BR0000172A - Aparelho e método de criptografia de dados - Google Patents

Aparelho e método de criptografia de dados

Info

Publication number
BR0000172A
BR0000172A BR0000172-4A BR0000172A BR0000172A BR 0000172 A BR0000172 A BR 0000172A BR 0000172 A BR0000172 A BR 0000172A BR 0000172 A BR0000172 A BR 0000172A
Authority
BR
Brazil
Prior art keywords
data
perform
rotating
moving
higher order
Prior art date
Application number
BR0000172-4A
Other languages
English (en)
Other versions
BRPI0000172B1 (pt
Inventor
Kaoru Yokota
Motoji Ohmori
Atsuko Miyaji
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of BR0000172A publication Critical patent/BR0000172A/pt
Publication of BRPI0000172B1 publication Critical patent/BRPI0000172B1/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
    • H04L2209/12—Details relating to cryptographic hardware or logic circuitry
    • H04L2209/125—Parallelization or pipelining, e.g. for accelerating processing of cryptographic operations
    • 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)
  • Executing Machine-Instructions (AREA)

Abstract

Patente de Invenção: <B>"APARELHO E MéTODO DE CRIPTOGRAFIA DE DADOS" <D>. Uma unidade de conversão de dados inclui uma unidade de adição de chave para executar um módulo de adição aritmética 2^ 32^ para os dados de entrada F e para os dados da subchave Ki e emitir o resultado como os dados G e uma unidade de substituição de dados para executar uma operação "OR" exclusiva para os bits correspondentes nos dados Rot7(G) obtidos por se girar-deslocar os dados G por 7 bits em direção as posições de bits de ordem mais elevadas, os dados Rot1(G) obtidos por se girar-deslocar os dados G por 1 bit em direção as posições de bit de ordem mais elevada e os próprios dados G.
BRPI0000172A 1999-05-26 2000-01-26 aparelho para cifragem de dados usando rotações e método correspondente BRPI0000172B1 (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14607999 1999-05-26

Publications (2)

Publication Number Publication Date
BR0000172A true BR0000172A (pt) 2001-01-16
BRPI0000172B1 BRPI0000172B1 (pt) 2015-10-27

Family

ID=15399648

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0000172A BRPI0000172B1 (pt) 1999-05-26 2000-01-26 aparelho para cifragem de dados usando rotações e método correspondente

Country Status (9)

Country Link
US (1) US6304657B1 (pt)
EP (1) EP1056240B1 (pt)
KR (1) KR100349332B1 (pt)
CN (1) CN1282324C (pt)
BR (1) BRPI0000172B1 (pt)
CA (1) CA2298055C (pt)
DE (1) DE69906037T2 (pt)
MY (1) MY125798A (pt)
SG (1) SG85691A1 (pt)

