SG124292A1 - Block cipher apparatus using auxiliary transformation - Google Patents

Block cipher apparatus using auxiliary transformation

Info

Publication number
SG124292A1
SG124292A1 SG200407161A SG200407161A SG124292A1 SG 124292 A1 SG124292 A1 SG 124292A1 SG 200407161 A SG200407161 A SG 200407161A SG 200407161 A SG200407161 A SG 200407161A SG 124292 A1 SG124292 A1 SG 124292A1
Authority
SG
Singapore
Prior art keywords
data transformation
unit
transformation unit
block cipher
cipher apparatus
Prior art date
Application number
SG200407161A
Other languages
English (en)
Inventor
Mitsuru Matsui
Toshio Tokita
Junko Nakajima
Masayuki Kanda
Shiho Moriai
Kazumaro Aoki
Original Assignee
Mitsubishi Electric Corp
Nippon Telegraph & Telephone
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 Mitsubishi Electric Corp, Nippon Telegraph & Telephone filed Critical Mitsubishi Electric Corp
Publication of SG124292A1 publication Critical patent/SG124292A1/en

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09C—CIPHERING OR DECIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHER PURPOSES INVOLVING THE NEED FOR SECRECY
    • G09C1/00—Apparatus or methods whereby a given sequence of signs, e.g. an intelligible text, is transformed into an unintelligible sequence of signs by transposing the signs or groups of signs or by replacing them by others according to a predetermined system
    • 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
    • H04L2209/122—Hardware reduction or efficient architectures
    • 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)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Storage Device Security (AREA)
  • Facsimile Transmission Control (AREA)
  • Slot Machines And Peripheral Devices (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Materials For Medical Uses (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Document Processing Apparatus (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Burglar Alarm Systems (AREA)
  • Lock And Its Accessories (AREA)
  • Communication Control (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Studio Circuits (AREA)
  • Prostheses (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Complex Calculations (AREA)
SG200407161A 2000-03-09 2001-03-08 Block cipher apparatus using auxiliary transformation SG124292A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000064614 2000-03-09

Publications (1)

Publication Number Publication Date
SG124292A1 true SG124292A1 (en) 2006-08-30

Family

ID=18584290

Family Applications (4)

Application Number Title Priority Date Filing Date
SG200407161A SG124292A1 (en) 2000-03-09 2001-03-08 Block cipher apparatus using auxiliary transformation
SG200407213A SG124294A1 (en) 2000-03-09 2001-03-08 Block cipher apparatus using auxiliary tranformation
SG200407157A SG124291A1 (en) 2000-03-09 2001-03-08 Block cipher apparatus using auxuiliary transformation
SG200407209A SG124293A1 (en) 2000-03-09 2001-03-08 Block cipher apparatus using auxiliary transformation

Family Applications After (3)

Application Number Title Priority Date Filing Date
SG200407213A SG124294A1 (en) 2000-03-09 2001-03-08 Block cipher apparatus using auxiliary tranformation
SG200407157A SG124291A1 (en) 2000-03-09 2001-03-08 Block cipher apparatus using auxuiliary transformation
SG200407209A SG124293A1 (en) 2000-03-09 2001-03-08 Block cipher apparatus using auxiliary transformation

Country Status (16)

Country Link
US (5) US7864950B2 (da)
EP (7) EP1689113B1 (da)
JP (3) JP4127472B2 (da)
KR (8) KR100465075B1 (da)
CN (5) CN100392688C (da)
AT (3) ATE545991T1 (da)
AU (5) AU767323B2 (da)
CA (5) CA2449665C (da)
DE (3) DE60137269D1 (da)
DK (7) DK1686720T3 (da)
ES (7) ES2616544T3 (da)
MX (1) MXPA01011323A (da)
NO (1) NO333209B1 (da)
SG (4) SG124292A1 (da)
TW (1) TWI275049B (da)
WO (1) WO2001067425A1 (da)

