scholarly journals Optimization of E-Commerce Platform Structure based on Blockchain Technology

2021 ◽  
Vol 9 (VI) ◽  
pp. 1334-1337
Author(s):  
Vijayalakshmi C
Keyword(s):  
Personal Information ◽  
Personal Data ◽  
Zero Knowledge ◽  
Phone Number ◽  
Blockchain Technology ◽  
Online Activities ◽  
Zero Knowledge Proof

E-Commerce has become more and more popular because of rich products, fast transactions, and free from time, locations, stores, and so on. However, the disclosure of personal data such as their IDs, addresses, and phone numbers has become a major concern for online activities. The current e-commerce model is at the crossroads of ownership and privacy. To address this, this article creates an enterprise protocol that uses smart personal contracts to protect privacy during the negotiation phase. This protocol allows contracting parties to conduct business without disclosing personal information such as identity, address, and phone number. Furthermore, we employ the zero-knowledge proof to ensure ownership.

scholarly journals A study of universal zero-knowledge proof circuit-based virtual machines that validate general operations & reduce transaction validation

2021 ◽  
Vol 18 (2) ◽  
pp. 481-497
Author(s):  
Soonhyeong Jeong ◽  
Byeongtae Ahn
Keyword(s):  
Virtual Machine ◽  
Virtual Machines ◽  
Key Generation ◽  
Zero Knowledge ◽  
Verification Algorithm ◽  
Blockchain Technology ◽  
General Operation ◽  
Zero Knowledge Proof

Recently, blockchain technology accumulates and stores all transactions. Therefore, in order to verify the contents of all transactions, the data itself is compressed, but the scalability is limited. In addition, since a separate verification algorithm is used for each type of transaction, the verification burden increases as the size of the transaction increases. Existing blockchain cannot participate in the network because it does not become a block sink by using a server with a low specification. Due to this problem, as the time passes, the data size of the blockchain network becomes larger and it becomes impossible to participate in the network except for users with abundant resources. Therefore, in this paper, we studied the zero knowledge proof algorithm for general operation verification. In this system, the design of zero-knowledge circuit generator capable of general operation verification and optimization of verifier and prover were also conducted. Also, we developed an algorithm for optimizing key generation. Based on all of these, the zero-knowledge proof algorithm was applied to and tested on the virtual machine so that it can be used universally on all blockchains.

scholarly journals Privacy-aware blockchain for personal data sharing and tracking

2019 ◽  
Vol 9 (1) ◽  
pp. 80-91 ◽  
Author(s):  
Md Mehedi Hassan Onik ◽  
Chul-Soo Kim ◽  
Nam-Yong Lee ◽  
Jinhong Yang
Keyword(s):  
Information Management ◽  
Data Sharing ◽  
Management System ◽  
Personal Information ◽  
Personal Data ◽  
Information Management System ◽  
Data Movement ◽  
General Data Protection Regulation ◽  
Blockchain Technology ◽  
Personally Identifiable Information

AbstractSecure data distribution is critical for data accountability. Surveillance caused privacy breaching incidents have already questioned existing personal data collection techniques. Organizations assemble a huge amount of personally identifiable information (PII) for data-driven market analysis and prediction. However, the limitation of data tracking tools restricts the detection of exact data breaching points. Blockchain technology, an ‘immutable’ distributed ledger, can be leveraged to establish a transparent data auditing platform. However, Art. 42 and Art. 25 of general data protection regulation (GDPR) demands ‘right to forget’ and ‘right to erase’ of personal information, which goes against the immutability of blockchain technology. This paper proposes a GDPR complied decentralized and trusted PII sharing and tracking scheme. Proposed blockchain based personally identifiable information management system (BcPIIMS) demonstrates data movement among GDPR entities (user, controller and processor). Considering GDPR limitations, BcPIIMS used off-the-chain data storing architecture. A prototype was created to validate the proposed architecture using multichain. The use of off-the-chain storage reduces individual block size. Additionally, private blockchain also limits personal data leaking by collecting fast approval from restricted peers. This study presents personal data sharing, deleting, modifying and tracking features to verify the privacy of proposed blockchain based personally identifiable information management system.

scholarly journals A Zero-Knowledge Proof System with Algebraic Geometry Techniques

2020 ◽  
Vol 10 (2) ◽  
pp. 465
Author(s):  
Edgar González Fernández ◽  
Guillermo Morales-Luna ◽  
Feliu Sagols
Keyword(s):  
Data Exchange ◽  
Graph Isomorphism ◽  
Isomorphism Problem ◽  
Proof System ◽  
Sensitive Data ◽  
Zero Knowledge ◽  
Graph Isomorphism Problem ◽  
Proof Systems ◽  
Blockchain Technology ◽  
Zero Knowledge Proof

