 2010-06-01 Sony Corporation Method and apparatus for protecting the transfer of data
US7039614B1 (en) * 1999-11-09 2006-05-02 Sony Corporation Method for simulcrypting scrambled data to a plurality of conditional access devices
US7124303B2 (en) * 2001-06-06 2006-10-17 Sony Corporation Elementary stream partial encryption
US7747853B2 (en) * 2001-06-06 2010-06-29 Sony Corporation IP delivery of secure digital content
US7895616B2 (en) 2001-06-06 2011-02-22 Sony Corporation Reconstitution of program streams split across multiple packet identifiers
EP1396142B8 (en) * 2001-06-12 2005-06-08 International Business Machines Corporation Method of authenticating a plurality of files linked to a text document
WO2003034425A1 (en) * 2001-10-12 2003-04-24 Koninklijke Philips Electronics N.V. Apparatus and method for reading or writing block-wise stored user data
US7233669B2 (en) * 2002-01-02 2007-06-19 Sony Corporation Selective encryption to enable multiple decryption keys
US7292691B2 (en) * 2002-01-02 2007-11-06 Sony Corporation Progressive video refresh slice detection
US7823174B2 (en) 2002-01-02 2010-10-26 Sony Corporation Macro-block based content replacement by PID mapping
US7155012B2 (en) 2002-01-02 2006-12-26 Sony Corporation Slice mask and moat pattern partial encryption
US7292690B2 (en) * 2002-01-02 2007-11-06 Sony Corporation Video scene change detection
US7765567B2 (en) 2002-01-02 2010-07-27 Sony Corporation Content replacement by PID mapping
JP4150886B2 (ja) * 2002-04-19 2008-09-17 ソニー株式会社 暗号化復号化演算装置およびデータ受信装置
US8818896B2 (en) 2002-09-09 2014-08-26 Sony Corporation Selective encryption with coverage encryption
US20040088539A1 (en) * 2002-11-01 2004-05-06 Infante Steven D. System and method for securing digital messages
US8572408B2 (en) 2002-11-05 2013-10-29 Sony Corporation Digital rights management of a digital device
US7724907B2 (en) 2002-11-05 2010-05-25 Sony Corporation Mechanism for protecting the transfer of digital content
US7853980B2 (en) 2003-10-31 2010-12-14 Sony Corporation Bi-directional indices for trick mode video-on-demand
EP1610490A1 (fr) * 2004-06-21 2005-12-28 France Telecom Procédé et dispositif de chiffrement ou déchiffrement de données
US20060018627A1 (en) * 2004-07-20 2006-01-26 Canon Kabushiki Kaisha Image reproducing apparatus and image reproducing method
US7895617B2 (en) 2004-12-15 2011-02-22 Sony Corporation Content substitution editor
US8041190B2 (en) 2004-12-15 2011-10-18 Sony Corporation System and method for the creation, synchronization and delivery of alternate content
US7546461B2 (en) * 2005-06-28 2009-06-09 Microsoft Corporation Strengthening secure hash functions
JP2007013506A (ja) * 2005-06-29 2007-01-18 N-Crypt Inc 暗号化処理装置、暗号化方法、復号化処理装置、復号化方法、及びデータ構造
US8185921B2 (en) 2006-02-28 2012-05-22 Sony Corporation Parental control of displayed content using closed captioning
WO2008066671A2 (en) * 2006-11-08 2008-06-05 Voltage Security, Inc. Indentity-based-encryption extensions formed using multiple instances of an identity based encryption scheme
JP5024999B2 (ja) * 2007-09-28 2012-09-12 東芝ソリューション株式会社 暗号管理装置、暗号管理方法、暗号管理プログラム
JP4993733B2 (ja) * 2007-09-28 2012-08-08 東芝ソリューション株式会社 暗号クライアント装置、暗号パッケージ配信システム、暗号コンテナ配信システム及び暗号管理サーバ装置
CN101887713B (zh) * 2009-05-13 2012-01-25 深圳市文鼎创数据科技有限公司 字库的加密方法及装置
US8611540B2 (en) * 2010-06-23 2013-12-17 Damaka, Inc. System and method for secure messaging in a hybrid peer-to-peer network
JP5225414B2 (ja) * 2011-03-08 2013-07-03 株式会社東芝 暗号演算装置
US9774443B2 (en) * 2015-03-04 2017-09-26 Apple Inc. Computing key-schedules of the AES for use in white boxes
GB2544453A (en) * 2015-09-14 2017-05-24 Creme Software Ltd System for secure analysis of datasets
CN105790930A (zh) * 2016-04-29 2016-07-20 南京酷派软件技术有限公司 用于移动终端的信息加密方法、信息加密装置和移动终端
RU2694336C1 (ru) * 2018-05-08 2019-07-11 Открытое Акционерное Общество "Информационные Технологии И Коммуникационные Системы" Способ аутентифицированного шифрования
CN111212026A (zh) * 2019-11-21 2020-05-29 深圳壹账通智能科技有限公司 基于区块链的数据处理方法、装置及计算机设备