Families Citing this family (55)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI275049B (en) * 2000-03-09 2007-03-01 Nippon Telegraph & Telephone Block cipher apparatus using auxiliary transformation
JP3724399B2 (ja) * 2001-01-23 2005-12-07 株式会社日立製作所 疑似乱数生成装置またはそれを用いた暗号復号処理装置
US7269615B2 (en) 2001-12-18 2007-09-11 Analog Devices, Inc. Reconfigurable input Galois field linear transformer system
US7283628B2 (en) * 2001-11-30 2007-10-16 Analog Devices, Inc. Programmable data encryption engine
US7508937B2 (en) * 2001-12-18 2009-03-24 Analog Devices, Inc. Programmable data encryption engine for advanced encryption standard algorithm
JP4128395B2 (ja) * 2002-05-23 2008-07-30 三菱電機株式会社 データ変換装置
JP3503638B1 (ja) * 2002-09-26 2004-03-08 日本電気株式会社 暗号装置及び暗号プログラム
DE10345457A1 (de) * 2003-09-30 2005-04-28 Infineon Technologies Ag Verfahren und Vorrichtung zur Ver- und Entschlüsselung
US7545928B1 (en) * 2003-12-08 2009-06-09 Advanced Micro Devices, Inc. Triple DES critical timing path improvement
US7580519B1 (en) 2003-12-08 2009-08-25 Advanced Micro Devices, Inc. Triple DES gigabit/s performance using single DES engine
US7257225B2 (en) * 2003-12-29 2007-08-14 American Express Travel Related Services Company, Inc. System and method for high speed reversible data encryption
JP3933647B2 (ja) * 2004-05-10 2007-06-20 シャープ株式会社 消費電力解析防止機能つき半導体装置
US7885405B1 (en) 2004-06-04 2011-02-08 GlobalFoundries, Inc. Multi-gigabit per second concurrent encryption in block cipher modes
US7526085B1 (en) 2004-07-13 2009-04-28 Advanced Micro Devices, Inc. Throughput and latency of inbound and outbound IPsec processing
KR100774068B1 (ko) * 2004-09-14 2007-11-06 마츠시타 덴끼 산교 가부시키가이샤 배럴시프트장치
US7783037B1 (en) 2004-09-20 2010-08-24 Globalfoundries Inc. Multi-gigabit per second computing of the rijndael inverse cipher
JP4859536B2 (ja) * 2006-05-30 2012-01-25 三菱電機株式会社 データ変換装置
JP4882598B2 (ja) * 2006-07-28 2012-02-22 ソニー株式会社 暗号処理装置、暗号処理アルゴリズム構築方法、および暗号処理方法、並びにコンピュータ・プログラム
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
JP5050454B2 (ja) 2006-09-01 2012-10-17 ソニー株式会社 暗号処理装置、および暗号処理方法、並びにコンピュータ・プログラム
CN100436555C (zh) * 2006-09-06 2008-11-26 深圳市永仁包装印刷材料有限公司 一种水溶性金银墨及其制备方法
JP5055993B2 (ja) 2006-12-11 2012-10-24 ソニー株式会社 暗号処理装置、および暗号処理方法、並びにコンピュータ・プログラム
US8036377B1 (en) 2006-12-12 2011-10-11 Marvell International Ltd. Method and apparatus of high speed encryption and decryption
JP4857230B2 (ja) * 2007-03-30 2012-01-18 株式会社日立製作所 疑似乱数生成装置及びそれを用いた暗号化処理装置
US7890565B2 (en) * 2007-04-30 2011-02-15 Lsi Corporation Efficient hardware implementation of tweakable block cipher
CN100495961C (zh) * 2007-11-19 2009-06-03 西安西电捷通无线网络通信有限公司 一种基于分组密码算法的加密处理方法
CN100581101C (zh) * 2007-11-19 2010-01-13 西安西电捷通无线网络通信有限公司 一种基于分组密码算法的加密处理设备
JP5272417B2 (ja) * 2008-01-21 2013-08-28 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
US20090186966A1 (en) * 2008-01-22 2009-07-23 Sabic Innovative Plastics Ip B.V. Thermoplastic polyestercarbonate composition
