SG11201903552PA - Blockchain data protection using homomorphic encryption - Google Patents

Blockchain data protection using homomorphic encryption

Info

Publication number
SG11201903552PA
SG11201903552PA SG11201903552PA SG11201903552PA SG11201903552PA SG 11201903552P A SG11201903552P A SG 11201903552PA SG 11201903552P A SG11201903552P A SG 11201903552PA SG 11201903552P A SG11201903552P A SG 11201903552PA SG 11201903552P A SG11201903552P A SG 11201903552PA
Authority
SG
Singapore
Prior art keywords
account
random number
international
public key
node
Prior art date
Application number
SG11201903552PA
Other languages
English (en)
Inventor
Wenbin Zhang
Baoli Ma
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 SG11201903552PA publication Critical patent/SG11201903552PA/en

Links

Classifications

    • 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
    • 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
    • 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
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
    • H04L9/0643—Hash functions, e.g. MD5, SHA, HMAC or f9 MAC
    • 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
    • H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
    • H04L9/0819—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s)
    • H04L9/0825—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s) using asymmetric-key encryption or public key infrastructure [PKI], e.g. key signature or public key certificates
    • 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
    • H04L9/0869—Generation of secret information including derivation or calculation of cryptographic keys or passwords involving random numbers or seeds
    • 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
    • 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
    • H04L2209/08—Randomization, e.g. dummy operations or using noise
    • 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
    • H04L2209/16—Obfuscation or hiding, e.g. involving white box
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Power Engineering (AREA)
  • Strategic Management (AREA)
  • Finance (AREA)
  • Physics & Mathematics (AREA)
  • General Business, Economics & Management (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)
  • Storage Device Security (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)
SG11201903552PA 2018-11-07 2018-11-07 Blockchain data protection using homomorphic encryption SG11201903552PA (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2018/114421 WO2019072269A2 (en) 2018-11-07 2018-11-07 PROTECTION OF BLOCK CHAIN DATA USING A HOMOMORPHIC ENCRYPTION

Publications (1)

Publication Number Publication Date
SG11201903552PA true SG11201903552PA (en) 2019-05-30

Family

ID=66100026

Family Applications (1)

Application Number Title Priority Date Filing Date
SG11201903552PA SG11201903552PA (en) 2018-11-07 2018-11-07 Blockchain data protection using homomorphic encryption

Country Status (16)

Country Link
US (1) US10615960B2 (es)
EP (1) EP3545640B1 (es)
JP (1) JP6767580B2 (es)
KR (1) KR102348768B1 (es)
CN (1) CN110546667B (es)
AU (1) AU2018348319B2 (es)
BR (1) BR112019008151A2 (es)
CA (1) CA3041161C (es)
ES (1) ES2876926T3 (es)
MX (1) MX2019004662A (es)
PH (1) PH12019500877A1 (es)
PL (1) PL3545640T3 (es)
RU (1) RU2708344C1 (es)
SG (1) SG11201903552PA (es)
TW (1) TWI718585B (es)
WO (1) WO2019072269A2 (es)