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4229818A (en) * 1978-12-29 1980-10-21 International Business Machines Corporation Method and apparatus for enciphering blocks which succeed short blocks in a key-controlled block-cipher cryptographic system
US5081676A (en) * 1990-10-04 1992-01-14 Chou Wayne W Method and apparatus for protecting multiple copies of computer software from unauthorized use
GB2267419B (en) * 1992-05-29 1996-11-27 Toshiba Kk Data processing apparatus
US5351299A (en) * 1992-06-05 1994-09-27 Matsushita Electric Industrial Co., Ltd. Apparatus and method for data encryption with block selection keys and data encryption keys
US5671283A (en) * 1995-06-08 1997-09-23 Wave Systems Corp. Secure communication system with cross linked cryptographic codes
US5606616A (en) * 1995-07-03 1997-02-25 General Instrument Corporation Of Delaware Cryptographic apparatus with double feedforward hash function
US5825889A (en) * 1996-10-15 1998-10-20 Ericsson Inc. Use of duplex cipher algorithms for satellite channels with delay
TW367465B (en) * 1997-04-23 1999-08-21 Matsushita Electric Ind Co Ltd Cryptographic processing apparatus cryptographic processing method, and storage medium storing cryptographic processing program for improving security without greatly increasing hardware scale and processing time
DE19724072C2 (de) * 1997-06-07 1999-04-01 Deutsche Telekom Ag Vorrichtung zur Durchführung eines Blockchiffrierverfahrens
JP2000066587A (ja) * 1998-08-24 2000-03-03 Toshiba Corp データ処理装置及び通信システム並びに記録媒体

Also Published As

Publication number Publication date
US6917684B1 (en) 2005-07-12
CA2316636C (en) 2007-05-15
EP1081888A3 (en) 2002-07-17
DE60024941D1 (de) 2006-01-26
DE60024941T2 (de) 2006-06-29
DE60024941T8 (de) 2006-08-10
JP2001142394A (ja) 2001-05-25
BR0003884B1 (pt) 2014-04-15
RU2257677C2 (ru) 2005-07-27
CN100595816C (zh) 2010-03-24
CN1822538A (zh) 2006-08-23
CA2316636A1 (en) 2001-02-28
CN100592681C (zh) 2010-02-24
EP1081888A2 (en) 2001-03-07
JP3364200B2 (ja) 2003-01-08
SG87160A1 (en) 2002-03-19
EP1081888B1 (en) 2005-12-21
CN1286457A (zh) 2001-03-07

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Legal Events

Date Code Title Description
B25D Requested change of name of applicant approved

Owner name: KABUSHIKI KAISHA TOSHIBA (JP) , PANASONIC CORPORAT

Free format text: NOME ALTERADO DE: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD

B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]

Free format text: PRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 15/04/2014, OBSERVADAS AS CONDICOES LEGAIS.