Global patent index - EP 1008251 A1

EP 1008251 A1 2000-06-14 - SYSTEM FOR GENERATING SUB-KEYS

Title (en)

SYSTEM FOR GENERATING SUB-KEYS

Title (de)

VORRICHTUNG ZUR ERZEUGUNG VON TEILSCHLÜSSELN

Title (fr)

DISPOSITIF DE GENERATION DE SOUS-CLES

Publication

EP 1008251 A1 (EN)

Application

EP 98935142 A

Priority

  • GB 9802129 W
  • GB 9718200 A

Abstract (en)

[origin: GB2329096A] A facitity for enhancing data security comprises a plurality of encryption modules, an interface and a data processing machine (10). The encryption modules are each responsible to a sub-key for encrypting data. The interface is operative to receive a master key, and the data processing machine (10) is operative to create a series of sub-keys for use with the modules. The machine (10) is operative to create each of the sub-keys by means of a hash function of the master key.

IPC 1-7 (main, further and additional classification)

H04L 9/08

IPC 8 full level (invention and additional information)

H04L 9/06 (2006.01); H04L 9/08 (2006.01)

CPC (invention and additional information)

H04L 9/0643 (2013.01); H04L 2209/24 (2013.01)

Citation (search report)

See references of WO 9912309A1

Designated contracting state (EPC)

DE FR GB

EPO simple patent family

GB 2329096 A 19990310; GB 9718200 D0 19971105; AU 8450198 A 19990322; EP 1008251 A1 20000614; WO 9912309 A1 19990311; ZA 9806026 B 19990128

INPADOC legal status

2003-07-16 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20030305

2001-07-18 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20010605

2000-06-14 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000309

2000-06-14 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE FR GB