Patent SG-11201906827X-A (SG)
Title: Shared secret-based blockchain storage
Inventor: YING PENGFEI
Filed: 2018-12-19
Abstract: arequest to store a data ,tern in a blockchain nemotk Dmding the data item into a plurally e parta ,o,s Assigning Path data pan+ton In a Vterent male in the No Storing information essoaated .th each data partton in a blockchain r - r - 406 J 40 410 Rereivirg a request to retOeve the stored data item W O 20 19/07 2298 A2 Sending a response b the request to retrieve the stored data item, rer 4\" the response in:ludas tha reconstructed data item j 414 Reconstructing ?he stored data ter from the stored data partitions Rettieving each stored data prt . ton from the assigned nodes FIG. 4 (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 18 April 2019 (18.04.2019) WIPO I PCT 1111111111111101111111111111111011111010011111111111011101111111111011111011110111111 (10) International Publication Number WO 2019/072298 A2 (51) International Patent Classification: Not classified (21) International Application Number: PCT/CN2018/122145 (22) International Filing Date: 19 December 2018 (19.12.2018) (25) Filing Language: English (26) Publication Language: English (71) Applicant: ALIBABA GROUP HOLDING LIMITED [—/CN]; Fourth Floor, One Capital Place, P.O. Box 847, George Town, Grand Cayman (KY). (72) Inventors: YING, Pengfei; Alibaba Group Legal Depart- ment 5/F, Building 3, No. 969 West Wen Yi Road, Yuhang District, Hangzhou, Zhejiang 311121 (CN). LIU, Zheng; Alibaba Group Legal Department 5/F, Building 3, No. 969 West Wen Yi Road, Yuhang District, Hangzhou, Zhejiang 311121 (CN). (74) Agent: BEIJING BESTIPR INTELLECTUAL PROP- ERTY LAW CORPORATION; Room 409, Tower B, Ka Wah Building, No. 9 Shangdi 3rd Street, Haidian District, Beijing 100085 (CN). (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, 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, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, 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, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (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, FI, FR, GB, GR, HR, HU, 1E, 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). (54) Title: SHARED SECRET-BASED BLOCKCHAIN STORAGE (57) : Implementations of the present application include receiving a request to store a data item in the blockchain network, and in response: divid- ing the data item into a plurality of data partitions; assigning each data partition to a different node in the blockchain network, wherein each node stores the as- signed data partition in a privately-maintained distributed hash table; and stor- ing information associated with each data partition in a blockchain maintained by the blockchain network, the information including a storage location of each data partition [Continued on next page] WO 2019/072298 A2 IIIN I 0111110111010111111110n1001110111111 VIII OH 1111111HOEMIE Published: upon request of the applicant, before the expiration of the time limit referred to in Article 21(2)(a) without international search report and to be republished upon receipt of that report (Rule 48.2(g))