SG11201907281WA - Blockchain data protection based on generic account model and homomorphic encryption - Google Patents

Blockchain data protection based on generic account model and homomorphic encryption

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Publication number
SG11201907281WA
SG11201907281WA SG11201907281WA SG11201907281WA SG11201907281WA SG 11201907281W A SG11201907281W A SG 11201907281WA SG 11201907281W A SG11201907281W A SG 11201907281WA SG 11201907281W A SG11201907281W A SG 11201907281WA SG 11201907281W A SG11201907281W A SG 11201907281WA
Authority
SG
Singapore
Prior art keywords
random number
international
transaction
building
generale
Prior art date
Application number
SG11201907281WA
Inventor
Wenbin Zhang
Baoli Ma
Huanyu Ma
Original Assignee
Alibaba Group Holding Ltd
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Filing date
Publication date
Application filed by Alibaba Group Holding Ltd filed Critical Alibaba Group Holding Ltd
Publication of SG11201907281WA publication Critical patent/SG11201907281WA/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/008—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols involving homomorphic encryption
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/10—Network architectures or network communication protocols for network security for controlling access to devices or network resources
    • H04L63/102—Entity profiles
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/12—Applying verification of the received information
    • H04L63/123—Applying verification of the received information received data contents, e.g. message integrity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/12—Applying verification of the received information
    • H04L63/126—Applying verification of the received information the source of the received data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
    • H04L9/3218—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials using proof of knowledge, e.g. Fiat-Shamir, GQ, Schnorr, ornon-interactive zero-knowledge proofs
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
    • H04L9/3236—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials using cryptographic hash functions
    • H04L9/3239—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials using cryptographic hash functions involving non-keyed hash functions, e.g. modification detection codes [MDCs], MD5, SHA or RIPEMD
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
    • H04L9/3247—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving digital signatures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/50—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols using hash chains, e.g. blockchains or hash trees
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
    • H04L2209/56—Financial cryptography, e.g. electronic payment or e-cash

Abstract

RiednlhattbeWeek asset a/emended with tees nodeA 326 Valythatta aia wale efts wededace's meals ' team cilia Thearlim omountard the dam --0 328 ::.0 accounts usereedeA and user rade B 332 Cahalan basal en Biota velue the Ouranyal wet adthetansajai sue Gmbh lo tereaceon annuli at a anima catibuding lo the thaw 310 Generale ceranitssents Peanut Be &wine, are enoyAs the correepoting random numbers 312 based on prcisnalanc HE . _ Generale war we range pads 314 Generale a sm., 316 Use a peseta • •: f user no— 318 Stata W O 2019/07 2300 A2 FIG. 3 300 308 , - 304 Biechelain KS* ,-302 Aer not A (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 18 April 2019 (18.04.2019) WIPO I PCT 111111111111110111111111111111101111101001111111111111111111111111111011111011110111111 (10) International Publication Number WO 2019/072300 A2 (51) International Patent Classification: Not classified (21) International Application Number: PCT/CN2018/122539 (22) International Filing Date: 21 December 2018 (21.12.2018) (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) Inventors: ZHANG, Wenbin; Alibaba Group Legal De- partment 5/F, Building 3, No. 969 West Wen Yi Road, Yuhang District, Hangzhou, Zhejiang 311121 (CN). MA, Baoli; Alibaba Group Legal Department 5/F, Building 3, No. 969 West Wen Yi Road, Yuhang District, Hangzhou, Zhejiang 311121 (CN). MA, Huanyu; Alibaba Group Le- gal Department 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 With 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). (54) Title: BLOCKCHAIN DATA PROTECTION BASED ON GENERIC ACCOUNT MODEL AND HOMOMORPHIC ENCRYP- TION (57) : Implementations of the specification include receiving trans- action data associated with the transaction, the transaction data comprising: data representative of a plurality of assets, a first commitment that hides a first random number and a transaction amount of the transaction, a second commitment that hides a second random number and a change, the transac- tion amount and a third random number both encrypted by a public key of the second node based on a probabilistic homomorphic encryption (HE) scheme, the change and a fourth random number both encrypted by a public key of the first node based on the probabilistic HE scheme, and a zero-knowledge proof (ZKP); determining, based on the ZKP, whether the transaction is valid based on determining if the first random number is equal to the third random number, the second random number is equal to the fourth random number, and the transaction amount hidden in the first commitment is equal to the transaction amount encrypted by the public key of the second node. [Continued on next page] WO 2019/072300 A2 I VIII I 01111I 01110101111111101flO 1 001 IMO Ill 01 II 11 0 IHOEMIll 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))
SG11201907281WA 2018-12-21 2018-12-21 Blockchain data protection based on generic account model and homomorphic encryption SG11201907281WA (en)

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PCT/CN2018/122539 WO2019072300A2 (en) 2018-12-21 2018-12-21 Blockchain data protection based on generic account model and homomorphic encryption

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EP (1) EP3566197B1 (en)
JP (1) JP6811334B2 (en)
KR (1) KR102213414B1 (en)
CN (1) CN111602161B (en)
AU (1) AU2018347201B2 (en)
BR (1) BR112019016474A2 (en)
CA (1) CA3052997C (en)
MX (1) MX2019009412A (en)
PH (1) PH12019501849A1 (en)
RU (1) RU2719451C1 (en)
SG (1) SG11201907281WA (en)
WO (1) WO2019072300A2 (en)
ZA (1) ZA201905220B (en)

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EP3566197A2 (en) 2019-11-13
ZA201905220B (en) 2020-05-27
AU2018347201B2 (en) 2020-08-27
PH12019501849A1 (en) 2020-03-09
US20190327078A1 (en) 2019-10-24
RU2719451C1 (en) 2020-04-17
US10680800B2 (en) 2020-06-09
EP3566197B1 (en) 2022-03-30
KR102213414B1 (en) 2021-02-09
AU2018347201A1 (en) 2020-07-09
EP3566197A4 (en) 2020-03-11
CN111602161B (en) 2023-08-22
KR20200079219A (en) 2020-07-02
JP2020515885A (en) 2020-05-28
CN111602161A (en) 2020-08-28
CA3052997C (en) 2021-01-26
CA3052997A1 (en) 2019-04-18
WO2019072300A2 (en) 2019-04-18
US20200195419A1 (en) 2020-06-18
US10708039B1 (en) 2020-07-07
WO2019072300A3 (en) 2019-10-24
MX2019009412A (en) 2019-10-02
JP6811334B2 (en) 2021-01-13

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