JP5200949B2 (ja) * 2009-01-16 2013-06-05 富士通株式会社 暗号処理装置
US9317286B2 (en) * 2009-03-31 2016-04-19 Oracle America, Inc. Apparatus and method for implementing instruction support for the camellia cipher algorithm
US20100250965A1 (en) * 2009-03-31 2010-09-30 Olson Christopher H Apparatus and method for implementing instruction support for the advanced encryption standard (aes) algorithm
US20100246815A1 (en) * 2009-03-31 2010-09-30 Olson Christopher H Apparatus and method for implementing instruction support for the kasumi cipher algorithm
US8654970B2 (en) * 2009-03-31 2014-02-18 Oracle America, Inc. Apparatus and method for implementing instruction support for the data encryption standard (DES) algorithm
US8832464B2 (en) * 2009-03-31 2014-09-09 Oracle America, Inc. Processor and method for implementing instruction support for hash algorithms
JP5296217B2 (ja) * 2009-09-24 2013-09-25 株式会社東芝 鍵スケジュール装置および方法
JP2011130340A (ja) * 2009-12-21 2011-06-30 Kddi Corp ストリーム暗号の暗号化装置、ストリーム暗号の復号化装置、ストリーム暗号の暗号化方法、ストリーム暗号の復号化方法およびプログラム
KR101334040B1 (ko) * 2010-01-20 2013-11-28 한국전자통신연구원 대칭키 암호화 시스템의 마스킹 연산 방법 및 장치
JP5539024B2 (ja) * 2010-05-27 2014-07-02 キヤノン株式会社 データ暗号化装置およびその制御方法
US8611540B2 (en) * 2010-06-23 2013-12-17 Damaka, Inc. System and method for secure messaging in a hybrid peer-to-peer network
US20120079462A1 (en) * 2010-09-24 2012-03-29 SoftKrypt LLC Systems and methods of source software code obfuscation
FR2966953B1 (fr) * 2010-11-02 2015-08-28 St Microelectronics Rousset Procede de contremesure cryptographique par derivation d'une donnee secrete
US8958550B2 (en) * 2011-09-13 2015-02-17 Combined Conditional Access Development & Support. LLC (CCAD) Encryption operation with real data rounds, dummy data rounds, and delay periods
JP5481455B2 (ja) * 2011-09-27 2014-04-23 株式会社東芝 暗号処理装置
JP5338945B2 (ja) * 2012-05-22 2013-11-13 ソニー株式会社 復号処理装置、情報処理装置、および復号処理方法、並びにコンピュータ・プログラム
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
CN105215593A (zh) * 2014-07-01 2016-01-06 长治市澳瑞特欣鑫健身器材有限公司 一种篮圈焊接模具
CN104917610B (zh) * 2015-06-15 2018-03-06 上海交通大学 基于量子真随机数的通信中继服务器安全系统及方法
KR20170002836A (ko) 2015-06-30 2017-01-09 주식회사 피엔아이티 Nfc를 이용한 미아방지용 캐릭터 목걸이.
US11070358B2 (en) 2015-12-15 2021-07-20 Koninklijke Philips N.V. Computation device and method
US10157289B2 (en) * 2016-09-26 2018-12-18 Bank Of America Corporation Progressive key rotation for format preserving encryption (FPE)
US20220060318A1 (en) * 2018-10-10 2022-02-24 Nippon Telegraph And Telephone Corporation Secure right shift computation system, secure division system, methods therefor, secure computation apparatus, and program
CN109756231B (zh) * 2018-12-27 2023-01-31 北京思朗科技有限责任公司 循环移位处理装置及方法
US11632231B2 (en) * 2020-03-05 2023-04-18 Novatek Microelectronics Corp. Substitute box, substitute method and apparatus thereof
KR20230110668A (ko) 2022-01-16 2023-07-25 주식회사 네이처라인즈 반려동물용 휠 운동장치

