DE69937007D1 - Verfahren und vorrichtung zur verschlüsselung und entschlüsselung von daten - Google Patents

Verfahren und vorrichtung zur verschlüsselung und entschlüsselung von daten

Info

Publication number
DE69937007D1
DE69937007D1 DE69937007T DE69937007T DE69937007D1 DE 69937007 D1 DE69937007 D1 DE 69937007D1 DE 69937007 T DE69937007 T DE 69937007T DE 69937007 T DE69937007 T DE 69937007T DE 69937007 D1 DE69937007 D1 DE 69937007D1
Authority
DE
Germany
Prior art keywords
encryption
decomposition
data
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
DE69937007T
Other languages
English (en)
Other versions
DE69937007T2 (de
Inventor
Feng Bao
Huijie Robert Deng
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Agency for Science Technology and Research Singapore
Original Assignee
Agency for Science Technology and Research Singapore
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 Agency for Science Technology and Research Singapore filed Critical Agency for Science Technology and Research Singapore
Application granted granted Critical
Publication of DE69937007D1 publication Critical patent/DE69937007D1/de
Publication of DE69937007T2 publication Critical patent/DE69937007T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • H04L9/0637—Modes of operation, e.g. cipher block chaining [CBC], electronic codebook [ECB] or Galois/counter mode [GCM]
    • 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
    • H04L9/065—Encryption by serially and continuously modifying data stream elements, e.g. stream cipher systems, RC4, SEAL or A5/3
    • H04L9/0656—Pseudorandom key sequence combined element-for-element with data sequence, e.g. one-time-pad [OTP] or Vernam's cipher
    • H04L9/0662—Pseudorandom key sequence combined element-for-element with data sequence, e.g. one-time-pad [OTP] or Vernam's cipher with particular pseudorandom sequence generator
    • 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
    • H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
    • H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
    • H04L9/0838—Key agreement, i.e. key establishment technique in which a shared key is derived by parties as a function of information contributed by, or associated with, each of these

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Storage Device Security (AREA)
DE69937007T 1999-03-22 1999-03-22 Verfahren und vorrichtung zur verschlüsselung und entschlüsselung von daten Expired - Fee Related DE69937007T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SG1999/000020 WO2000057595A1 (en) 1999-03-22 1999-03-22 Method and apparatus for encrypting and decrypting data

Publications (2)

Publication Number Publication Date
DE69937007D1 true DE69937007D1 (de) 2007-10-11
DE69937007T2 DE69937007T2 (de) 2008-05-21

Family

ID=20430193

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69937007T Expired - Fee Related DE69937007T2 (de) 1999-03-22 1999-03-22 Verfahren und vorrichtung zur verschlüsselung und entschlüsselung von daten

Country Status (4)

