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Extract from the Register of European Patents

EP About this file: EP4152685

EP4152685 - SIDE-CHANNEL ROBUST INCOMPLETE NUMBER THEORETIC TRANSFORM FOR CRYSTAL KYBER [Right-click to bookmark this link]
StatusRequest for examination was made
Status updated on  15.09.2023
Database last updated on 21.03.2025
FormerThe application has been published
Status updated on  17.02.2023
Most recent event   Tooltip29.07.2024New entry: Renewal fee paid 
Applicant(s)For all designated states
INTEL Corporation
2200 Mission College Blvd.
Santa Clara, CA 95054 / US
[2023/12]
Inventor(s)01 / VARNA, Avinash L.
Chandler, 85224 / US
02 / SASTRY, Manoj
Portland, 97229 / US
03 / GHOSH, Santosh
Hillsboro, 97124 / US
04 / DINU, Dumitru-Daniel
Chandler, 85226 / US
05 / BASSO, Andrea
London, W6 7QQ / GB
 [2023/12]
Representative(s)Maiwald GmbH
Engineering
Elisenhof
Elisenstrasse 3
80335 München / DE
[2023/12]
Application number, filing date22188583.303.08.2022
[2023/12]
Priority number, dateUS20211748041321.09.2021         Original published format: US202117480413
[2023/12]
Filing languageEN
Procedural languageEN
PublicationType: A1 Application with search report 
No.:EP4152685
Date:22.03.2023
Language:EN
[2023/12]
Search report(s)(Supplementary) European search report - dispatched on:EP10.02.2023
ClassificationIPC:H04L9/30, H04L9/00, H04L9/08, G06F17/14
[2023/12]
CPC:
H04L9/003 (EP); H04L9/002 (US); G06F17/144 (EP);
G06F7/72 (US); H04L9/0825 (EP); H04L9/3093 (EP);
G06F2207/7223 (US); H04L2209/08 (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 [2023/42]
Former [2023/12]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 
Extension statesBANot yet paid
MENot yet paid
Validation statesKHNot yet paid
MANot yet paid
MDNot yet paid
TNNot yet paid
TitleGerman:SEITENKANALROBUSTE UNVOLLSTÄNDIGE ZAHLENTHEORETISCH TRANSFORMATION FÜR CRYSTAL-KYBER[2023/12]
English:SIDE-CHANNEL ROBUST INCOMPLETE NUMBER THEORETIC TRANSFORM FOR CRYSTAL KYBER[2023/12]
French:TRANSFORMÉE DE LA THÉORIE DES NOMBRES INCOMPLETE ROBUSTE CONTRE LES ATTAQUES PAR LE CANAUX CACHÉS POUR CRYSTAL KYBER[2023/12]
Examination procedure12.09.2023Amendment by applicant (claims and/or description)
12.09.2023Examination requested  [2023/42]
12.09.2023Date on which the examining division has become responsible
Fees paidRenewal fee
29.07.2024Renewal fee patent year 03
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Documents cited:Search[XI]  - RAVI PRASANNA ET AL, On Configurable SCA Countermeasures Against Single Trace Attacks for the NTT, 16TH EUROPEAN CONFERENCE - COMPUTER VISION - ECCV 2020, PAGE(S) 123 - 146, (20201222), XP047574487 [X] 1,8 * subtitle, application to Kyber sections 2.1 and 2.3;; figure 1 * [I] 2-7,9-14

DOI:   http://dx.doi.org/10.1007/978-3-030-66626-2_7
 [T]  - Avanzi Roberto ET AL, "CRYSTALS-Kyber Algorithm Specications And Supporting Documentation", (20190401), pages 1 - 37, URL: https://pq-crystals.org/kyber/data/kyber-specification-round2.pdf, (20230203), XP093020494 [T] * the whole document *
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.