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Extract from the Register of European Patents

EP About this file: EP3949246

EP3949246 - METHOD AND APPARATUS FOR IMPLEMENTING A WHITE-BOX CIPHER [Right-click to bookmark this link]
StatusExamination is in progress
Status updated on  08.12.2023
Database last updated on 15.07.2024
FormerRequest for examination was made
Status updated on  07.01.2022
FormerThe international publication has been made
Status updated on  09.10.2020
Formerunknown
Status updated on  18.04.2020
Most recent event   Tooltip03.07.2024New entry: Application deemed to be withdrawn: despatch of communication + time limit 
Applicant(s)For all designated states
Irdeto B.V.
Taurus Avenue 105
2132 LS Hoofddorp / NL
[2022/06]
Inventor(s)01 / LIN, Tingting
105 Taurus Avenue
2132 LS Hoofddorp / NL
02 / LOU, Dafu
105 Taurus Avenue
2132 LS Hoofddorp / NL
03 / VON WILLICH, Manfred
105 Taurus Avenue
2132 LS Hoofddorp / NL
[N/P]
Former [2022/06]01 / LIN, Tingting
2132 LS Hoofddorp / NL
02 / LOU, Dafu
2132 LS Hoofddorp / NL
03 / VON WILLICH, Manfred
2132 LS Hoofddorp / NL
Representative(s)Boult Wade Tennant LLP
Salisbury Square House
8 Salisbury Square
London EC4Y 8AP / GB
[2022/06]
Application number, filing date20717280.023.03.2020
[2022/06]
WO2020IB52693
Priority number, dateUS20191636892229.03.2019         Original published format: US201916368922
[2022/06]
Filing languageEN
Procedural languageEN
PublicationType: A1 Application with search report
No.:WO2020201899
Date:08.10.2020
Language:EN
[2020/41]
Type: A1 Application with search report 
No.:EP3949246
Date:09.02.2022
Language:EN
The application published by WIPO in one of the EPO official languages on 08.10.2020 takes the place of the publication of the European patent application.
[2022/06]
Search report(s)International search report - published on:EP08.10.2020
ClassificationIPC:H04L9/06, H04L9/00
[2022/06]
CPC:
H04L9/0631 (EP,US); G06F16/9017 (US); G06F16/9027 (US);
H04L63/1441 (US); H04L9/003 (EP); H04L9/0861 (US);
H04L2209/16 (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 [2022/06]
TitleGerman:VERFAHREN UND VORRICHTUNG ZUR IMPLEMENTIERUNG EINES WHITE-BOX-CODIERSCHLÜSSELS[2022/06]
English:METHOD AND APPARATUS FOR IMPLEMENTING A WHITE-BOX CIPHER[2022/06]
French:PROCÉDÉ ET APPAREIL DE MISE EN OEUVRE D'UN CHIFFREMENT EN BOÎTE BLANCHE[2022/06]
Entry into regional phase15.09.2021National basic fee paid 
15.09.2021Designation fee(s) paid 
15.09.2021Examination fee paid 
Examination procedure15.09.2021Examination requested  [2022/06]
15.09.2021Date on which the examining division has become responsible
09.05.2022Amendment by applicant (claims and/or description)
11.12.2023Despatch of a communication from the examining division (Time limit: M06)
02.07.2024Despatch of communication that the application is deemed to be withdrawn, reason: reply to the communication from the examining division not received in time
Fees paidRenewal fee
17.03.2022Renewal fee patent year 03
17.03.2023Renewal fee patent year 04
15.03.2024Renewal fee patent year 05
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Responsibility for the accuracy, completeness or quality of the data displayed under the link provided lies entirely with the Unified Patent Court.
Cited inInternational search[A]  - TINGTING LIN ET AL, "Security Evaluation and Improvement of a White-Box SMS4 Implementation Based on Affine Equivalence Algorithm", COMPUTER JOURNAL., GB, (20180718), vol. 61, no. 12, doi:10.1093/comjnl/bxy068, ISSN 0010-4620, pages 1783 - 1790, XP055694746 [A] 1-18 * sections 2, 3, 4 *

