(19)
(11) EP 1 616 406 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:
21.12.2016 Bulletin 2016/51

(45) Mention of the grant of the patent:
05.10.2016 Bulletin 2016/40

(21) Application number: 04718163.1

(22) Date of filing: 05.03.2004
(51) International Patent Classification (IPC): 
H04L 9/32(2006.01)
(86) International application number:
PCT/US2004/007040
(87) International publication number:
WO 2004/095773 (04.11.2004 Gazette 2004/45)

(54)

ESTABLISHING TRUST WITHOUT REVEALING IDENTITY

VERTRAUENSCHAFFUNG OHNE DIE IDENTITÄT OFFEN ZU LEGEN

ETABLIR LA CONFIANCE SANS DEVOILER L'IDENTITE

(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

(30) Priority: 11.04.2003 US 412366

(43) Date of publication of application:
18.01.2006 Bulletin 2006/03

(73) Proprietor: Intel Corporation
Santa Clara, CA 95054 (US)

(72) Inventor:
  • BRICKELL, Ernie
    Portland, OR 97210 (US)

(74) Representative: Beresford, Keith Denis Lewis 
Beresford Crump LLP 16 High Holborn
London WC1V 6BX
London WC1V 6BX (GB)


(56) References cited: : 
FR-A- 2 620 248
FR-A- 2 714 780
FR-A- 2 752 122
FR-A- 2 830 147
 FR-A- 2 700 430
FR-A- 2 742 618
FR-A- 2 763 452
US-B1- 6 473 508
   
  • GILLES ZEMOR: "Cours de cryptography" November 2000 (2000-11), CASSINI , PARIS , XP002313885 ISBN: 2-844225-020-6 page 165 - page 173
  • M. PRABHAKARAN, A. SAHAI: "Concurrent Zero Knowledge Proofs with Logarithmic Round-Complexity"[Online] 6 May 2002 (2002-05-06), pages A,1-19, XP002313883 Retrieved from the Internet: URL:http://eprint.iacr.org/2002/055.pdf> [retrieved on 2004-09-22]
  • D. MICCIANCIO, E. PETRANK: "Efficient and Concurrent Zero-Knowledge from any public coin HVZK protocol"[Online] 8 July 2002 (2002-07-08), pages 1-20, XP002313884 Retrieved from the Internet: URL:http://eprint.iacr.org/2002/090.pdf> [retrieved on 2004-09-22]
  • ERNIE BRICKELL ET AL: "Direct Anonymous Attestation", INTERNATIONAL ASSOCIATION FOR CRYPTOLOGIC RESEARCH,, vol. 20040821:115324, 20 August 2004 (2004-08-20), pages 1-28, XP061000928, [retrieved on 2004-08-20]
  • CAMENISCH J ET AL: "Dynamic accumulators and application to efficient revocation of anonymous credentials", SECURITY IN COMMUNICATION NETWORKS : THIRD INTERNATIONAL CONFERENCE ; REVISED PAPERS / SCN 2002, AMALFI, ITALY, SEPTEMBER 11 - 13, 2002; [LECTURE NOTES IN COMPUTER SCIENCE , ISSN 0302-9743], SPRINGER VERLAG, DE, vol. 2442, 1 February 2002 (2002-02-01), pages 61-76, XP002391625, DOI: 10.1007/3-540-45708-9_5 ISBN: 978-3-540-24128-7
  • "TRUSTED COMPUTING PLATFORM ALLIANCE (TCPA) MAIN SPECIFICATION VERSION 1.1B", INTERNET CITATION, 22 February 2002 (2002-02-22), XP002304627, Retrieved from the Internet: URL:http://www.trustedcomputinggroup.org/d ownloads/Maijn_TCG_Architecture_v1_1b.zip [retrieved on 2004-11-08]
  • LANGLOIS ADELINE ET AL: "Lattice-Based Group Signature Scheme with Verifier-Local Revocation", 26 March 2014 (2014-03-26), ADVANCES IN COMMUNICATION NETWORKING : 20TH EUNICE/IFIP EG 6.2, 6.6 INTERNATIONAL WORKSHOP, RENNES, FRANCE, SEPTEMBER 1-5, 2014, REVISED SELECTED PAPERS; [LECTURE NOTES IN COMPUTER SCIENCE , ISSN 1611-3349], SPRINGER VERLAG, DE, PAGE(S) 345 - 361, XP047183556, ISSN: 0302-9743
   
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).