Patent AU-2019207310-A1 (AU)
Title: Anti-replay attack authentication protocol
Inventor: LV HONG
IPC: H04L9/32
Filed: 2019-04-26
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 2019/137563 A2 
18 July 2019 (18.07.2019) W IPO I PCT 
(51) International Patent Classification: HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, 
Not classified KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, 
(21) International Application Number: MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, 
PCT/CN2019/084510 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, 
(22) International Filing Date: TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.  
26 April 2019 (26.04.2019) (84) Designated States (unless otherwise indicated, for every 
(25) Filing Language: English kind of regional protection available): ARIPO (BW, GH, 
GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, 
(26)PublicationLanguage: English UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, 
(71) Applicant: ALIBABA GROUP HOLDING LIMITED TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, 
[-/CN]; Fourth Floor, One Capital Place, P.O. Box 847, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, 
George Town, Grand Cayman (KY). 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, 
(72) Inventor: LV, Hong; Alibaba Group Legal Department 5/ RM,ML, MR, NE,SN, TD, TG).  
F, Building3, No.969 West WenYi Road, YuHangDistrict, 
Hangzhou, Zhejiang 311121 (CN). Published: 
(74) Agent: BEIJING BESTIPR INTELLECTUAL PROP- - upon request of the applicant, before the expiration of the 
ERTY LAW CORPORATION; Room 409, Tower B, Ka time limit referred to in Article 2](2)(a) 
Wal Building, No. 9 Shangdi 3rd Street, Haidian District, - without international search report and to be republished 
Beijing 100085 (CN). upon receipt ofthat report (Rule 48.2(g)) 
(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, Fl, GB, GD, GE, GH, GM, GT, HN, 
(54) Title: ANTI-REPLAY ATTACK AUTHENTICATION PROTOCOL 
(57) Abstract: Disclosed herein are methods, systems, and apparatus, 
300 including computer programs encoded on computer storage media, for 
enhancing blockchain network security. Embodiments of this specifica
208 tion include receiving a transaction request from a client, wherein the 
transaction request includes a transaction requested to be recorded on 
a blockchain and a transaction hash calculated based on hashing the 
304 38 transaction; determining the transaction hash is not previously stored in 
a cache resource or the blockchain; storing the transaction hash in the 
306 acker cache resource; and executing the transaction request.  
- ssage Aheii4onCo (MAC 
-- 210 
212 <,-2G4 
216 
o FIG. 3