SG11201903425PA - System and method for information protection - Google Patents

System and method for information protection

Info

Publication number
SG11201903425PA
SG11201903425PA SG11201903425PA SG11201903425PA SG11201903425PA SG 11201903425P A SG11201903425P A SG 11201903425PA SG 11201903425P A SG11201903425P A SG 11201903425PA SG 11201903425P A SG11201903425P A SG 11201903425PA SG 11201903425P A SG11201903425P A SG 11201903425PA
Authority
SG
Singapore
Prior art keywords
transaction
commitment
change
blinding factor
encrypted
Prior art date
Application number
SG11201903425PA
Inventor
Huanyu Ma
Wenbin Zhang
Baoli Ma
Zheng Liu
Jiahui Cui
Original Assignee
Alibaba Group Holding Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alibaba Group Holding Ltd filed Critical Alibaba Group Holding Ltd
Publication of SG11201903425PA publication Critical patent/SG11201903425PA/en

Links

Classifications

    • 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
    • H04L9/3226—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 a predetermined code, e.g. password, passphrase or PIN
    • 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
    • H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
    • H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/60—Protecting data
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00—Payment architectures, schemes or protocols
    • G06Q20/04—Payment circuits
    • G06Q20/06—Private payment circuits, e.g. involving electronic currency used among participants of a common payment scheme
    • G06Q20/065—Private payment circuits, e.g. involving electronic currency used among participants of a common payment scheme using e-cash
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00—Payment architectures, schemes or protocols
    • G06Q20/38—Payment protocols; Details thereof
    • G06Q20/382—Payment protocols; Details thereof insuring higher security of transaction
    • 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
    • H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
    • H04L9/0861—Generation of secret information including derivation or calculation of cryptographic keys or passwords
    • 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
    • H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
    • H04L9/0894—Escrow, recovery or storing of secret information, e.g. secret key escrow or cryptographic key storage
    • 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
    • H04L9/32—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
    • H04L9/3252—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 using DSA or related signature schemes, e.g. elliptic based signatures, ElGamal or Schnorr schemes
    • 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q2220/00—Business processing using cryptography
    • 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
    • H04L2209/04—Masking or blinding
    • 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
    • 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
    • H04L9/3255—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 using group based signatures, e.g. ring or threshold signatures

Abstract

INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) --, (19) World Intellectual Property MTh 0 111111 11 111 11111 0 11110 1 0 111 11111 11 11 0 110111 11 111 II 11 11110111 0 11 1111 Organization International Bureau (10) International Publication Number (43) International Publication Date ......•*\") WO 2019/072277 A2 18 April 2019 (18.04.2019) WIP0 I PCT (51) International Patent Classification: Department 5/F, Building 3, No.969 West Wen Yi Road, Not classified Yu Hang District, Hangzhou, Zhejiang 311121 (CN). (21) International Application Number: (74) Agent: BEIJING BESTIPR INTELLECTUAL PROP- PCT/CN2018/117558 ERTY LAW CORPORATION; Room 409, Tower B, Ka (22) International Filing Date: Wall Building, No. 9 Shangdi 3rd Street, Haidian District, 27 November 2018 (27.11.2018) Beijing 100085 (CN). (25) Filing Language: English (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, (26) Publication Language: English 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, (71) Applicant: ALIBABA GROUP HOLDING LIMITED DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, [—/CN]; Fourth Floor, One Capital Place, P.O. BOX 847, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, George Town, Grand Cayman (KY). KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, (72) Inventors: MA, Huanyu; Alibaba Group Legal Depart- MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, ment 5/F, Building 3, No.969 West Wen Yi Road, Yu OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, Hang District, Hangzhou, Zhejiang 311121 (CN) ZHANG, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, Wenbin; Alibaba Group Legal Department 5/F, Building 3, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. No.969 West Wen Yi Road, Yu Hang District, Hangzhou, (84) Designated States (unless otherwise indicated, for every Zhejiang 311121 (CN). MA, Baoli; Alibaba Group Legal kind of regional protection available): ARIPO (BW, GH, Department 5/F, Building 3, No.969 West Wen Yi Road, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, Zhejiang 311121 Yu Hang District, Hangzhou, (CN). LIU, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, = Zheng; Alibaba Group Legal Department 5/F, Building 3, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, No.969 West Wen Yi Road, Yu Hang District, Hangzhou, EE, ES, FI, FR, GB, GR, HR, HU, 1E, IS, IT, LT, LU, LV, —_ Zhejiang 311121 (CN). CUI, Jiahui; Alibaba Group Legal MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, = = Title: SYSTEM AND METHOD FOR INFORMATION PROTECTION (54) 3001 (57) : A computer-implemented method for information protection com- prises: committing a transaction amount of a transaction with a first commitment — all; committing a transaction amount t of a transaction with a rst fi commitment scheme to obtain a transaction commitment value T, and scheme to obtain a transaction commitment value, committing a change of the = = committing a change y of the transaction with a second commitment transaction with a second commitment scheme to obtain a change commitment scheme to obtain a change commitment value Y, the first commitment value, the first commitment scheme comprising a transaction blinding factor, and — = scheme comprising a transaction blinding factor r„ and the second the second commitment scheme comprising a change blinding factor; encrypting commitment scheme comprising a change blinding factor r y a first combination of the change blinding factor and the change with a first key; _ = _ transmitting the transaction blinding factor, the transaction amount, and the trans- 2g2; encrypting a first combination of the change blinding factor r y and action commitment value to a recipient node associated with a recipient for the = the change y with a first key KA recipient node to verify the transaction; in response to that the recipient success- = fully verifies the transaction, obtaining an encrypted second combination of the = — transaction blinding factor and the transaction amount encrypted with a second = key. X).2; transmitting the transaction blinding factor r, the transaction — amount t, and the transaction commitment value T to a recipient node associated with a recipient of the transaction for the recipient node to verify the transaction Cl 461 1 ll in response to that the recipient node successfully verifies the transaction, obtaining an encrypted second combination of the h transaction blinding factor r and the transaction amount t encrypted with a second key KB h NI NI =transmitting the encrypted first combination and the encrypted 0 second combination to a plurality of nodes in a blockchain for the nodes C.: in the blockchain to verify the transaction Il e FIG. 3 NI C [Continued on next page] WO 2019/072277 A211111110111110111111111111111101111101 II 01 IIIEMOHOIHEMIHNHOHE 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 21(2)(a) — without international search report and to be republished upon receipt of that report (Rule 48.2(g))
SG11201903425PA 2018-11-27 2018-11-27 System and method for information protection SG11201903425PA (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2018/117558 WO2019072277A2 (en) 2018-11-27 2018-11-27 System and method for information protection

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SG11201903425PA true SG11201903425PA (en) 2019-05-30

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US (2) US11218455B2 (en)
EP (1) EP3545644B8 (en)
JP (1) JP6714156B2 (en)
KR (1) KR102150814B1 (en)
CN (1) CN110337665B (en)
AU (1) AU2018347195B2 (en)
BR (1) BR112019008036A2 (en)
CA (1) CA3040357C (en)
ES (1) ES2859569T3 (en)
MX (1) MX2019004357A (en)
MY (1) MY188126A (en)
PH (1) PH12019500836A1 (en)
PL (1) PL3545644T3 (en)
RU (1) RU2735439C2 (en)
SG (1) SG11201903425PA (en)
WO (1) WO2019072277A2 (en)
ZA (1) ZA201902471B (en)

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