Current requirements for ensuring data exchange over the internet to fight against security breaches have to consider new cryptographic attacks. The most recent advances in cryptanalysis are boosted by quantum computers, which are able to break common cryptographic primitives. This makes evident the need for developing further communication protocols to secure sensitive data. Zero-knowledge proof systems have been around for a while and have been considered for providing authentication and identification services, but it has only been in recent times that its popularity has risen due to novel applications in blockchain technology, Internet of Things, and cloud storage, among others. A new zero-knowledge proof system is presented, which bases its security in two main problems, known to be resistant, up to now, against quantum attacks: the graph isomorphism problem and the isomorphism of polynomials problem.

scholarly journals MODERN CONCEPT OF DIGITAL IDENTIFICATION OF AIR PASSENGERS

2018 ◽  
Vol 21 (4) ◽  
pp. 39-47
Author(s):  
N. M. Tyukalova ◽  
A. A. Razuvakin
Keyword(s):  
Data Exchange ◽  
Personal Information ◽  
Information Leakage ◽  
Personal Data ◽  
Distributed Database ◽  
Modern Concept ◽  
Biometric Data ◽  
Blockchain Technology ◽  
Airline Passengers ◽  
Processing And Storage

The article presents the main provisions of the digital passenger identification concept based on the use of blockchain technology. It is summarized that the introduction of secure biometric identification of passengers at the airport will reduce the time and financial costs associated with the inspection and going through the passport and customs control. The problematic aspects of the current legislation of the Russian Federation regulating the application of this technology are analyzed. The technology Smart Path, developed by SITA is considered. The essence of this technology is the use of biometric data as a single identification taken at each stage of the journey. The possibilities of using blockchain technology as the basis of passenger identification before the departure are analyzed, while the blockchain technology eliminates the need for centralized processing and storage of personal data of air passengers. A computer science dealing with the chain of blocks based on the cryptosystem ensures the confidentiality of data and the absence of the possibility of information leakage or misuse. It is specially noted that the technology of cryptographic protection of air passengers biometric data will become an obstacle to using personal information for illegal purposes, and the capabilities of blockchain technology will allow cross-border data exchange during international flights. It is concluded that with the use of this technology, there will be no need to maintain the staff of workers responsible for document verification and control over the identification of passengers. All these functions will be replaced by a distributed database, which cannot be destroyed or hacked. On the basis of the study, it is proposed to amend the current legislation regulating the procedure for collecting and processing the personal data of airline passengers.

scholarly journals A Blockchain-Based Sealed-Bid e-Auction Scheme with Smart Contract and Zero-Knowledge Proof

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Honglei Li ◽  
Weilian Xue
Keyword(s):  
Third Party ◽  
Zero Knowledge ◽  
The Third ◽  
Blockchain Technology ◽  
Smart Contract ◽  
Sealed Bid ◽  
Transaction Process ◽  
Bid Price ◽  
The Third Party ◽  
Zero Knowledge Proof

e-Auction improves the efficiency of bid transaction. However, the protection of bidders’ privacy, transaction fairness and verifiability, transaction data security, high cost of third-party auction center, and other issues have attracted more attention. According to the transaction process and basic principles of the sealed auction, we explored the problems existing in the current sealed-bid e-auction schemes. Based on the blockchain technology, we proposed a sealed-bid e-auction scheme with smart contract technology, Bulletproofs zero-knowledge proof protocols, and Pedersen commitment algorithm. The proposed scheme constructed an auction mechanism without the third-party auctioneer so as to restrict the behaviors of auction parties for the sake of auction security, reliability, fairness, and privacy protection. Compared with the related sealed e-auction schemes based on blockchain technologies in six metrics, we conducted the experiment to show that the proposed scheme protected the bid information from leakage well and successfully verified the winning bid price and the related bidder by all transaction participants without the third-party auctioneer.

scholarly journals An access control model for the Internet of Things based on zero-knowledge token and blockchain

2021 ◽  
Vol 2021 (1) ◽  
Author(s):  
Lihua Song ◽  
Xinran Ju ◽  
Zongke Zhu ◽  
Mengchen Li
Keyword(s):  
Internet Of Things ◽  
Access Control ◽  
Single Point ◽  
Control Model ◽  
Third Party ◽  
Security Level ◽  
Zero Knowledge ◽  
Access Control Model ◽  
Test Analysis ◽  
Zero Knowledge Proof

AbstractInformation security has become a hot topic in Internet of Things (IoT), and traditional centralized access control models are faced with threats such as single point failure, internal attack, and central leak. In this paper, we propose a model to improve the access control security of the IoT, which is based on zero-knowledge proof and smart contract technology in the blockchain. Firstly, we deploy attribute information of access control in the blockchain, which relieves the pressure and credibility problem brought by the third-party information concentration. Secondly, encrypted access control token is used to gain the access permission of the resources, which makes the user's identity invisible and effectively avoids attribute ownership exposure problem. Besides, the use of smart contracts solves the problem of low computing efficiency of IoT devices and the waste of blockchain computing power resources. Finally, a prototype of IoT access control system based on blockchain and zero-knowledge proof technology is implemented. The test analysis results show that the model achieves effective attribute privacy protection, compared with the Attribute-Based Access Control model of the same security level, the access efficiency increases linearly with the increase of access scale.

Sign in / Sign up

Export Citation Format

Share Document