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2641285B2 (ja) * 1988-05-23 1997-08-13 三菱電機株式会社 ガロア体除算回路及び乗除算共用回路
JPH0651698A (ja) * 1992-06-03 1994-02-25 Nippon Telegr & Teleph Corp <Ntt> データ攪拌装置およびデータ攪拌方法
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
US5623549A (en) * 1995-01-30 1997-04-22 Ritter; Terry F. Cipher mechanisms with fencing and balanced block mixing
US5673319A (en) * 1995-02-06 1997-09-30 International Business Machines Corporation Block cipher mode of operation for secure, length-preserving encryption
US5594797A (en) * 1995-02-22 1997-01-14 Nokia Mobile Phones Variable security level encryption
JP2772937B2 (ja) * 1995-07-11 1998-07-09 太陽誘電株式会社 チップ型電子部品の製造方法
EP0790595B1 (en) * 1995-09-05 2005-12-28 Mitsubishi Denki Kabushiki Kaisha Data conversion apparatus and data conversion method
JPH0990870A (ja) * 1995-09-27 1997-04-04 Nec Corp 基本変換方法、暗号化方法、基本変換回路および暗号装置
JPH09269727A (ja) * 1996-03-29 1997-10-14 Toshiba Corp 暗号化方法および暗号化装置
KR100473536B1 (ko) * 1996-05-22 2005-05-16 마츠시타 덴끼 산교 가부시키가이샤 기기간통신의안전성을확보하는암호화장치및통신시스템
US6028939A (en) * 1997-01-03 2000-02-22 Redcreek Communications, Inc. Data security system and method
JP3515306B2 (ja) * 1997-01-29 2004-04-05 日本電信電話株式会社 逆元演算装置
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
JP3351305B2 (ja) * 1997-08-07 2002-11-25 日本電気株式会社 暗号装置及び暗号装置を実現するプログラムを記録したコンピューターが読みとり可能な記録媒体
US6510228B2 (en) * 1997-09-22 2003-01-21 Qualcomm, Incorporated Method and apparatus for generating encryption stream ciphers
KR100296958B1 (ko) * 1998-05-06 2001-09-22 이석우 블록 데이터 암호화 장치
US6269163B1 (en) * 1998-06-15 2001-07-31 Rsa Security Inc. Enhanced block ciphers with data-dependent rotations
JP3600454B2 (ja) * 1998-08-20 2004-12-15 株式会社東芝 暗号化・復号装置、暗号化・復号方法、およびそのプログラム記憶媒体
JP2000066586A (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
TW556111B (en) * 1999-08-31 2003-10-01 Toshiba Corp Extended key generator, encryption/decryption unit, extended key generation method, and storage medium
TWI275049B (en) * 2000-03-09 2007-03-01 Nippon Telegraph & Telephone Block cipher apparatus using auxiliary transformation

