Patent SG-11201909013R-A (SG)
Title: Authentication based on a recoverd public key
Inventor: ZHOU ZHIYUAN
Filed: 2019-03-15
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 31 May 2019 (31.05.2019) WIPO I PCT 111111111111110111111111111111101111101011111111111110111111111111111011111011110111111 (10) International Publication Number WO 2019/101240 A2 The second nude determines an x-axis Value and morello one pads %elms of the NW point used 1 -405 IN the first node in generating The eigeture (51) International Patent Classification: Not classified (21) International Application Number: PCT/CN2019/078382 (22) International Filing Date: 15 March 2019 (15.03.2019) (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) Inventor: ZHOU, Zhiyuan; Alibaba Group Legal Depart- ment 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). 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)) (54) Title: AUTHENTICATION BASED ON A RECOVERD PUBLIC KEY (57) : This specification relates to the field of computer 400 technologies, and in particular, to a authentication method, and a corresponding apparatus and system. One of the methods includes receiving, by a first node, a signed message from a second node, wherein the signed message includes a digital signature generated by the second node; in response to receiving the signed message, recovering, by the first node, one or more public keys from the digi- tal signature; in response to recovering the one or more public keys, determining, by the first node, that one of the one or more public keys matches a verified public key; and in response to determining that one of the one or more public keys matches the verified public key, determining that the signed message is authentic. W O 20 19/ 10 1240 A2 The second nude selects a y-axis vette from the more than one determined yards values based on the Wunder information inetted in the sigekre 410 The second node authenticate the frst node by combating the detemited gislic key with verified public kegs of the first node 415 FIG.4