Families Citing this family (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11777729B2 (en) 2017-01-20 2023-10-03 Enveil, Inc. Secure analytics using term generation and homomorphic encryption
US11196541B2 (en) 2017-01-20 2021-12-07 Enveil, Inc. Secure machine learning analytics using homomorphic encryption
US11507683B2 (en) 2017-01-20 2022-11-22 Enveil, Inc. Query processing with adaptive risk decisioning
US10771237B2 (en) 2017-01-20 2020-09-08 Enveil, Inc. Secure analytics using an encrypted analytics matrix
US10873568B2 (en) 2017-01-20 2020-12-22 Enveil, Inc. Secure analytics using homomorphic and injective format-preserving encryption and an encrypted analytics matrix
US10693627B2 (en) 2017-01-20 2020-06-23 Enveil, Inc. Systems and methods for efficient fixed-base multi-precision exponentiation
US11102015B2 (en) * 2018-05-08 2021-08-24 Visa International Service Association Sybil-resistant identity generation
CN109359971B (zh) 2018-08-06 2020-05-05 阿里巴巴集团控股有限公司 区块链交易方法及装置、电子设备
CN109359974B (zh) * 2018-08-30 2020-10-30 创新先进技术有限公司 区块链交易方法及装置、电子设备
US10902133B2 (en) 2018-10-25 2021-01-26 Enveil, Inc. Computational operations in enclave computing environments
US10817262B2 (en) 2018-11-08 2020-10-27 Enveil, Inc. Reduced and pipelined hardware architecture for Montgomery Modular Multiplication
WO2019072302A2 (en) 2018-12-21 2019-04-18 Alibaba Group Holding Limited BLOCK CHAIN DATA PROTECTION BASED ON A GENERIC ACCOUNT MODEL AND A HOMOMORPHIC ENCRYPTION
RU2721008C1 (ru) 2018-12-29 2020-05-15 Алибаба Груп Холдинг Лимитед Система и способ для защиты информации
DE102019002732A1 (de) * 2019-04-15 2020-10-15 Giesecke+Devrient Gesellschaft mit beschränkter Haftung Verfahren zum direkten Übertragen von elektronischen Münzdatensätzen zwischen Endgeräten sowie Bezahlsystem
US11444776B2 (en) * 2019-05-01 2022-09-13 Kelce S. Wilson Blockchain with daisy chained records, document corral, quarantine, message timestamping, and self-addressing
CN113139873A (zh) * 2019-08-30 2021-07-20 创新先进技术有限公司 在区块链中并发执行交易的方法和装置
EP3861676A1 (en) * 2019-10-21 2021-08-11 Google LLC Verifiable consent for privacy protection
CN110766400B (zh) * 2019-10-22 2023-01-13 全链通有限公司 基于区块链的交易记录处理方法、记账节点及介质
CN111078787B (zh) * 2019-11-11 2023-07-21 重庆邮电大学 一种基于随机数映射的区块链共识方法
CN111104968B (zh) * 2019-12-02 2023-04-18 北京理工大学 一种基于区块链的安全svm训练方法
CN113055177B (zh) * 2019-12-27 2022-08-16 深圳市迅雷网络技术有限公司 区块链系统及数值信息传输方法、系统、装置、介质
CN113128999B (zh) * 2019-12-31 2024-04-12 航天信息股份有限公司 一种区块链隐私保护方法及装置
CN113065951A (zh) * 2020-01-02 2021-07-02 苏州同济区块链研究院有限公司 基于区块链的交易方法、系统、装置、设备及介质
WO2020098838A2 (en) 2020-02-03 2020-05-22 Alipay (Hangzhou) Information Technology Co., Ltd. Blockchain-based trustable gurantees
EP3794537B1 (en) 2020-02-03 2023-05-03 Alipay (Hangzhou) Information Technology Co., Ltd. Blockchain-based trustable guarantees
CN111357026B (zh) 2020-02-03 2022-06-07 支付宝(杭州)信息技术有限公司 基于区块链的可信保函
WO2020098837A2 (en) 2020-02-03 2020-05-22 Alipay (Hangzhou) Information Technology Co., Ltd. Blockchain-based trustable guarantees
EP3799643B1 (en) 2020-02-03 2023-11-08 Alipay (Hangzhou) Information Technology Co., Ltd. Blockchain-based trustable guarantees
WO2020098835A2 (en) 2020-02-03 2020-05-22 Alipay (Hangzhou) Information Technology Co., Ltd. Blockchain-based trustable gurantees
CN111523891B (zh) * 2020-04-23 2023-11-24 腾讯科技（深圳）有限公司 基于区块链的信息加密方法、装置、设备及存储介质
EP3844655B1 (en) 2020-06-08 2023-05-03 Alipay Labs (Singapore) Pte. Ltd. Managing user authorizations for blockchain-based custom clearance services
SG11202102366SA (en) 2020-06-08 2021-04-29 Alipay Labs Singapore Pte Ltd User management of blockchain-based custom clearance service platform
EP3841491B1 (en) 2020-06-08 2023-08-02 Alipay Labs (Singapore) Pte. Ltd. Blockchain-based smart contract pools
WO2020169124A2 (en) 2020-06-08 2020-08-27 Alipay Labs (singapore) Pte. Ltd. Distributed storage of custom clearance data
SG11202102402QA (en) 2020-06-08 2021-04-29 Alipay Labs Singapore Pte Ltd Blockchain-based import custom clearance data processing
EP3844654B1 (en) 2020-06-08 2023-05-17 Alipay Labs (Singapore) Pte. Ltd. Blockchain-based document registration for custom clearance
US20220083683A1 (en) * 2020-09-11 2022-03-17 Transparent Financial Systems, Inc. Distributed self-governing computer network to correlate blockchain and private computer system transactions method, apparatus, and system
US11601258B2 (en) 2020-10-08 2023-03-07 Enveil, Inc. Selector derived encryption systems and methods
US11588617B2 (en) * 2020-11-01 2023-02-21 The Toronto-Dominion Bank Validating confidential data using homomorphic computations
CN113159762B (zh) * 2021-01-28 2024-04-09 武汉天喻信息产业股份有限公司 基于Paillier和博弈论的区块链交易方法
CN112769542B (zh) * 2021-04-12 2021-06-11 富算科技(上海)有限公司 基于椭圆曲线的乘法三元组生成方法、装置、设备及介质
CN113821789B (zh) * 2021-09-26 2023-06-23 北京邮电大学 基于区块链的用户密钥生成方法、装置、设备及介质
CN114092242A (zh) * 2021-11-03 2022-02-25 支付宝(杭州)信息技术有限公司 基于范围证明实现隐私交易的方法和系统

