BR8001992A - Sistema de cifracao/decifracao de dados e processo de geracao de palavra-chave - Google Patents

Sistema de cifracao/decifracao de dados e processo de geracao de palavra-chave

Info

Publication number
BR8001992A
BR8001992A BR8001992A BR8001992A BR8001992A BR 8001992 A BR8001992 A BR 8001992A BR 8001992 A BR8001992 A BR 8001992A BR 8001992 A BR8001992 A BR 8001992A BR 8001992 A BR8001992 A BR 8001992A
Authority
BR
Brazil
Prior art keywords
decifration
generation process
data encryption
keyword generation
keyword
Prior art date
Application number
BR8001992A
Other languages
English (en)
Inventor
G Hogg
R Newman
R Pfeifer
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Publication of BR8001992A publication Critical patent/BR8001992A/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
    • H04L9/065—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
    • H04L9/0668—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 producing a non-linear pseudorandom sequence
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/06—Network architectures or network communication protocols for network security for supporting key management in a packet data network
    • H04L63/061—Network architectures or network communication protocols for network security for supporting key management in a packet data network for key exchange, e.g. in peer-to-peer networks

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Storage Device Security (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
BR8001992A 1979-04-02 1980-04-01 Sistema de cifracao/decifracao de dados e processo de geracao de palavra-chave BR8001992A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/025,951 US4281216A (en) 1979-04-02 1979-04-02 Key management for encryption/decryption systems

Publications (1)

Publication Number Publication Date
BR8001992A true BR8001992A (pt) 1980-11-25

Family

ID=21828960

Family Applications (1)

Application Number Title Priority Date Filing Date
BR8001992A BR8001992A (pt) 1979-04-02 1980-04-01 Sistema de cifracao/decifracao de dados e processo de geracao de palavra-chave

Country Status (4)

Country Link
US (1) US4281216A (pt)
EP (1) EP0023074A1 (pt)
JP (1) JPS55156444A (pt)
BR (1) BR8001992A (pt)

