EP 1099323 A1 20010516 - ENCRYPTION AND DECRYPTION KEY ARRANGEMENTS
Title (en)
ENCRYPTION AND DECRYPTION KEY ARRANGEMENTS
Title (de)
VERSCHLÜSSELUNGSSCHLÜSSEL-ANORDNUNG
Title (fr)
DISPOSITIFS GENERANT DES CODES DE CHIFFREMENT ET DE DECHIFFREMENT
Publication
Application
Priority
- GB 9902052 W 19990630
- GB 9814003 A 19980630
Abstract (en)
[origin: WO0001110A1] 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.
IPC 1-7
IPC 8 full level
G09C 1/00 (2006.01); H04L 9/08 (2006.01); H04L 9/20 (2006.01)
CPC (source: EP)
H04L 9/088 (2013.01)
Citation (search report)
See references of WO 0001110A1
Designated contracting state (EPC)
DE ES FR GB IT
DOCDB simple family (publication)
GB 2339121 A 20000112; GB 2339121 B 20030305; GB 9814003 D0 19980826; EP 1099323 A1 20010516; JP 2002519940 A 20020702; WO 0001110 A1 20000106
DOCDB simple family (application)
GB 9814003 A 19980630; EP 99928133 A 19990630; GB 9902052 W 19990630; JP 2000557580 A 19990630