DOI:   http://dx.doi.org/10.1093/comjnl/bxy068
 [A]  - NIKOVA SVETLA ET AL, Threshold Implementations Against Side-Channel Attacks and Glitches, ROBOCUP 2008: ROBOCUP 2008: ROBOT SOCCER WORLD CUP XII; [LECTURE NOTES IN COMPUTER SCIENCE; LECT.NOTES COMPUTER], SPRINGER INTERNATIONAL PUBLISHING, CHAM, PAGE(S) 529 - 545, (20061204), ISBN 978-3-319-10403-4, XP047518188 [A] 1-18 * sections 3, 4, 6 *

DOI:   http://dx.doi.org/10.1007/11935308_38
 [A]  - RUDRA A ET AL, "EFFICIENT RIJNDAEL ENCRYPTION IMPLEMENTATION WITH COMPOSITE FIELD ARITHMETIC", CRYPTOGRAPHIC HARDWARE AND EMBEDDED SYSTEMS. 3RD INTERNATIONAL WORKSHOP, CHES 2001, PARIS, FRANCCE, MAY 14 - 16, 2001 PROCEEDINGS; [LECTURE NOTES IN COMPUTER SCIENCE], BERLIN : SPRINGER, DE, (20010514), vol. 2162, doi:10.1007/3-540-44709-1_16, ISBN 978-3-540-42521-2, pages 171 - 184, XP001176598 [A] 1-18 * sections 2, 4, 5, 6 *

DOI:   http://dx.doi.org/10.1007/3-540-44709-1_16
by applicant   - "White-box cryptography and an AES implementation", CHOW, S.EISEN, P.JOHNSON, H.VAN OORSCHOT, P.C., International Workshop on Selected Areas in Cryptography, Springer, (20020800), pages 250 - 270
    - XIAO, Y.LAI, X., White-Box Cryptography and a White-Box Implementation of the SMS4 Algorithm, Shanghai Jiaotong University, (20090000), pages 24 - 34
    - SHI, Y.WEI, W.HE, Z., "Lightweight White-box Symmetric Encryption Algorithm Against Node Capture for WSNs", Sensors, (20150000), vol. 15, no. 5, pages 11928 - 11952
    - LIN, TINGTING et al., "Security Evaluation and Improvement of a White-Box SMS4 Implementation Based on Affine Equivalence Algorithm", The Computer Journal, (20180000), vol. 61.12, pages 1783 - 1790
    - "Efficient Rijndael Encryption Implementation with Composite Field Arithmetic", RUDRA, A.DUBEY, P.K.JUTLA, C.S.KUMAR, V.RAO, J.R.ROHATGI, P., International Work-shop on Cryptographic Hardware and Embedded Systems, Springer, (20010500), pages 171 - 184
    - "Composite field GF (((2 2) 2) 2) AES S-Box with Direct Computation in GF (2 4) Inversion, Information Technology in Asia (CITA 11", WONG, M.M.WONG, M.L.D.HIJZIN, I.NANDI, A.K., 7th International Conference on, IEEE., (20110000), pages 1 - 6
    - "Threshold implementations of all 3x 3 and 4x 4 S-Boxes", BILGIN BNIKOVA SNIKOV VRIJMEN VSTUTZ G, International Workshop on Cryptographic Hardware and Embedded Systems, Springer, (20120900), vol. 9, pages 441 - 455
    - "Threshold Implementations Against Side-channel Attacks and Glitches", NIKOVA, S.RECHBERGER, C.RIJMEN, V., International conference on information and communications security, Springer, (20061200), pages 529 - 545
    - "Secure Hardware Implementation of Non-linear Functions in the Presence of Glitches", NIKOVA, S.RIJMEN, V.SCHLÄFFER, M, International Conference on Information Security and Cryptology, Springer, (20081200), pages 218 - 234
    - "A Toolbox for Cryptanalysis: Linear and Affine Equivalence Algorithms", BIRYUKOV, A.DE CANNIERE, C.BRAEKEN, A. et al., Advances in Cryptology-EUROCRYPT 2003, Springer, (20030500), pages 33 - 50
    - SHI, Y.WEI, W.HE, Z., "lightweight white-box symmetric encryption algorithm against node capture for WSNs", Sen-sors, (20150000), vol. 15, no. 5, pages 11928 - 11952
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.