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US7177421B2 (en) * 2000-04-13 2007-02-13 Broadcom Corporation Authentication engine architecture and method
FR2814009B1 (fr) * 2000-09-14 2003-01-31 Jean Roland Riviere Procede et dispositif de transformation de donnees a caractere convolutif et decalages variables, et systemes les mettant en oeuvre
DE60213762T2 (de) * 2001-01-12 2007-10-04 Broadcom Corp., Irvine Implementierung des SHA1 Algorithmusses
DE60301750T2 (de) * 2002-04-03 2006-07-06 Matsushita Electric Industrial Co., Ltd., Kadoma Vorrichtung zur Erzeugung eines erweiterten Schlüssels, Verschlüsselungsvorrichtung und Verschlüsselungssystem
US7376235B2 (en) * 2002-04-30 2008-05-20 Microsoft Corporation Methods and systems for frustrating statistical attacks by injecting pseudo data into a data system
US7343011B2 (en) * 2002-07-15 2008-03-11 Conexant, Inc. Secure telecommunications system for wireless local area networks
US7796752B2 (en) * 2002-11-04 2010-09-14 Marvell International Ltd. Cipher implementation
US7346160B2 (en) * 2003-04-23 2008-03-18 Michaelsen David L Randomization-based encryption apparatus and method
US7257225B2 (en) * 2003-12-29 2007-08-14 American Express Travel Related Services Company, Inc. System and method for high speed reversible data encryption
US7526643B2 (en) * 2004-01-08 2009-04-28 Encryption Solutions, Inc. System for transmitting encrypted data
US8031865B2 (en) * 2004-01-08 2011-10-04 Encryption Solutions, Inc. Multiple level security system and method for encrypting data within documents
US7752453B2 (en) 2004-01-08 2010-07-06 Encryption Solutions, Inc. Method of encrypting and transmitting data and system for transmitting encrypted data
JP4101225B2 (ja) * 2004-10-19 2008-06-18 キヤノン株式会社 電子機器及び情報処理装置及びそれらの制御方法、並びにコンピュータプログラム及びコンピュータ可読記憶媒体
EP1753116B1 (en) * 2005-07-29 2010-10-06 Infineon Technologies AG Apparatus and method for detecting an error in a power signal
US7388781B2 (en) * 2006-03-06 2008-06-17 Sandisk Il Ltd. Multi-bit-per-cell flash memory device with non-bijective mapping
US8848442B2 (en) * 2006-03-06 2014-09-30 Sandisk Il Ltd. Multi-bit-per-cell flash memory device with non-bijective mapping
JP4189439B2 (ja) * 2006-06-23 2008-12-03 パナソニック株式会社 暗号処理装置、データ変換方法、データ変換プログラム、記録媒体及び集積回路
CN101237321B (zh) * 2008-02-03 2010-12-08 西北农林科技大学 基于循环队列移位规则的加密方法
KR101438072B1 (ko) * 2010-04-15 2014-09-03 라모트 앳 텔-아비브 유니버시티 리미티드 소거 없는 플래시 메모리의 다중 프로그래밍
US8379847B2 (en) * 2010-06-30 2013-02-19 International Business Machines Corporation Data and control encryption
KR101148560B1 (ko) * 2010-09-01 2012-05-23 중앙대학교 산학협력단 비트 조합 순서를 이용한 암호화 방법 및 장치
KR101312374B1 (ko) * 2011-07-25 2013-09-27 소프트포럼 주식회사 데이터 크기 조정 장치 및 방법
CN104318134B (zh) * 2014-11-05 2017-06-06 北京深思数盾科技股份有限公司 一种数据保护方法
CN105022961B (zh) * 2015-06-29 2018-07-06 北京深思数盾科技股份有限公司 一种计算机数据的保护方法及装置
CN106600788A (zh) * 2016-12-23 2017-04-26 嘉应学院 一种用于密码锁的实现时间数据安全交互的方法
CN110336662B (zh) * 2019-06-06 2022-02-18 平安科技（深圳）有限公司 数字信息加密方法、装置、计算机设备和存储介质
US10637837B1 (en) 2019-11-27 2020-04-28 Marpex, Inc. Method and system to secure human and also internet of things communications through automation of symmetric encryption key management
CN114254366B (zh) * 2021-12-27 2025-05-16 中国电信股份有限公司 加密方法、解密方法、装置及电子设备
CN115277192B (zh) * 2022-07-27 2024-01-30 维沃移动通信有限公司 信息加密方法、装置及电子设备
CN115514482B (zh) * 2022-10-11 2024-11-12 深圳知时致和科技有限公司 基于伪随机数的信息加密方法、装置、设备及介质
US12197921B2 (en) * 2022-12-22 2025-01-14 Intel Corporation Accelerating eight-way parallel Keccak execution

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Publication number Priority date Publication date Assignee Title
US4255811A (en) * 1975-03-25 1981-03-10 International Business Machines Corporation Key controlled block cipher cryptographic system
DE2658065A1 (de) * 1976-12-22 1978-07-06 Ibm Deutschland Maschinelles chiffrieren und dechiffrieren
US5003597A (en) * 1989-12-21 1991-03-26 Xerox Corporation Method and apparatus for data encryption
US5054067A (en) * 1990-02-21 1991-10-01 General Instrument Corporation Block-cipher cryptographic device based upon a pseudorandom nonlinear sequence generator
US5727062A (en) * 1995-07-06 1998-03-10 Ritter; Terry F. Variable size block ciphers
FR2737370B1 (fr) * 1995-07-27 1997-08-22 Bull Cp8 Procede de communication cryptographique
US5724428A (en) * 1995-11-01 1998-03-03 Rsa Data Security, Inc. Block encryption algorithm with data-dependent rotations

Also Published As

Publication number Publication date
DE69906037T2 (de) 2003-08-28
EP1056240B1 (en) 2003-03-19
KR100349332B1 (ko) 2002-08-21
MY125798A (en) 2006-08-30
CA2298055C (en) 2007-07-10
SG85691A1 (en) 2002-01-15
CN1275846A (zh) 2000-12-06
BRPI0000172B1 (pt) 2015-10-27
KR20000076501A (ko) 2000-12-26
DE69906037D1 (de) 2003-04-24
EP1056240A1 (en) 2000-11-29
CN1282324C (zh) 2006-10-25
US6304657B1 (en) 2001-10-16
CA2298055A1 (en) 2000-11-26

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Legal Events

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

Owner name: PANASONIC CORPORATION (JP)

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

B06A Patent application procedure suspended [chapter 6.1 patent gazette]
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 27/10/2015, OBSERVADAS AS CONDICOES LEGAIS.