EP 0923829 A2 19990623 - INSTRUMENT FOR MAKING SECURE DATA EXCHANGES
Title (en)
INSTRUMENT FOR MAKING SECURE DATA EXCHANGES
Title (de)
EINRICHTUNG ZUM GESICHERTEN DATENAUSTAUSCH
Title (fr)
INSTRUMENT DE SECURISATION D'ECHANGES DE DONNEES
Publication
Application
Priority
- FR 9701542 W 19970901
- FR 9610781 A 19960904
- FR 9706474 A 19970527
Abstract (en)
[origin: WO9810563A2] The invention concerns an instrument for the safe encryption/decryption of messages exchanged between the users of a network of a plurality of users, each being able to transmit and receive an encrypted or sealed message. It is characterised in that it comprises for each user a device (E1) including an integrated circuit with memory zones (2, 3), a microprocessor (1) capable of executing an algorithm and of controlling access to these zones (2, 3) depending on the nature of the operation requested to the microprocessor by the operator who has the device and selected among operations involving encryption (6, 7), computing a key to be communicated (8) and decryption (9. 10), the memory zones (2 and 3) containing two types of masked base keys of which one base key (T11) of the first type is particular to each device (E1) and of which at least one base key (U2) of the second type is common to all the devices.
IPC 1-7
IPC 8 full level
CPC (source: EP US)
H04L 9/0822 (2013.01 - EP US); H04L 9/0825 (2013.01 - EP US); H04L 9/083 (2013.01 - EP US); H04L 2209/04 (2013.01 - EP US)
Citation (search report)
See references of WO 9810563A2
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 9810563 A2 19980312; WO 9810563 A3 19980522; EP 0923829 A2 19990623; US 6493823 B1 20021210
DOCDB simple family (application)
FR 9701542 W 19970901; EP 97938966 A 19970901; US 25427099 A 19990303