scholarly journals Implementasi Zero Knowledge Proof Menggunakan Protokol Feige Fiat Shamir Untuk Verifikasi Tiket Rahasia

2016 ◽  
Vol 7 (2) ◽  
pp. 91-97
Author(s):  
Willy Sudiarto Raharjo ◽  
Dessy Sutanti
Keyword(s):  
Information Security ◽  
Interactive Proof ◽  
Zero Knowledge ◽  
Confidential Information ◽  
Identity Verification ◽  
Verification Method ◽  
Index Terms ◽  
Proof Verification ◽  
Security Property ◽  
Zero Knowledge Proof

Cryptography is known for it’s ability to protect confidential information, but it can also be used for other purposes. One of them is for identity verification or authentication. One of the biggest disadvantages of traditional authencation method is at the end of the session, the verifier knows about secrets which is supposed to be known only by prover. In this paper, we implemented a ZeroKnowledge Proof-based secret ticket verification system using Feige Fiat Shamir protocol. The goal of this system is to help prover identified themselves to the verifier, but also prevent the verifier to understand anything about the prover’s secret information. The system is also able to prevent ticket duplication or double-use of tickets by using an interactive proof verification method. By combining it with cryptography, not only we can achieve completeness and soundness property of Zero-Knowledge Proof, but we can also achieve information security property. Index Terms - Feige Flat Shamir, Verification, Zero Knowledge Proof.

Zero Knowledge Proofs

2018 ◽  
pp. 111-123 ◽  
Author(s):  
Kannan Balasubramanian ◽  
Mala K.
Keyword(s):  
Real World ◽  
The Other ◽  
Interactive Proof ◽  
Zero Knowledge ◽  
Practical Applications ◽  
Proof Of Knowledge ◽  
Real World Applications ◽  
Special Case ◽  
Zero Knowledge Proof

Zero knowledge protocols provide a way of proving that a statement is true without revealing anything other than the correctness of the claim. Zero knowledge protocols have practical applications in cryptography and are used in many applications. While some applications only exist on a specification level, a direction of research has produced real-world applications. Zero knowledge protocols, also referred to as zero knowledge proofs, are a type of protocol in which one party, called the prover, tries to convince the other party, called the verifier, that a given statement is true. Sometimes the statement is that the prover possesses a particular piece of information. This is a special case of zero knowledge protocol called a zero-knowledge proof of knowledge. Formally, a zero-knowledge proof is a type of interactive proof.

Study on Quantum Bit Commitment

2012 ◽  
Vol 263-266 ◽  
pp. 3076-3078
Author(s):  
Xiao Qiang Guo ◽  
Li Hong Li ◽  
Cui Ling Luo ◽  
Yi Shuo Shi
Keyword(s):  
Information Security ◽  
Secret Sharing ◽  
Oblivious Transfer ◽  
Zero Knowledge ◽  
Quantum Bit ◽  
Bit Commitment ◽  
Commitment Scheme ◽  
Zero Knowledge Proof ◽  
Turing Award

The Bit Commitment (BC) is an important basic agreement in cryptography . The concept was first proposed by the winner of the Turing Award in 1995 ManuelBlum. Bit commitment scheme can be used to build up zero knowledge proof, verified secret sharing, throwing coins etc agreement.Simultaneously and Oblivious Transfer together constitute the basis of secure multi-party computations. Both of them are hotspots in the field of information security. We investigated unconditional secure Quantum Bit Commitment (QBC) existence. And we constructed a new bit commitment model – double prover bit commitment. The Quantum Bit Commitment Protocol can be resistant to errors caused by noise.

The Market Value and Reputational Effects from Lost Confidential Information

2015 ◽  
Vol 5 (4) ◽  
Author(s):  
Joseph K. Tanimura ◽  
Eric W. Wehrly
Keyword(s):  
Information Security ◽  
Market Value ◽  
Direct Costs ◽  
Publicly Traded ◽  
Confidential Information ◽  
Publicly Traded Companies ◽  
Security Breaches ◽  
Customer Information ◽  
Employee Information

According to many business publications, firms that experience information security breaches suffer substantial reputational penalties. This paper examines incidents in which confidential information, for a firms customers or employees, is stolen from or lost by publicly traded companies. Firms that experience such breaches suffer statistically significant losses in the market value of their equity. On the whole, the data indicate that these losses are of similar magnitudes to the direct costs. Thus, direct costs, and not reputational penalties, are the primary deterrents to information security breaches. Contrary to many published assertions, on average, firms that lose customer information do not suffer reputational penalties. However, when firms lose employee information, we find significant reputational penalties.

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.

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