Patent SG-11201808734P-A (SG)
Title: Method and system for detecting eavesdropping during data transmission
Inventor: FU YINGFANG
IPC: G06F11/00
Filed: 2017-04-27
Abstract: O\ N O N C (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 16 November 2017 (16.11.2017) WIPO I PCT omit VIII Hot 0 omiolu ioo H IIII iflo oimIE (10) International Publication Number WO 2017/196545 Al (51) International Patent Classification: GOOF 11/00 (2006.01) (21) International Application Number: PCT/US2017/029818 (22) International Filing Date: 27 April 2017 (27.04.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 201610311976.X 11 May 2016 (11.05.2016) CN 15/497,678 26 April 2017 (26.04.2017) US (71) Applicant: ALIBABA GROUP HOLDING LIMITED [ /US]; Fourth Floor, One Capital Place, P.O. Box 847, George Town, Grand Cayman (KY). (72) Inventors: FU, Yingfang; Alibaba Group Legal Depart- ment, 5/F, Building 3, No. 969 West Wen Yi Road, Yu Hang District, Hangzhou, Zhejiang 311121 (CN). LIU, Shuanlin; Alibaba Group Legal Department, 5/F, Building 3, No. 969 West Wen Yi Road, Yu Hang District, Hangzhou, Zhejiang 311121 (CN). (74) Agent: YAO, Shun; 2800 Fifth Street, Suite 110, Davis, California 95618 (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, 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, (54) Title: METHOD AND SYSTEM FOR DETECTING EAVESDROPPING DURING DATA TRANSMISSION CLIENT 102 SERVER 104 106 SEND HTTPS REQUEST 108 SEND DIGITAL CERTIFICATE VERIFY DIGITAL CERTIFICATE 110 GENERATE AND ENCRYPT A RANDOM KEY 112 114 SEND ENCRYPTED RANDOM KEY OBTAIN RANDOM KEY USING PRIVATE KEY 116 COMMUNICATE USING THE RANDOM KEY FIG. 1 (57) : One embodiment provide a system and method for detecting eavesdropping while establishing secure communication between a local node and a remote node. During operation, the local node generates a random key and a regular optical signal based on the random key. The local node also generates a quantum optical signal based on a control sequence and a set of quantum state bases, and multiplexes the regular optical signal and the quantum optical signal to produce a hybrid optical signal. The local node transmits the hybrid optical signal to the remote node, sends information associated with the control sequence and information associated with the set of quantum state bases to the remote node, and receives an eavesdropping-detection result from the remote node based on measurement of the quantum optical signal, the information associated with the control sequence, and the information associated with the set of quantum state bases. [Continued on next page] WO 2017/196545 Al MIDEDIMOMOIDEIROIDEMOMOHEIHINIMI1101111111111111111111 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))