Patent SG-11201906532P-A (SG)
Title: Key establishment and data sending method and apparatus
Inventor: LI YI
IPC: H04L9/08
Filed: 2018-02-23
Abstract: Thedata exchange platform sends the first key to the second terminal .101 - 102 103 FIG. 1 A data exchange platform writes a data exchange agreement achieved between a first user and a second user into a block chain and stores the agreement The data exchange platform receives a first key sent by a first terminal and used for decrypting encrypted first data 00 O C (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 30 August 2018 (30.08.2018) W I P0 I P C T ill 1111u°11111VIIIVIIIVIIIolo on! Immo oimIE (10) International Publication Number WO 2018/156924 Al (51) International Patent Classification: GOOF 21/64 (2013.01) H04L 29/06 (2006.01) HO4L 9/08 (2006.01) H04W 12/04 (2009.01) HO4L 9/32 (2006.01) (21) International Application Number: PCT/US2018/019464 (22) International Filing Date: 23 February 2018 (23.02.2018) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 201710102824.3 24 February 2017 (24.02.2017) CN (71) Applicant: ALIBABA GROUP HOLDING LIMITED [ /US]; Fourth Floor, One Capital Place, P.O. Box 847, George Town, Grand Cayman (KY). (72) Inventor: LI, Yi; C/o Ants Patent Team, 17F Building B, Huanglong Times Plaza, No. 18 Wantang Road, Hangzhou, 310099 (CN). (74) Agent: STALFORD, Terry, J.; Fish & Richardson P.C., P.O. Box 1022, Minneapolis, MN 55440-1022 (US). (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, 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: — with international search report (Art. 21(3)) (54) Title: KEY ESTABLISHMENT AND DATA SENDING METHOD AND APPARATUS FIGURES (57) : The present application discloses a data sending method for solving the problem of low data security in an existing data exchange process. The method includes: writing, by a data transaction platform, a data transaction agreement achieved between a first user and a second user into a block chain and storing the agreement; receiving, by a data exchange platform, a first key sent by a first terminal and used for decrypting encrypted first data, the first terminal being a terminal corresponding to the first user; sending, by the first terminal, the encrypted first data to a second terminal, the second terminal being a terminal corresponding to the second user; sending, by the data exchange platform, the first key to the second terminal; and decrypting, by the second terminal, the received encrypted first data based on the first key to obtain the first data. The present application further discloses a data sending apparatus.