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-chaveInfo
- 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
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
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)
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 |
US5093860A (en) * | 1990-09-27 | 1992-03-03 | Motorola, Inc. | Key management system |
US5173938A (en) * | 1990-09-27 | 1992-12-22 | Motorola, Inc. | Key management system |
US5146497A (en) * | 1991-02-27 | 1992-09-08 | Motorola, Inc. | Group rekey in a communication system |
US5410599A (en) * | 1992-05-15 | 1995-04-25 | Tecsec, Incorporated | Voice and data encryption device |
US5742682A (en) * | 1995-03-31 | 1998-04-21 | Pitney Bowes Inc. | Method of manufacturing secure boxes in a key management system |
US5661803A (en) * | 1995-03-31 | 1997-08-26 | Pitney Bowes Inc. | Method of token verification in a key management system |
US5680456A (en) * | 1995-03-31 | 1997-10-21 | Pitney Bowes Inc. | Method of manufacturing generic meters in a key management system |
US5812666A (en) * | 1995-03-31 | 1998-09-22 | Pitney Bowes Inc. | Cryptographic key management and validation 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 |
JP2002529008A (ja) | 1998-10-23 | 2002-09-03 | エル3 コミュニケーションズ コーポレイション | 異質の暗号資産におけるキイの資料を管理する装置および方法 |
US6266418B1 (en) | 1998-10-28 | 2001-07-24 | L3-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)
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 |
-
1979
- 1979-04-02 US US06/025,951 patent/US4281216A/en not_active Expired - Lifetime
-
1980
- 1980-03-25 EP EP80300929A patent/EP0023074A1/en not_active Ceased
- 1980-04-01 BR BR8001992A patent/BR8001992A/pt unknown
- 1980-04-01 JP JP4275080A patent/JPS55156444A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
US4281216A (en) | 1981-07-28 |
EP0023074A1 (en) | 1981-01-28 |
JPS55156444A (en) | 1980-12-05 |
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