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Extract from the Register of European Patents

EP About this file: EP4173223

EP4173223 - VERIFICATION KEY GENERATION IN DISTRIBUTED NETWORKS [Right-click to bookmark this link]
StatusRequest for examination was made
Status updated on  31.03.2023
Database last updated on 15.06.2024
FormerThe international publication has been made
Status updated on  07.01.2022
Formerunknown
Status updated on  22.01.2021
Most recent event   Tooltip10.10.2023New entry: Renewal fee paid 
Applicant(s)For all designated states
Dfinity Stiftung
Genferstrasse 11
8002 Zürich / CH
[2023/18]
Inventor(s)01 / CAMENISCH, Jan
8002 Zürich / CH
02 / DRIJVERS, Manu
8002 Zürich / CH
03 / GRANSTRÖM, Johan
8002 Zürich / CH
04 / KASHITSYN, Roman
8002 Zürich / CH
05 / NEVEN, Gregory
8002 Zürich / CH
06 / PIGNOLET, Yvonne-Anne
8002 Zürich / CH
07 / WILLIAMS, Dominic
8002 Zürich / CH
 [2023/18]
Representative(s)E. Blum & Co. AG
Franklinturm
Hofwiesenstrasse 349
8050 Zürich / CH
[N/P]
Former [2023/18]E. Blum & Co. AG
Patent- und Markenanwälte VSP
Vorderberg 11
8044 Zürich / CH
Application number, filing date20839005.421.12.2020
[2023/18]
WO2020EP87410
Priority number, dateUS202063046371P30.06.2020         Original published format: US 202063046371 P
[2023/18]
Filing languageEN
Procedural languageEN
PublicationType: A1 Application with search report
No.:WO2022002428
Date:06.01.2022
Language:EN
[2022/01]
Type: A1 Application with search report 
No.:EP4173223
Date:03.05.2023
Language:EN
The application published by WIPO in one of the EPO official languages on 06.01.2022 takes the place of the publication of the European patent application.
[2023/18]
Search report(s)International search report - published on:EP06.01.2022
ClassificationIPC:H04L9/08, G06F21/62, G06F21/64, H04L9/32
[2023/18]
CPC:
H04L9/0819 (EP); H04L9/0861 (EP,US); G06F21/64 (EP);
H04L63/065 (EP); H04L9/085 (EP,US); H04L9/3247 (EP,US);
H04L9/3255 (EP); H04L9/3263 (EP); H04L9/50 (EP) (-)
Designated contracting statesAL,   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 [2023/18]
TitleGerman:ERZEUGUNG EINES VERIFIZIERUNGSSCHLÜSSELS IN VERTEILTEN NETZWERKEN[2023/18]
English:VERIFICATION KEY GENERATION IN DISTRIBUTED NETWORKS[2023/18]
French:GÉNÉRATION DE CLÉS DE VÉRIFICATION DANS DES RÉSEAUX DISTRIBUÉS[2023/18]
Entry into regional phase24.01.2023National basic fee paid 
24.01.2023Designation fee(s) paid 
24.01.2023Examination fee paid 
Examination procedure24.01.2023Examination requested  [2023/18]
24.01.2023Date on which the examining division has become responsible
17.08.2023Amendment by applicant (claims and/or description)
Fees paidRenewal fee
24.01.2023Renewal fee patent year 03
10.10.2023Renewal fee patent year 04
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Cited inInternational search[A]WO2020061593  (YAKIRA DAVID [IL], et al) [A] 1-22* paragraph [0010] - paragraph [0105] *;
 [XY]  - TIMO HANKE ET AL, "DFINITY Technology Overview Series, Consensus System", ARXIV.ORG, CORNELL UNIVERSITY LIBRARY, 201 OLIN LIBRARY CORNELL UNIVERSITY ITHACA, NY 14853, (20180511), XP080877367 [X] 1-13,16-22 * paragraph [0004] - paragraph [0007] * [Y] 14,15
 [Y]  - ADAM GAGOL ET AL, "Aleph: Efficient Atomic Broadcast in Asynchronous Networks with Byzantine Nodes", ARXIV.ORG, CORNELL UNIVERSITY LIBRARY, 201 OLIN LIBRARY CORNELL UNIVERSITY ITHACA, NY 14853, (20190814), XP081462369 [Y] 14,15 * paragraph [0004] *
 [A]  - TOMESCU ALIN ET AL, "Towards Scalable Threshold Cryptosystems", 2020 IEEE SYMPOSIUM ON SECURITY AND PRIVACY (SP), IEEE, (20200518), doi:10.1109/SP40000.2020.00059, pages 877 - 893, XP033800596 [A] 1-22 * paragraph [000I] - paragraph [00II] *

DOI:   http://dx.doi.org/10.1109/SP40000.2020.00059
 [A]  - ANDREI LIHU ET AL, "A Proof of Useful Work for Artificial Intelligence on the Blockchain", ARXIV.ORG, CORNELL UNIVERSITY LIBRARY, 201 OLIN LIBRARY CORNELL UNIVERSITY ITHACA, NY 14853, (20200125), XP081585847 [A] 1-22 * paragraph [0003] - paragraph [0004] *
 [A]  - PHILIPP SCHINDLER ET AL, "ETHDKG: Distributed Key Generation with Ethereum Smart Contracts", vol. 20190829:111914, (20190829), pages 1 - 14, IACR, INTERNATIONAL ASSOCIATION FOR CRYPTOLOGIC RESEARCH, URL: http://eprint.iacr.org/2019/985.pdf, (20190829), XP061033311 [A] 1-22 * paragraph [0003] - paragraph [0005] *
by applicant   - 28th Annual Symposium on Foundations of Computer Science, IEEE Computer Society Press, (19871012), pages 427 - 437
    - "A threshold cryptosystem without a trusted party (extended abstract) (rump session", TORBEN P. PEDERSEN, Advances in Cryptology - EUROCRYPT'91, Springer, (19910408), vol. 547, pages 522 - 526
    - "Secure distributed key generation for discrete-log based cryptosystems", ROSARIO GENNAROSTANISLAW JARECKIHUGO KRAWCZYKTAL RABIN, Advances in Cryptology - EUROCRYPT'99, Springer, (19990502), vol. 1592, pages 295 - 310
    - "Proactive Secret Sharing Or: How to Cope With Perpetual Leakage", HERZBERG, AMIRJARECKI, STANISLAWHUGO, KRAWCZYKYUNG, MOTI, CRYPTO '95: Proceedings of the 15th Annual International Cryptology Conference on Advances in Cryptology. London, UK, Springer-Verlag, (19950000), pages 339 - 352
    - RAN CANETTI, NIKOLAOS MAKRIYANNIS, UDI PELED, "UC Non-Interactive, Proactive, Threshold ECDSA", IACR Cryptol, (20200000), vol. 2020, page 492
    - DAVID A. SCHULTZBARBARA LISKOVMOSES D. LISKOV, "MPSS: Mobile Proactive Secret Sharing", ACM Trans. Inf. Syst. Secur., (20100000), vol. 13, no. 4, pages 1 - 32
The EPO accepts no responsibility for the accuracy of data originating from other authorities; in particular, it does not guarantee that it is complete, up to date or fit for specific purposes.