EP 1348276 A2 20031001 - THRESHOLD CRYPTOGRAPHY SCHEME FOR CONDITIONAL ACCESS SYSTEMS
Title (en)
THRESHOLD CRYPTOGRAPHY SCHEME FOR CONDITIONAL ACCESS SYSTEMS
Title (de)
SCHWELLWERTKRYPTOGRAPHIEVERFAHREN FÜR SYSTEM MIT BEDINGTEM ZUGRIFF
Title (fr)
SCHEMA CRYPTOGRAPHIQUE A SEUIL DESTINE A DES SYSTEMES A ACCES CONDITIONNEL
Publication
Application
Priority
- US 0129790 W 20010924
- US 25378100 P 20001129
Abstract (en)
[origin: WO0245340A2] A method and apparatus for authenticating a message, said method including receiving, at a device, data representative of a first share, consctruction a key using said first share and at least two additional shares, said at least two additional shares being stred at said device; and authenticating a message using said consctructed key.
IPC 1-7
IPC 8 full level
G06F 21/60 (2013.01); G06F 21/62 (2013.01); H04L 9/08 (2006.01); H04L 9/32 (2006.01); H04N 7/16 (2011.01); H04N 7/167 (2011.01)
CPC (source: EP KR)
H04L 9/00 (2013.01 - KR); H04L 9/085 (2013.01 - EP); H04N 7/163 (2013.01 - EP); H04N 7/1675 (2013.01 - EP); H04N 21/25816 (2013.01 - EP); H04N 21/26606 (2013.01 - EP)
Citation (search report)
See references of WO 0245337A2
Designated contracting state (EPC)
AT BE CH CY DE FR GB IT LI
DOCDB simple family (publication)
WO 0245340 A2 20020606; WO 0245340 A3 20021017; AU 1297702 A 20020611; AU 9629401 A 20020611; BR 0115573 A 20030729; BR 0115575 A 20030729; CN 1483259 A 20040317; CN 1484901 A 20040324; EP 1348276 A2 20031001; EP 1366594 A2 20031203; JP 2004515159 A 20040520; JP 2004515160 A 20040520; KR 20030094217 A 20031211; KR 20040010565 A 20040131; MX PA03004599 A 20030904; MX PA03004822 A 20030925; WO 0245337 A2 20020606; WO 0245337 A3 20020906
DOCDB simple family (application)
US 0129842 W 20010924; AU 1297702 A 20010924; AU 9629401 A 20010924; BR 0115573 A 20010924; BR 0115575 A 20010924; CN 01819688 A 20010924; CN 01819723 A 20010924; EP 01977153 A 20010924; EP 01981324 A 20010924; JP 2002546354 A 20010924; JP 2002546357 A 20010924; KR 20037006413 A 20030512; KR 20037006964 A 20030523; MX PA03004599 A 20010924; MX PA03004822 A 20010924; US 0129790 W 20010924