Patent AU-2018348322-C1 (AU)
Title: Asymmetric key management in consortium blockchain networks
Inventor: ZHANG YIXIANG
IPC: G06F21/60
Filed: 2018-11-27
Granted: 2020-06-25
Abstract: (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property (1) Organization11111111111111111111111I1111111111111i1111liiiii International Bureau (10) International Publication Number (43) International Publication Date W O 2019/072281 A2 18 April 2019 (18.04.2019) W IPO I PCT (51) International Patent Classification: No.969 West Wen Yi Road, Yu Hang District, Hangzhou, Not classified Zhejiang 311121 (CN). (21) International Application Number: (74) Agent: BEIJING BESTIPR INTELLECTUAL PROP PCT/CN2018/117576 ERTY LAW CORPORATION; Room 409, Tower B, Ka (22) International Filing Date: Wal Building, No. 9 Shangdi 3rd Street, Haidian District, 27 November 2018 (27.11.2018) Beijing 100085 (CN). (25) Filing Language: English (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, (26) Publication Language: English AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, (71) Applicant: ALIBABA GROUP HOLDING LIMITED CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, [-/CN]; Fourth Floor, One Capital Place, P.O. BOX 847, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, [e/CN];FourthaloonCapialmlacePHR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, GeorgeTown,GrandCayman(KY). KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, (72) Inventors: ZHANG, Yixiang; Alibaba Group Legal De- MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, partment 5/F, Building 3, No.969 West Wen Yi Road, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, Yu Hang District, Hangzhou, Zhejiang 311121 (CN). LI, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, Shubo; Alibaba Group Legal Department 5/F, Building 3, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (54) Title: ASYMMETRIC KEY MANAGEMENT IN CONSORTIUM BLOCKCHAIN NETWORKS 304 32 $2 Client BaaS - ParticipantI1 Server Upload identity certificate Configure key permissions Key request Check permissions, Return key pair generate service key Decrypt, retrieve key (57) Abstract: Implementations of the present specification provide for management of service keys for consortium blockchain net works within a blockchain-as-a-service (BaaS) platform. Implementations include actions of receiving a request for a service key from a participant in a consortium blockchain network provisioned within the BaaS platform, determining that the participant is authorized t- for the service key based on a service authorization table that records participant privileges within the consortium blockchain network, = providing a key package including an encrypted private key of the service key, and a public key of the service key, and sending the key package to the participant, the participant decrypting the private key of the service key using a public key associated with the participant. W O 20 19/07228 1 A 2|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, Fl, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). Published: - upon request of the applicant, before the expiration of the time limit referred to in Article 2](2)(a) - without international search report and to be republished upon receipt of that report (Rule 48.2(g))