Patent SG-11201804616V-A (SG)
Title: Secure provisioning, by a client device, cryptographic keys for exploiting services provided by an operator
Inventor: BIEBER YANN
IPC: H04L9/08
Filed: 2016-12-20
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property -' Organization International Bureau (43) International Publication Date ..... ....rel 29 June 2017(29.06.2017) WIPO I PCT II (10) 11111111111111111111111 WO International EOM 2017/108727 Publication 1111111111111111111111t111111111IIIIII Al Number (51) International Patent Classification: (81) Designated States (unless otherwise indicated, for every HO4L 9/08 (2006.01) H04N 7/167 (2011.01) kind of national protection available): AE, AG, AL, AM, HO4L 9/14 (2006.01) H04N 21/6334 (2011.01) AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, HO4L 9/16 (2006.01) BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, (21) International Application Number: HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, PCT/EP2016/081822 KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, (22) International Filing Date: MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, 20 December 2016 (20.12.2016) NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, (25) Filing Language: English TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, (26) Publication Language: English ZA, ZM, ZW. (30) Priority Data: (84) Designated States (unless otherwise indicated, for every 15202609.2 23 December 2015 (23.12.2015) EP kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, (71) Applicant: NAGRAVISION S.A. [CH/CH]; Route de TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, GenOve 22-24, 1033 Cheseaux-sur-Lausanne (CH). TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, (72) Inventors: BIEBER, Yann; Rue Couchirard 9, 1004 DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, L Lausanne (CH). NICOULIN, Andre; Chemin du SalOve 4, V, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, 1004 Lausanne (CH). SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). (74) Agent: LEMAN CONSULTING S.A. 284; Chemin de Published: Precossy 31, 1260 Nyon (CH). 21(3)) — with international search report (Art Title: SECURE PROVISIONING, BY A CLIENT DEVICE, CRYPTOGRAPHIC KEYS FOR EXPLOITING SERVICES (54) PROVIDED BY AN OPERATOR : A for by (57) method securely receiving a multimedia content a PVS OpLS DB Kp client device operated by one or more operator(s) involving a dedicated pro - visioning server of a security provider managing symmetric secrets used by the client devices and operators license servers. The provisioning server device provides to the client one or more generations of operator specific unique device secrets, which are then exploited by the various operators' li- cense servers to deliver licenses such that authorized client devices can con — REQ1 (uoDIC) sume protected multimedia contents. Pre-provisioning i(vpluoKDER Gen, [CKIKp) REQp (DEV-ID, Op) DEV DK [CKIKp —I. CK Il I C .4t Hu DIC \ N it-- GC APPS [CON-]CK C I'l IN I'l C ei Fig. 1 O