Family Cites Families (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8744077B2 (en) * 2008-10-28 2014-06-03 International Business Machines Corporation Cryptographic encoding and decoding of secret data
CN102598576B (zh) * 2009-10-29 2014-09-17 三菱电机株式会社 数据处理装置
US8630422B2 (en) * 2009-11-10 2014-01-14 International Business Machines Corporation Fully homomorphic encryption method based on a bootstrappable encryption scheme, computer program and apparatus
US8861716B2 (en) * 2010-03-30 2014-10-14 International Business Machines Corporation Efficient homomorphic encryption scheme for bilinear forms
US8731199B2 (en) * 2012-09-28 2014-05-20 Sap Ag Zero knowledge proofs for arbitrary predicates over data
FR3001848B1 (fr) * 2013-02-01 2015-01-09 Morpho Procede de chiffrement homomorphe pour le ou exclusif et calcul securise d'une distance de hamming
US10083310B1 (en) * 2013-03-13 2018-09-25 Hrl Laboratories, Llc System and method for mobile proactive secure multi-party computation (MPMPC) using commitments
US20170019248A1 (en) * 2014-09-30 2017-01-19 Kabushiki Kaisha Toshiba Homomorphic Based Method For Distributing Data From One or More Metering Devices To Two or More Third Parties
US20160162897A1 (en) * 2014-12-03 2016-06-09 The Filing Cabinet, LLC System and method for user authentication using crypto-currency transactions as access tokens
US9875370B2 (en) * 2015-03-26 2018-01-23 Microsoft Technology Licensing, Llc Database server and client for query processing on encrypted data
WO2016200885A1 (en) * 2015-06-08 2016-12-15 Blockstream Corporation Cryptographically concealing amounts transacted on a ledger while preserving a network's ability to verify the transaction
US10713731B2 (en) * 2016-07-22 2020-07-14 Nec Corporation Method for secure ledger distribution and computer system using secure distributed ledger technology
CN106548330B (zh) * 2016-10-27 2018-03-16 上海亿账通区块链科技有限公司 基于区块链的交易验证方法及系统
CN106571905B (zh) * 2016-11-02 2019-05-17 南京邮电大学 一种数值型数据同态保序加密方法
WO2018087836A1 (ja) * 2016-11-09 2018-05-17 株式会社日立製作所 ブロックチェーン取引システムおよびブロックチェーン取引方法
CN106549749B (zh) * 2016-12-06 2019-12-24 杭州趣链科技有限公司 一种基于加法同态加密的区块链隐私保护方法
WO2018115567A1 (en) * 2016-12-19 2018-06-28 Nokia Technologies Oy Method and apparatus for private data transfer between parties
CN106845960B (zh) * 2017-01-24 2018-03-20 上海壹账通区块链科技有限公司 基于区块链的安全交易方法及系统
US10277395B2 (en) * 2017-05-19 2019-04-30 International Business Machines Corporation Cryptographic key-generation with application to data deduplication
CN107294698B (zh) * 2017-07-25 2019-11-26 西安电子科技大学 单密文同态计算的全同态加密方法
CN108021821A (zh) * 2017-11-28 2018-05-11 北京航空航天大学 多中心区块链交易隐私保护系统及方法
CN108764874B (zh) * 2018-05-17 2021-09-07 深圳前海微众银行股份有限公司 基于区块链的匿名转账方法、系统及存储介质
CN111833186A (zh) * 2018-09-20 2020-10-27 创新先进技术有限公司 基于区块链的交易方法、装置和节点设备
RU2729595C1 (ru) * 2018-11-07 2020-08-11 Алибаба Груп Холдинг Лимитед Защита данных цепочек блоков на основе модели банкнот на счетах с доказательством с нулевым разглашением
JP6830530B2 (ja) * 2018-11-07 2021-02-17 アドバンスド ニュー テクノロジーズ カンパニー リミテッド アカウントモデルの下でパブリックおよびプライベートトランザクションをサポートするブロックチェーンシステム
PL3545483T3 (pl) * 2018-11-07 2021-10-25 Advanced New Technologies Co., Ltd. Ochrona danych łańcucha bloków z zastosowaniem szyfrowania homomorficznego

Also Published As

Publication number Publication date
JP2019537348A (ja) 2019-12-19
ES2876926T3 (es) 2021-11-15
AU2018348319A1 (en) 2020-05-21
BR112019008151A2 (pt) 2019-09-10
TWI718585B (zh) 2021-02-11
CA3041161A1 (en) 2019-04-18
WO2019072269A2 (en) 2019-04-18
TW202019123A (zh) 2020-05-16
WO2019072269A3 (en) 2019-09-12
CN110546667B (zh) 2023-08-18
RU2708344C1 (ru) 2019-12-05
EP3545640B1 (en) 2021-04-07
AU2018348319B2 (en) 2020-10-01
JP6767580B2 (ja) 2020-10-14
PL3545640T3 (pl) 2021-10-18
EP3545640A4 (en) 2020-01-08
CN110546667A (zh) 2019-12-06
PH12019500877A1 (en) 2019-12-02
EP3545640A2 (en) 2019-10-02
US20190253235A1 (en) 2019-08-15
KR20200054129A (ko) 2020-05-19
MX2019004662A (es) 2019-08-21
CA3041161C (en) 2021-10-12
KR102348768B1 (ko) 2022-01-06
US10615960B2 (en) 2020-04-07

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