GB2329308B - Encryption method and apparatus - Google Patents

Encryption method and apparatus

Info

Publication number
GB2329308B
GB2329308B GB9819988A GB9819988A GB2329308B GB 2329308 B GB2329308 B GB 2329308B GB 9819988 A GB9819988 A GB 9819988A GB 9819988 A GB9819988 A GB 9819988A GB 2329308 B GB2329308 B GB 2329308B
Authority
GB
United Kingdom
Prior art keywords
encryption method
encryption
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
GB9819988A
Other versions
GB2329308A (en
GB9819988D0 (en
Inventor
Mark Wentworth Rayne
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.)
Simoco International Ltd
Original Assignee
Simoco International 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 Simoco International Ltd filed Critical Simoco International Ltd
Publication of GB9819988D0 publication Critical patent/GB9819988D0/en
Publication of GB2329308A publication Critical patent/GB2329308A/en
Application granted granted Critical
Publication of GB2329308B publication Critical patent/GB2329308B/en
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
    • H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
    • H04L9/088—Usage controlling of secret information, e.g. techniques for restricting cryptographic keys to pre-authorized uses, different access levels, validity of crypto-period, different key- or password length, or different strong and weak cryptographic algorithms

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Storage Device Security (AREA)
GB9819988A 1997-09-16 1998-09-14 Encryption method and apparatus Expired - Fee Related GB2329308B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB9719726.3A GB9719726D0 (en) 1997-09-16 1997-09-16 Encryption method and apparatus

Publications (3)

Publication Number Publication Date
GB9819988D0 GB9819988D0 (en) 1998-11-04
GB2329308A GB2329308A (en) 1999-03-17
GB2329308B true GB2329308B (en) 2000-02-09

Family

ID=10819178

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB9719726.3A Pending GB9719726D0 (en) 1997-09-16 1997-09-16 Encryption method and apparatus
GB9819988A Expired - Fee Related GB2329308B (en) 1997-09-16 1998-09-14 Encryption method and apparatus

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB9719726.3A Pending GB9719726D0 (en) 1997-09-16 1997-09-16 Encryption method and apparatus

Country Status (7)

Country Link
EP (1) EP1016239A1 (en)
CN (1) CN1277769A (en)
AU (1) AU9087598A (en)
GB (2) GB9719726D0 (en)
IL (1) IL135080A0 (en)
WO (1) WO1999014887A1 (en)
ZA (1) ZA988391B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7660986B1 (en) 1999-06-08 2010-02-09 General Instrument Corporation Secure control of security mode
US7873166B2 (en) * 2005-09-13 2011-01-18 Avaya Inc. Method for undetectably impeding key strength of encryption usage for products exported outside the U.S
US20080037775A1 (en) 2006-03-31 2008-02-14 Avaya Technology Llc Verifiable generation of weak symmetric keys for strong algorithms
DE102010011657A1 (en) * 2010-03-17 2011-09-22 Siemens Aktiengesellschaft Method and apparatus for providing at least one secure cryptographic key
CN103761486A (en) * 2013-12-02 2014-04-30 苗立地 Electronic file encryption method and device
NL2019735B1 (en) * 2017-10-16 2019-04-23 Abn Amro Bank N V Secure communication system and method for transmission of messages

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2274229A (en) * 1992-12-19 1994-07-13 Ibm Cryptography system.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5073934A (en) * 1990-10-24 1991-12-17 International Business Machines Corporation Method and apparatus for controlling the use of a public key, based on the level of import integrity for the key
GB9503738D0 (en) * 1995-02-24 1995-04-19 Int Computers Ltd Cryptographic key management

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2274229A (en) * 1992-12-19 1994-07-13 Ibm Cryptography system.

Also Published As

Publication number Publication date
WO1999014887A1 (en) 1999-03-25
GB9719726D0 (en) 1998-03-18
AU9087598A (en) 1999-04-05
IL135080A0 (en) 2001-05-20
GB2329308A (en) 1999-03-17
ZA988391B (en) 2000-03-22
CN1277769A (en) 2000-12-20
GB9819988D0 (en) 1998-11-04
EP1016239A1 (en) 2000-07-05

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20110914