Families Citing this family (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1176335A (en) * 1981-06-05 1984-10-16 Exide Electronics Corporation Computer communications control
DE3123167C1 (de) * 1981-06-11 1983-02-24 Siemens AG, 1000 Berlin und 8000 München Verfahren und Schaltungsanorndung zum Verteilen von Schluesseln an Schluesselgeraete
FR2523745B1 (fr) * 1982-03-18 1987-06-26 Bull Sa Procede et dispositif de protection d'un logiciel livre par un fournisseur a un utilisateur
US4538027A (en) * 1982-07-28 1985-08-27 Rca Corporation System for inputting a security code to a computer
DE3244538A1 (de) * 1982-12-02 1984-06-07 ANT Nachrichtentechnik GmbH, 7150 Backnang Schluesseleingabegeraet fuer ver- und entschluesselgeraete der geheimen nachrichtenuebertragung
US4799153A (en) * 1984-12-14 1989-01-17 Telenet Communications Corporation Method and apparatus for enhancing security of communications in a packet-switched data communications system
US4672533A (en) * 1984-12-19 1987-06-09 Noble Richard G Electronic linkage interface control security system and method
GB2173738B (en) * 1985-04-19 1989-07-12 Roneo Alcatel Ltd Secure transport of information between electronic stations
WO1987005175A1 (en) * 1986-02-24 1987-08-27 Weiss Jeffrey A Method and apparatus for distributing and protecting encryption key codes
US4916738A (en) * 1986-11-05 1990-04-10 International Business Machines Corp. Remote access terminal security
US4811377A (en) * 1987-07-31 1989-03-07 Motorola, Inc. Secure transfer of radio specific data
US4881263A (en) * 1987-09-25 1989-11-14 Digital Equipment Corporation Apparatus and method for secure transmission of data over an unsecure transmission channel
US4926475A (en) * 1988-11-30 1990-05-15 Motorola, Inc. Data encryption key failure monitor
US5237610A (en) * 1990-02-01 1993-08-17 Scientific-Atlanta, Inc. Independent external security module for a digitally upgradeable television signal decoder
US5029207A (en) * 1990-02-01 1991-07-02 Scientific-Atlanta, Inc. External security module for a television signal decoder
DE4010305A1 (de) * 1990-03-30 1991-10-02 Gao Ges Automation Org Zufallszahlengenerator
US5173938A (en) * 1990-09-27 1992-12-22 Motorola, Inc. Key management system
US5093860A (en) * 1990-09-27 1992-03-03 Motorola, Inc. Key management system
US5146497A (en) * 1991-02-27 1992-09-08 Motorola, Inc. Group rekey in a communication system
WO1993023938A1 (en) * 1992-05-15 1993-11-25 Tecsec Incorporated Voice and data encryption device
US5661803A (en) * 1995-03-31 1997-08-26 Pitney Bowes Inc. Method of token verification in a key management system
US5812666A (en) * 1995-03-31 1998-09-22 Pitney Bowes Inc. Cryptographic key management and validation system
US5680456A (en) * 1995-03-31 1997-10-21 Pitney Bowes Inc. Method of manufacturing generic meters in a key management system
US5742682A (en) * 1995-03-31 1998-04-21 Pitney Bowes Inc. Method of manufacturing secure boxes in a key management system
US5838790A (en) * 1996-04-19 1998-11-17 Juno Online Services, L.P. Advertisement authentication system in which advertisements are downloaded for off-line display
US5878135A (en) * 1996-11-27 1999-03-02 Thomson Consumer Electronics, Inc. Decoding system for processing encrypted broadcast, cable or satellite video data
US5850445A (en) * 1997-01-31 1998-12-15 Synacom Technology, Inc. Authentication key management system and method
US6738907B1 (en) 1998-01-20 2004-05-18 Novell, Inc. Maintaining a soft-token private key store in a distributed environment
US6931531B1 (en) * 1998-09-02 2005-08-16 Matsushita Electric Industrial Co., Ltd. Image object recording, compression, and encryption method and system
WO2000025466A1 (en) 1998-10-23 2000-05-04 L-3 Communications Corporation Apparatus and methods for managing key material in heterogeneous cryptographic assets
AU1517600A (en) 1998-10-28 2000-05-15 L-3 Communications Corporation Encryption and authentication methods and apparatus for securing telephone communications
FR2795838B1 (fr) * 1999-06-30 2001-08-31 Bull Cp8 Procede de securisation du traitement d'une information sensible dans un module de securite monolithique, et module de securite associe
JP2002229861A (ja) * 2001-02-07 2002-08-16 Hitachi Ltd 著作権保護機能つき記録装置
US7127618B2 (en) * 2001-06-28 2006-10-24 Koninklijke Philips Electronics N.V. Data protection via reversible data damage
US7212638B2 (en) * 2002-11-13 2007-05-01 Harris Corporation Wireless cryptographic fill system and method
US7549047B2 (en) * 2002-11-21 2009-06-16 Xerox Corporation Method and system for securely sharing files
US20050100166A1 (en) * 2003-11-10 2005-05-12 Parc Inc. Systems and methods for authenticating communications in a network medium
GB2431250A (en) * 2005-10-11 2007-04-18 Hewlett Packard Development Co Data transfer system
US20080090452A1 (en) * 2006-05-17 2008-04-17 David Rose Battery adapter
KR100766313B1 (ko) * 2006-05-30 2007-10-11 삼성전자주식회사 이동통신단말기에서 보안 키의 암호화 장치 및 방법
GB0707928D0 (en) * 2007-04-25 2007-05-30 Delivery Works Ltd Delivery system
US8625802B2 (en) * 2010-06-16 2014-01-07 Porticor Ltd. Methods, devices, and media for secure key management in a non-secured, distributed, virtualized environment with applications to cloud-computing security and management
US8688987B2 (en) 2012-07-30 2014-04-01 Honeywell International Inc. Secure key distribution with general purpose mobile device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4182933A (en) * 1969-02-14 1980-01-08 The United States Of America As Represented By The Secretary Of The Army Secure communication system with remote key setting
US3781472A (en) * 1971-04-15 1973-12-25 Datotek Digital data ciphering technique
US3790768A (en) * 1972-09-28 1974-02-05 Prayfel Inc Random number generator
US4133973A (en) * 1976-11-10 1979-01-09 Datotek, Inc. Digital cryptographic system having synchronous and asynchronous capabilities
US4120030A (en) * 1977-03-11 1978-10-10 Kearney & Trecker Corporation Computer software security system
US4151404A (en) * 1977-10-31 1979-04-24 Mdh Industries, Inc. Random digit generator
US4193131A (en) * 1977-12-05 1980-03-11 International Business Machines Corporation Cryptographic verification of operational keys used in communication networks

Also Published As

Publication number Publication date
EP0023074A1 (en) 1981-01-28
JPS55156444A (en) 1980-12-05
US4281216A (en) 1981-07-28

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