Also Published As

Publication number Publication date
US7822196B2 (en) 2010-10-26
KR20040066870A (ko) 2004-07-27
ES2616544T3 (es) 2017-06-13
AU2003213315B2 (en) 2004-04-01
KR20020016624A (ko) 2002-03-04
EP1193665B8 (en) 2012-07-11
ES2405942T3 (es) 2013-06-04
CN1734527A (zh) 2006-02-15
EP1686719B1 (en) 2008-12-31
ES2407463T3 (es) 2013-06-12
ATE431983T1 (de) 2009-06-15
EP1193665A1 (en) 2002-04-03
KR100465072B1 (ko) 2005-01-13
ES2319560T3 (es) 2009-05-08
CN1364284A (zh) 2002-08-14
AU2003213318B2 (en) 2004-07-15
JP4127472B2 (ja) 2008-07-30
ES2329819T3 (es) 2009-12-01
CA2449672A1 (en) 2001-09-13
EP1193665A4 (en) 2006-06-14
AU2003213317A1 (en) 2003-08-14
CA2449662A1 (en) 2001-09-13
KR20040066877A (ko) 2004-07-27
KR100465073B1 (ko) 2005-01-13
CA2449662C (en) 2004-08-17
KR20040066874A (ko) 2004-07-27
NO333209B1 (no) 2013-04-08
US20020159599A1 (en) 2002-10-31
CN100557663C (zh) 2009-11-04
ATE419692T1 (de) 2009-01-15
AU2003213315A1 (en) 2003-08-14
AU4105801A (en) 2001-09-17
EP1689114B1 (en) 2009-07-15
ES2382454T3 (es) 2012-06-08
SG124291A1 (en) 2006-08-30
CN1734527B (zh) 2011-04-06
KR100465071B1 (ko) 2005-01-13
AU767323B2 (en) 2003-11-06
CN100583192C (zh) 2010-01-20
CA2373432A1 (en) 2001-09-13
EP1686720A1 (en) 2006-08-02
AU2003213318A1 (en) 2003-08-14
US20060050874A1 (en) 2006-03-09
CA2449665C (en) 2005-06-21
JP5242642B2 (ja) 2013-07-24
DK1686720T3 (da) 2009-07-20
EP1686720B1 (en) 2009-05-20
SG124293A1 (en) 2006-08-30
DK1686722T3 (da) 2017-02-20
KR100465074B1 (ko) 2005-01-13
KR100449594B1 (ko) 2004-09-22
DE60137269D1 (de) 2009-02-12
EP1686722B1 (en) 2016-12-07
DE60138773D1 (de) 2009-07-02
MXPA01011323A (es) 2003-08-01
EP1686722A1 (en) 2006-08-02
CA2449669A1 (en) 2001-09-13
JP2011018065A (ja) 2011-01-27
CA2449672C (en) 2005-05-17
WO2001067425A1 (fr) 2001-09-13
DK1689114T3 (da) 2009-09-07
US20060045265A1 (en) 2006-03-02
EP1689114A3 (en) 2006-09-06
JP4598744B2 (ja) 2010-12-15
US7760870B2 (en) 2010-07-20
KR20040066871A (ko) 2004-07-27
EP1689113A3 (en) 2006-08-30
CA2373432C (en) 2005-02-08
US20060050873A1 (en) 2006-03-09
DK1689113T3 (da) 2013-03-25
CN1734526B (zh) 2013-09-18
EP1689114A2 (en) 2006-08-09
EP1686721A1 (en) 2006-08-02
KR100468338B1 (ko) 2005-01-28
ATE545991T1 (de) 2012-03-15
NO20015461D0 (no) 2001-11-08
EP1686719A1 (en) 2006-08-02
KR100465075B1 (ko) 2005-01-13
US7697684B2 (en) 2010-04-13
CN100392688C (zh) 2008-06-04
DK1686721T3 (da) 2013-03-25
US7760871B2 (en) 2010-07-20
EP1689113A2 (en) 2006-08-09
EP1686721B1 (en) 2013-03-06
US20060050872A1 (en) 2006-03-09
AU2003213317B2 (en) 2004-04-01
US7864950B2 (en) 2011-01-04
ES2327263T3 (es) 2009-10-27
KR20040066876A (ko) 2004-07-27
CA2449665A1 (en) 2001-09-13
EP1689113B1 (en) 2013-03-06
DK1686719T3 (da) 2009-03-30
CA2449669C (en) 2005-02-15
CN1808526A (zh) 2006-07-26
EP1193665B1 (en) 2012-02-15
DE60139280D1 (de) 2009-08-27
KR20040066872A (ko) 2004-07-27
SG124294A1 (en) 2006-08-30
AU2003213312C1 (en) 2004-11-25
KR100465070B1 (ko) 2005-01-13
JP2007041620A (ja) 2007-02-15
AU2003213312B2 (en) 2004-03-25
AU2003213312A1 (en) 2003-08-14
CN1734526A (zh) 2006-02-15
CN1737880A (zh) 2006-02-22
TWI275049B (en) 2007-03-01
DK1193665T3 (da) 2012-04-02
NO20015461L (no) 2002-01-07
KR20040066875A (ko) 2004-07-27

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