Results 1 to 10 of about 546,820 (245)
Blockchain Processing Technique Based on Multiple Hash Chains for Minimizing Integrity Errors of IoT Data in Cloud Environments [PDF]
Sensors, 2021 As IoT (Internet of Things) devices are diversified in the fields of use (manufacturing, health, medical, energy, home, automobile, transportation, etc.), it is becoming important to analyze and process data sent and received from IoT devices connected ...
Yoon-Su Jeong
doaj +2 more sources
Permutation-Based Hash Chains with Application to Password Hashing [PDF]
IACR Transactions on Symmetric CryptologyHash chain based password systems are a useful way to guarantee authentication with one-time passwords. The core idea dates back to Lamport, and is specified in RFC 1760 as S/Key. At CCS 2017, Kogan et al.
Charlotte Lefevre, Bart Mennink
doaj +4 more sources
Fast Verification of Hash Chains [PDF]
Lecture Notes in Computer Science, 2004 A hash chain is a sequence of hash values x i = hash(x i − 1) for some initial secret value x 0. It allows to reveal the final value x n and to gradually disclose the pre-images x n − 1, x n − 2, ... whenever necessary. The correctness of a given value x i can then be verified by re-computing the chain and comparing the result to x n .
Marc Fischlin
exaly +2 more sources
On Fast Verification of Hash Chains
Lecture Notes in Computer Science, 2010 A hash chain H for a hash function hash(·) is a sequence of hash values 〈xn, xn−1,..., x0 〉, where x0 is a secret value, xi is generated by xi=hash(xi−1) for 1≤i≤n, and xn is a public value. Hash values of H are disclosed gradually from xn−1 to x0. The correctness of a disclosed hash value xi can be verified by checking the equation $x_n \stackrel{?}{=}
Sung Je Hong +2 more
exaly +4 more sources
Energy-Efficient Hash Chain Traversal
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, 2011 A hash chain H for a one-way hash function h(·) is a sequence of hash values , where vn is a secret value, vi is generated by vi=h(vi+1) for i=n-1,n-2,...,0 an0d v0 is a public value. A hash chain traversal algorithm T computes and outputs the hash chain H, returning vi in time period (called round) i for 1≤i≤n.
Dae Hyun Yum, Pil Joong Lee, Jae Woo Seo
exaly +4 more sources
Generalized Hash Chain Traversal with Selective Output
IEICE Transactions on Information and Systems, 2010 A hash chain H for a one-way hash function h(·) is a sequence of hash values , where v0 is a public value, vn a secret value, and vi =h(vi+1). A hash chain traversal algorithm T computes and outputs the hash chain H, returning vi in time period (called round) i for 1 ≤ i ≤ n.
Dae Hyun Yum, Pil Joong Lee, Jae Woo Seo
exaly +4 more sources
Digital signatures over HMAC entangled chains
Engineering Science and Technology, an International Journal, 2022 In this work we present a new digital signature method based on hash chains and the hash message authentication code (HMAC). Unlike Blockchain technology, our approach establishes that the database of transactions is distributed among users, so each one ...
Luis Adrián Lizama-Pérez
doaj +1 more source
Dynamic Cryptography Integrated Secured Decentralized Applications with Blockchain Programming
Wasit Journal of Computer and Mathematics Science, 2022 Blocks and chains are the building blocks of the blockchain, which is a community network. Blocks and chains are two terms used to describe collections of data information.
Jamal Kh-Madhloom
doaj +1 more source
PLoS ONE, 2022 As an important part of the second defense line of the power system, the Security and Stability Control System (SSCS) is of great significance to ensure the reliable operation of the power system. However, SSCS still lacks an effective security mechanism
Zhaohan Li +5 more
doaj +1 more source
Reversible and Plausibly Deniable Covert Channels in One-Time Passwords Based on Hash Chains
Applied Sciences, 2021 Covert channels enable stealthy communications over innocent appearing carriers. They are increasingly applied in the network context. However, little work is available that exploits cryptographic primitives in the networking context to establish such ...
Jörg Keller, Steffen Wendzel
doaj +1 more source