Patent SG-11201903438T-A (SG)
Title: System and method for information protection
Inventor: MA BAOLI
Filed: 2018-11-27
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property M Th 0 111111 11 111 11111 0 11110 1 0 111 11111 11 11 0 110111 11 111 110 1111011 0 11 1111 Organization --- -- International Bureau (10) International Publication Number (43) International Publication Date ....0\"-\") WO 2019/072278 A2 18 April 2019 (18.04.2019) WIP0 I PCT (51) (21) (22) (25) Filing Language: (26) (71) (72) International Patent Classification: Not classified International Application Number: International Filing Date: Publication Language: Applicant: ALIBABA GROUP HOLDING LIMITED [—/CN]; Fourth Floor, One Capital Place, P.O. BOX 847, George Town, Grand Cayman (KY). Inventors: MA, Baoli; Alibaba F, Building 3, No.969 West Wen Yi Road, Yu Hang District, 27 November 2018 (27.11.2018) PCT/CN2018/117560 English English Group Legal Department 5/ ZHANG, Wenbin; Al- West Wen Yi Road, Yu Hang District, Hangzhou, Zhejiang 311121 (CN). (74) Agent: BEIJING BESTIPR INTELLECTUAL PROP- ERTY LAW CORPORATION; Room 409, Tower B, Ka Wall 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. Hangzhou, Zhejiang 311121 (CN) ibaba Group Legal Department 5/F, Building 3, No.969 Title: SYSTEM AND METHOD : A computer-implemented to obtain a transaction commitment a combination of the transaction blinding factor r_t and the transaction amount t with of the transaction, wherein: amount t; and transmitting the transaction commitment value T and the encrypted combination to a recipient node associated the recipient for the recipient node to verify the transaction. (57) 6 -- encrypting ----• recipient , 1 transaction FOR INFORMATION PROTECTION 300 /4 t of a transaction with a commitment a transaction blinding factor r_t; = (54) 3.411 committing a transaction amount t of a transaction with a commitment scheme to obtain a transaction commitment value T, the commitment scheme comprising at least a transaction blinding factor r_t 302 . encrypting a combination of the transaction blinding factor r_t and the transaction amount t with a second public key PK_2_B of a recipient of the transaction, wherein: the recipient is further associated with a first public key PK_1_B as an address for receiving the transaction amount t transmitting the transaction commitment value T and the encrypted combination to a recipient node associated with the recipient for the recipient node to verify the transaction FIG. 3A method comprises: committing a transaction amount value T, the commitment scheme comprising at least the recipient is further associated with a first public key PK_l_B CI Gie eq IN N scheme GT 0 with N a second public key PK_2_B of a as an address for receiving the C [Continued on next page] WO 2019/072278 A2 111111 I 01111I 01110101111111101H0 1 001 II II III II III 11111 II III 110 INIEMIE (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: — 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))