Patent AU-2019204723-B2 (AU)
Title: Cryptographic key management based on identity information
Inventor: FENG ZHIYUAN
IPC: G09C1/00
Filed: 2019-03-29
Granted: 2021-05-06
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 2019/120321 A2 
27 June 2019 (27.06.2019) W IPO I PCT 
(51) International Patent Classification: Wal Building, No. 9 Shangdi 3rd Street, Haidian District, 
Not classified Beijing 100085 (CN).  
(21) International Application Number: (81) Designated States (unless otherwise indicated, for every 
PCT/CN2019/080366 kind ofnational protection available): AE, AG, AL, AM, 
(22)InternationalFilingDate: AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, 
29 March 2019 (29.03.2019) 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, 
(25) Filing Language: English 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, 
(26)PublicationLanguage: English MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, 
(71) Applicant: ALIBABA GROUP HOLDING LIMITED OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, 
[-/CN]; Fourth Floor, One Capital Place, P.O. Box 847, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, 
George Town, Grand Cayman (KY). TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.  
(72) Inventors: FENG, Zhiyuan; Alibaba Group Legal Depart- (84) Designated States (unless otherwise indicated, for every 
ment 5/F, Building 3, No. 969 West Wen Yi Road, Yu Hang kind of regional protection available): ARIPO (BW, GH, 
District, Hangzhou, Zhejiang 311121 (CN). LI, Yanpeng; GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, 
Alibaba Group Legal Department 5/F, Building 3, No. 969 UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, 
West Wen Yi Road, Yu Hang District, Hangzhou, Zhejiang TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, 
311121 (CN). CHENG, Long; Alibaba Group Legal De- EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, 
partment 5/F, Building 3, No. 969 West Wen Yi Road, Yu MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, 
Hang District, Hangzhou, Zhejiang 311121 (CN). TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, 
KM, ML, MR, NE, SN, TD, TG).  
(74) Agent: BEIJING BESTIPR INTELLECTUAL PROP
ERTY LAW CORPORATION; Room 409, Tower B, Ka 
(54) Title: CRYPTOGRAPHIC KEY MANAGEMENT BASED ON IDENTITY INFORMATION 
200 (57) Abstract: Disclosed herein are methods, systems, and apparatus, including com
puter programs encoded on computer storage media, for managing cryptographic keys 
RESET IDENTITY CRYPTOGRAPHIC CHIP 202 based on user identity information. One of the methods includes receiving a request to 
store identity information and a user key pair to a memory on a chip, the request being 
digitally signed with a digital signature, the identity information uniquely identifying 
RECEIVE A HORIZATION KEY 204 the user, and the user key pair being assigned to the user; determining that the digital 
L INPT REQUEST signature is authentic based on a public key pre-stored in the memory; encrypting the 
identity information and the user key pair; and storing the identity information and the 
CALL AUTHORIZATION KEYINPUTFUNCTION 206 user key pair to the memory.  
208 
- ~ ONE-TIME j 
- PROC-RAIMMAB..E 
YES MEMORY> 
NO 
CLEAR MEMORY CONTENT 
ENCRYPTAND INPUT PUBLICAUTHORIZATION 212 
KEY 
FEND 
FIG. 2
W O 2019/120321 A2||||||||||||||||||||||||||||||||||||||||||||||||111||||||||||||||I||| 
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))