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GB2339121B - Encryption and decryption key arrangements - Google Patents

Encryption and decryption key arrangements

Info

Publication number
GB2339121B
GB2339121B GB9814003A GB9814003A GB2339121B GB 2339121 B GB2339121 B GB 2339121B GB 9814003 A GB9814003 A GB 9814003A GB 9814003 A GB9814003 A GB 9814003A GB 2339121 B GB2339121 B GB 2339121B
Authority
GB
United Kingdom
Prior art keywords
characters
encryption
decryption key
key arrangements
primitives
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
GB9814003A
Other versions
GB9814003D0 (en
GB2339121A (en
Inventor
William Mcmullan Hawthorne
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.)
Chantilley Corp Ltd
Original Assignee
Chantilley Corp 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 Chantilley Corp Ltd filed Critical Chantilley Corp Ltd
Priority to GB9814003A priority Critical patent/GB2339121B/en
Publication of GB9814003D0 publication Critical patent/GB9814003D0/en
Priority to PCT/GB1999/002052 priority patent/WO2000001110A1/en
Priority to EP99928133A priority patent/EP1099323A1/en
Priority to JP2000557580A priority patent/JP2002519940A/en
Publication of GB2339121A publication Critical patent/GB2339121A/en
Application granted granted Critical
Publication of GB2339121B publication Critical patent/GB2339121B/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)
  • Facsimile Transmission Control (AREA)
  • Storage Device Security (AREA)

Abstract

An apparatus, arranged to encrypt or decrypt messages, is arranged to generate a session key of a variable selected number of characters and to distribute these characters in sequence into a predetermined number of groups to form a corresponding number of primitives: these primitives are used, in accordance with a predetermined algorithm, to form a cypher key stream the characters of which are used in sequence to encrypt or decrypt successive characters (or elements) of a message.
GB9814003A 1998-06-30 1998-06-30 Encryption and decryption key arrangements Expired - Fee Related GB2339121B (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB9814003A GB2339121B (en) 1998-06-30 1998-06-30 Encryption and decryption key arrangements
PCT/GB1999/002052 WO2000001110A1 (en) 1998-06-30 1999-06-30 Encryption and decryption key arrangements
EP99928133A EP1099323A1 (en) 1998-06-30 1999-06-30 Encryption and decryption key arrangements
JP2000557580A JP2002519940A (en) 1998-06-30 1999-06-30 Apparatus for encryption and decryption key construction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9814003A GB2339121B (en) 1998-06-30 1998-06-30 Encryption and decryption key arrangements

Publications (3)

Publication Number Publication Date
GB9814003D0 GB9814003D0 (en) 1998-08-26
GB2339121A GB2339121A (en) 2000-01-12
GB2339121B true GB2339121B (en) 2003-03-05

Family

ID=10834577

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9814003A Expired - Fee Related GB2339121B (en) 1998-06-30 1998-06-30 Encryption and decryption key arrangements

Country Status (4)

Country Link
EP (1) EP1099323A1 (en)
JP (1) JP2002519940A (en)
GB (1) GB2339121B (en)
WO (1) WO2000001110A1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2301266A (en) * 1994-03-14 1996-11-27 William Yin Shaw Variable-key cryptography system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09502845A (en) * 1993-09-14 1997-03-18 チャンティレイ・コーポレイション・リミテッド Key distribution device in encryption system
DE19581586T1 (en) * 1994-03-23 1997-05-28 Chantilley Corp Ltd Device for generating encryption / decryption lookup tables using a session key
US5594795A (en) * 1994-07-05 1997-01-14 Ericsson Inc. Method and apparatus for key transforms to discriminate between different networks
JP3294739B2 (en) * 1995-03-30 2002-06-24 三洋電機株式会社 Method for scrambling or descrambling FM multiplex broadcasting
US5828753A (en) * 1996-10-25 1998-10-27 Intel Corporation Circuit and method for ensuring interconnect security within a multi-chip integrated circuit package

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2301266A (en) * 1994-03-14 1996-11-27 William Yin Shaw Variable-key cryptography system

Also Published As

Publication number Publication date
EP1099323A1 (en) 2001-05-16
GB9814003D0 (en) 1998-08-26
JP2002519940A (en) 2002-07-02
WO2000001110A1 (en) 2000-01-06
GB2339121A (en) 2000-01-12

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Legal Events

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

Effective date: 20030605