Global Patent Index - EP 0972374 A1

EP 0972374 A1 20000119 - METHOD AND APPARATUS FOR EFFICIENT AUTHENTICATION AND INTEGRITY CHECKING USING HIERARCHICAL HASHING

Title (en)

METHOD AND APPARATUS FOR EFFICIENT AUTHENTICATION AND INTEGRITY CHECKING USING HIERARCHICAL HASHING

Title (de)

VERFAHREN UND VORRICHTUNG ZUR EFFIZIENTEN AUTHENTIFIZIERUNG UND PRÜFUNG DER INTEGRITÄT UNTER VERWENDUNG VON HIERARCHISCHEM HASHING

Title (fr)

PROCEDE ET APPAREIL EFFICACE D'AUTHENTIFICATION ET DE VERIFICATION D'INTEGRITE UTILISANT LE HACHAGE HIERARCHIQUE

Publication

EP 0972374 A1 (EN)

Application

EP 99905733 A

Priority

  • US 9902417 W
  • US 1853198 A

Abstract (en)

[origin: WO9940702A1] In accordance with the present invention a method is provided for signing data and verifying data. Data signing involves dividing a data set into packets, hashing the data within each of the packets to produce a hash block including hash values and applying a digital signature to the hash block. The verifying process involves receiving a packet including data, a hash block and a digital signature, verifying the digital signature, hashing the data to produce hash values and comparing the hash values to values in the hash block.

IPC 1-7

H04L 9/32

IPC 8 full level

G09C 1/00 (2006.01); H04L 9/32 (2006.01)

CPC (source: EP)

H04L 9/3236 (2013.01); H04L 9/3247 (2013.01); H04L 2209/38 (2013.01); H04L 2209/80 (2013.01)

Citation (search report)

See references of WO 9940702A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family (publication)

WO 9940702 A1 19990812; AU 2583099 A 19990823; EP 0972374 A1 20000119; JP 2001519930 A 20011023

DOCDB simple family (application)

US 9902417 W 19990204; AU 2583099 A 19990204; EP 99905733 A 19990204; JP 54061899 A 19990204