Patent AU-2019203848-B2 (AU)
Title: Methods and devices for protecting sensitive data of transaction activity based on smart contract in blockchain
Inventor: CHENG LONG
IPC: G06F21/64
Filed: 2019-03-01
Granted: 2020-12-24
Abstract: 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 2019/101228 A2 
31 May 2019 (31.05.2019) W IPO I PCT 
(51) International Patent Classification: (74) Agent: BEIJING BESTILPR INTELLECTUAL PROP
Not classified ERTY LAW CORPORATION; Room 409, Tower B, Ka 
(21) International Application Number: Wal Building, No. 9 Shangdi 3rd Street, Haidian District, 
PCT/CN2019/076656 Beijing 100085 (CN).  
(22) International Filing Date: (81) Designated States (unless otherwise indicated, for every 
0 1 March 2019 (01.03.2019) kind ofnational protection available): AE, AG, AL, AM, 
AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, 
(25) Filing Language: English 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, 
(26)PublicationLanguage: English HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, 
(71) Applicant: ALIBABA GROUP HOLDING LIMITED KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, 
[-/CN]; Fourth Floor, One Capital Place, P.O. BOX 847, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, 
George Town, Grand Cayman (KY). OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, 
SC, SD, SE, SG, SK, SL, SM, ST, SVSY, TH, TJ, TM, TN, 
(72) Inventors: CHENG, Long; Alibaba Group Legal Depart- TR, TT, TZ,UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.  
ment 5/F, Building 3, No.969 West Wen Yi Road, Yu Hang 
District, Hangzhou, Zhejiang 311121 (CN). LI, Yanpeng; (84) Designated States (unless otherwise indicated, for every 
Alibaba Group Legal Department 5/F, Building 3, No.969 kind of regional protection available): ARIPO (BW, GH, 
West Wen Yi Road, Yu Hang District, Hangzhou, Zhejiang GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, 
311121 (CN). UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, 
TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, 
(54) Title: METHODS AND DEVICES FOR PROTECTING SENSITIVE DATA OF TRANSACTION ACTIVITY BASED ON 
SMART CONTRACT IN BLOCKCHAIN 
- Receive activity data for creating Eccount for transaction activity' 332 
activity data indicating at least identifier of smart contract in 
blockchain and expiration tine of transaction activity 
Send activity data to authenticaticn server for requesting digital '- 3D4 
certificate of activity data 
Cause account for transaction activity to be created after receiving -- 3D0 
digital certificate from authentication server 
FIG. 3 
(57) Abstract: Disclosed herein are methods, devices, and apparatuses, including computer programs stored on computer-readable 
media, for protecting sensitive data of a transaction activity based on a smart contract in a blockchain. One of the methods includes: 
receiving activity data for creating an account for the transaction activity from a user, the activity data including at least an identifier 
of the smart contract in the blockchain and an expiration time of the transaction activity; sending the activity data to an authentication 
server for requesting a digital certificate of the activity data, wherein the digital certificate stores the identifier of the smart contract, 
and an expiration time of the digital certificate is set to be the expiration time of the transaction activity; and causing the account for 
the transaction activity to be created after to receiving the digital certificate from the authentication server.
W O 2019/101228 A2111I||||||||||||||||||||||||||||||||HE 1 |||||||||||||III |||||||||| 
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))