GB9814003D0 - Encryption and decryption key arrangements - Google Patents
Encryption and decryption key arrangementsInfo
- Publication number
- GB9814003D0 GB9814003D0 GB9814003A GB9814003A GB9814003D0 GB 9814003 D0 GB9814003 D0 GB 9814003D0 GB 9814003 A GB9814003 A GB 9814003A GB 9814003 A GB9814003 A GB 9814003A GB 9814003 D0 GB9814003 D0 GB 9814003D0
- 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.)
- Granted
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.
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 |
JP2000557580A JP2002519940A (en) | 1998-06-30 | 1999-06-30 | Apparatus for encryption and decryption key construction |
EP99928133A EP1099323A1 (en) | 1998-06-30 | 1999-06-30 | Encryption and decryption key arrangements |
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 true GB9814003D0 (en) | 1998-08-26 |
GB2339121A GB2339121A (en) | 2000-01-12 |
GB2339121B 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) |
Family Cites Families (6)
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 |
US5425103A (en) * | 1994-03-14 | 1995-06-13 | Shaw; William Y. | Variable-key cryptography 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 |
-
1998
- 1998-06-30 GB GB9814003A patent/GB2339121B/en not_active Expired - Fee Related
-
1999
- 1999-06-30 WO PCT/GB1999/002052 patent/WO2000001110A1/en not_active Application Discontinuation
- 1999-06-30 JP JP2000557580A patent/JP2002519940A/en active Pending
- 1999-06-30 EP EP99928133A patent/EP1099323A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
JP2002519940A (en) | 2002-07-02 |
GB2339121A (en) | 2000-01-12 |
GB2339121B (en) | 2003-03-05 |
WO2000001110A1 (en) | 2000-01-06 |
EP1099323A1 (en) | 2001-05-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20030605 |