Patent AU-2018347197-B2 (AU)
Title: System and method for information protection
Inventor: CUI JIAHUI
IPC: G06F21/10
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 2019/072279 A2 18 April 2019 (18.04.2019) W IPO I PCT (51) International Patent Classification: Hang District, Hangzhou, Zhejiang 311121 (CN). ZHANG, Not classified Wenbin; Alibaba Group Legal Department 5/F, Building 3, (21) International Application Number: No.969 West Wen Yi Road, Yu Hang District, Hangzhou, PCT/CN2018/p7571 Zhejiang 311121 (CN). MA, Huanyu; Alibaba Group Le galDepartment 5/F, Building 3, No.969 WestWenYiRoad, (22) International Filing Date: Yu Hang District, Hangzhou, Zhejiang 311121 (CN). 27 November 2018 (27.11.2018) (74) Agent: BEIJING BESTIPR INTELLECTUAL PROP (25) Filing Language: English ERTY LAW CORPORATION; Room 409, Tower B, Ka Wal Building, No. 9 Shangdi 3rd Street, Haidian District, (26)PublicationLanguage: English Beijing 100085 (CN). (71) Applicant: ALIBABA GROUP HOLDING LIMITED (81) Designated States (unless otherwise indicated, for every [-/CN]; Fourth Floor, One Capital Place, P.O. BOX 847, kind national protection available): AE, AG, AL, AM, GeorgeTown,GrandCayman(KY). AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, (72) Inventors: CUI, Jiahui; Alibaba Group Legal Department CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, 5/F, Building 3, No.969 West Wen Yi Road, Yu Hang Dis- DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, trict, Hangzhou, Zhejiang 311121 (CN). MA, Baoli; Al- HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, ibaba Group Legal Department 5/F, Building 3, No.969 KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, West Wen Yi Road, Yu Hang District, Hangzhou, Zhe- MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, jiang 311121 (CN). LIU, Zheng; Alibaba Group Legal De- OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, partment 5/F, Building 3, No.969 West Wen Yi Road, Yu (54) Title: SYSTEM AND METHOD FOR INFORMATION PROTECTION 301: 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 public key PK_B of a recipient of the transaction 303: 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 e (57) Abstract: A computer-implemented method comprises: 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; encrypting a combination of the transaction blinding factor r_t and the transaction amount t with a public key PK_B of a recipient of the transaction; and 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. W O 2019/072279 A211111I|II|I||I|||I||||11|1|I|I|||||||D|I||||||||||||||||||||||||||||| 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, 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))