Implementation and Optimization of Zero-Knowledge Proof Circuit Based on Hash Function SM3
Sensors, 2022 With the increasing demand for privacy protection in the blockchain, the universal zero-knowledge proof protocol has been developed and widely used. Because hash function is an important cryptographic primitive in a blockchain, the zero-knowledge proof ...
Yang Yang +7 more
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Disjunctions for Hash Proof Systems: New Constructions and Applications [PDF]
Lecture Notes in Computer Science, 2015 Hash Proof Systems were first introduced by Cramer and Shoup (Eurocrypt’02) as a tool to construct efficient chosen-ciphertext-secure encryption schemes. Since then, they have found many other applications, including password authenticated key exchange, oblivious transfer, and zero-knowledge arguments.
Michel Abdalla +2 more
exaly +5 more sources
Key Encapsulation Mechanisms from Extractable Hash Proof Systems, Revisited [PDF]
Lecture Notes in Computer Science, 2013 In CRYPTO 2010, Wee proposed the notion of ‘‘extractable hash proof systems” (XHPS), and its richer version, ‘‘all-but-one XHPS” (ABO-XHPS), and showed that chosen ciphertext secure (CCA secure) key encapsulation mechanisms (KEM) can be constructed from them.
Takahiro Matsuda +2 more
exaly +2 more sources
A scalable post quantum secure blockchain framework with adaptive time consensus in cloud environments [PDF]
Scientific ReportsBlockchain deployments continue to face challenges related to scalability, energy consumption, and susceptibility of classical cryptographic primitives to emerging quantum attacks.
M. Velmurugan, M. Rajeev Kumar
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ASIC-Resistance of Multi-Hash Proof-of-Work Mechanisms for Blockchain Consensus Protocols
IEEE Access, 2018 Blockchain technology rapidly gained popularity based on its open and decentralized operation. Consensus protocol is the core mechanism of a blockchain network that securely maintains the distributed ledger from possible attacks from adversaries.
Hyungmin Cho
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Leakage-Resilient Chosen-Ciphertext Secure Public-Key Encryption from Hash Proof System and One-Time Lossy Filter [PDF]
Lecture Notes in Computer Science, 2013 We present a new generic construction of a public-key encryption (PKE) scheme secure against leakage-resilient chosen-ciphertext attacks (LR-CCA), from any Hash Proof System (HPS) and any one-time lossy filter (OT-LF). Efficient constructions of HPSs and OT-LFs from the DDH and DCR assumptions suggest that our construction is a practical approach to LR-
Baodong Qin, Shengli Liu, Liu Shengli
exaly +3 more sources
Online Payment Using Blockchain [PDF]
ITM Web of Conferences, 2020 Increasing list of records is with blockchain where each record is linked with the help of cryptography. Every block in the chain contains timestamp, transaction details and hash of a previous block, hash is cryptographic hash.
Thanapal Karthikeya +3 more
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Efficient Generation of Program Execution Hash
IEEE Access, 2022 Distributed computing systems often require verifiable computing techniques in case their node is untrusted. To verify a node’s computation result, proof-of-work (PoW) is often utilized as a basis of verifiable computing method; however, this ...
Eunyeong Ahn +4 more
doaj +1 more source
Blockchain and cloud computing-based secure electronic healthcare records storage and sharing
Frontiers in Public Health, 2022 Healthcare information is essential for both service providers and patients. Further secure sharing and maintenance of Electronic Healthcare Records (EHR) are imperative.
Amna Amanat +6 more
doaj +1 more source
An Enhanced Blockchain-Based IoT Digital Forensics Architecture Using Fuzzy Hash
IEEE Access, 2021 Due to businesses’ growing use of IoT services in their day-to-day operations and the increased use of smart devices, digital forensic investigations involving such systems will need increasingly sophisticated digital evidence collection and ...
Wael A. Mahrous +2 more
doaj +1 more source