(19)
(11) EP 3 704 829 B8

(12) CORRECTED EUROPEAN PATENT SPECIFICATION
Note: Bibliography reflects the latest situation

(15) Correction information:
Corrected version no 1 (W1 B1)

(48) Corrigendum issued on:
05.04.2023 Bulletin 2023/14

(45) Mention of the grant of the patent:
27.07.2022 Bulletin 2022/30

(21) Application number: 17930228.6

(22) Date of filing: 31.10.2017
(51) International Patent Classification (IPC): 
H04L 9/40(2022.01)
H04L 9/06(2006.01)
H04W 12/0433(2021.01)
H04W 4/20(2009.01)
 H04L 9/08(2006.01)
H04L 9/32(2006.01)
H04L 12/28(2006.01)
H04W 4/70(2018.01)
(52) Cooperative Patent Classification (CPC):
H04L 9/0866; H04L 9/0869; H04L 9/0872; H04L 9/3239; H04L 9/3247; H04L 2209/805; H04L 63/126; H04L 63/062; H04L 63/065; H04L 63/068; H04W 4/70; H04W 4/20; H04L 12/2816; H04L 12/2807; H04W 12/0433; H04L 9/50; H04L 63/0435
(86) International application number:
PCT/US2017/059371
(87) International publication number:
WO 2019/089013 (09.05.2019 Gazette 2019/19)

(54)

CRYPTOGRAPHIC KEY GENERATION SYSTEM AND METHOD

SYSTEM UND VERFAHREN ZUR ERZEUGUNG EINES KRYPTOGRAFISCHEN SCHLÜSSELS

SYSTÈME ET PROCÉDÉ DE GÉNÉRATION DE CLÉ CRYPTOGRAPHIQUE

(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

(43) Date of publication of application:
09.09.2020 Bulletin 2020/37

(60) Divisional application:
22187037.1 / 4099613

(73) Proprietor: Visa International Service Association
Foster City, CA 94404 (US)

(72) Inventor:
  • WANG, Quan
    Foster City, California 94404 (US)

(74) Representative: EIP 
Fairfax House 15 Fulwood Place
London WC1V 6HU
London WC1V 6HU (GB)


(56) References cited: : 
EP-A1- 2 363 977
WO-A2-2011/033259
US-A1- 2009 239 500
US-A1- 2012 008 783
US-A1- 2017 257 358
 WO-A1-2017/112019
US-A1- 2009 147 958
US-A1- 2009 327 731
US-A1- 2017 220 815
   
  • RENE MAYRHOFER: "The Candidate Key Protocol for Generating Secret Shared Keys from Similar Sensor Data Streams" In: "ESAS '07 PROCEEDINGS OF THE 4TH EUROPEAN CONFERENCE ON SECURITY AND PRIVACY IN AD-HOC AND SENSOR NETWORKS", 3 July 2007 (2007-07-03), Cambridge, UK, XP019063210, ISBN: 978-3-540-73274-7 * . See page 2, line 12 - page 14, line 10; and figures 1-2. *
   
Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).