Country Link
US (1) US7110539B1 (de)
EP (1) EP1161811B1 (de)
DE (1) DE69937007T2 (de)
WO (1) WO2000057595A1 (de)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
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US6909786B2 (en) * 2001-01-09 2005-06-21 D'crypt Private Limited Cryptographic trap door with timed lock and controlled escrow
US20110066857A1 (en) * 2001-06-22 2011-03-17 Probst David K Method for secure delivery of digital content
KR100593491B1 (ko) * 2001-07-17 2006-06-30 샤프 가부시키가이샤 프로세스 과정에서 암호화된 데이터의 위조 검출 데이터를발생시키는 장치 및 방법
US8117450B2 (en) * 2001-10-11 2012-02-14 Hewlett-Packard Development Company, L.P. System and method for secure data transmission
EP1576567A1 (de) * 2002-12-18 2005-09-21 Koninklijke Philips Electronics N.V. Schlüsselsynchronisation in einem visuellen kryptographischen system
DE10332094A1 (de) * 2003-07-15 2005-03-10 Fujitsu Siemens Computers Gmbh Verschlüsselungssystem und Verfahren zur Ver-/Entschlüsselung sensibler Daten
US7496347B2 (en) * 2004-11-12 2009-02-24 Velocita Wireless Llc Method and apparatus for providing secure wireless communication
US8155306B2 (en) * 2004-12-09 2012-04-10 Intel Corporation Method and apparatus for increasing the speed of cryptographic processing
US20080276309A1 (en) * 2006-07-06 2008-11-06 Edelman Lance F System and Method for Securing Software Applications
US8130956B2 (en) * 2007-08-02 2012-03-06 International Business Machines Corporation Efficient and low power encrypting and decrypting of data
US8209334B1 (en) * 2007-12-28 2012-06-26 Don Doerner Method to direct data to a specific one of several repositories
JP2010021888A (ja) * 2008-07-11 2010-01-28 Toshiba Corp 通信装置、鍵サーバ及び管理サーバ
US20100250968A1 (en) * 2009-03-25 2010-09-30 Lsi Corporation Device for data security using user selectable one-time pad
FR2949010A1 (fr) * 2009-08-05 2011-02-11 St Microelectronics Rousset Procede de contremesure pour proteger des donnees memorisees
US9208333B2 (en) 2010-03-31 2015-12-08 British Telecommunications Public Limited Company Secure data recorder
US9779100B2 (en) 2014-07-14 2017-10-03 Secured2 Corporation Data conversion method
WO2016010901A1 (en) * 2014-07-14 2016-01-21 CRAM Worldwide, Inc. Data conversion device
US9779148B2 (en) 2014-07-14 2017-10-03 Secured2 Corporation Data conversion system
US9779101B2 (en) 2014-07-14 2017-10-03 Secured2 Corporation Data conversion device
CN104135371B (zh) * 2014-08-18 2017-07-14 新华三技术有限公司 一种密码保存方法及装置
US9923719B2 (en) 2014-12-09 2018-03-20 Cryptography Research, Inc. Location aware cryptography
US10333699B1 (en) 2015-09-30 2019-06-25 Cryptography Research, Inc. Generating a pseudorandom number based on a portion of shares used in a cryptographic operation
US10841086B2 (en) 2018-02-06 2020-11-17 Wickr, Inc. Facilitating communications using hybrid cryptography
US10819510B2 (en) * 2018-02-06 2020-10-27 Wickr Inc. Facilitating communications using hybrid cryptography

Family Cites Families (15)

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Publication number Priority date Publication date Assignee Title
US4747139A (en) * 1984-08-27 1988-05-24 Taaffe James L Software security method and systems
US4731843A (en) * 1985-12-30 1988-03-15 Paradyne Corporation Method and device of increasing the execution speed of cipher feedback mode of the DES by an arbitrary multiplier
US5412730A (en) * 1989-10-06 1995-05-02 Telequip Corporation Encrypted data transmission system employing means for randomly altering the encryption keys
NZ277128A (en) * 1993-12-01 1998-04-27 William Michael Raike Public key encryption system and mixture generator
GB2288519A (en) 1994-04-05 1995-10-18 Ibm Data encryption
ES2171568T3 (es) 1994-09-09 2002-09-16 Titan Corp Sistema de acceso condicional.
JP3647907B2 (ja) * 1994-09-09 2005-05-18 富士通株式会社 暗号化ソフトウェアの解凍システム
CA2212574C (en) * 1995-02-13 2010-02-02 Electronic Publishing Resources, Inc. Systems and methods for secure transaction management and electronic rights protection
US5664016A (en) * 1995-06-27 1997-09-02 Northern Telecom Limited Method of building fast MACS from hash functions
US5677956A (en) * 1995-09-29 1997-10-14 Innovative Computing Group Inc Method and apparatus for data encryption/decryption using cellular automata transform
US6505170B1 (en) * 1996-10-04 2003-01-07 Western Union North America Distributed device management system
JPH10178421A (ja) 1996-10-18 1998-06-30 Toshiba Corp パケット処理装置、移動計算機装置、パケット転送方法及びパケット処理方法
US5956402A (en) * 1997-03-07 1999-09-21 At&T Corp. Passwordless secure and efficient remote data update
US6182216B1 (en) * 1997-09-17 2001-01-30 Frank C. Luyster Block cipher method
US6628786B1 (en) * 1997-09-30 2003-09-30 Sun Microsystems, Inc. Distributed state random number generator and method for utilizing same

Also Published As

Publication number Publication date
DE69937007T2 (de) 2008-05-21
EP1161811B1 (de) 2007-08-29
US7110539B1 (en) 2006-09-19
WO2000057595A1 (en) 2000-09-28
EP1161811A1 (de) 2001-12-12

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee