Results 31 to 40 of about 10,638,853 (320)
Efficient computation of hashes [PDF]
, 2014 The sequential computation of hashes at the core of many distributed storage systems and found, for example, in grid services can hinder efficiency in service quality and even pose security challenges that can only be addressed by the use of parallel ...
+16 more
core +3 more sources
Bottom-k and Priority Sampling, Set Similarity and Subset Sums with Minimal Independence [PDF]
, 2013 We consider bottom-k sampling for a set X, picking a sample S_k(X) consisting of the k elements that are smallest according to a given hash function h. With this sample we can estimate the relative size f=|Y|/|X| of any subset Y as |S_k(X) intersect Y|/k.
Thorup, Mikkel
core +1 more source
Challenging the increased resistance of regular hash functions against birthday attacks
Journal of Mathematical Cryptology, 2012 At Eurocrypt 2004, Bellare and Kohno presented the concept of a regular hash function. For a hash function to be regular, every hash value must have the same number of preimages in the domain.
Mouha Nicky, Sekar Gautham, Preneel Bart
doaj +1 more source
A secure and efficient cryptographic hash function based on NewFORK-256
Egyptian Informatics Journal, 2012 Cryptographic hash functions serve as a fundamental building block of information security and are used in numerous security applications and protocols such as digital signature schemes, construction of MAC and random number generation, for ensuring data
Harshvardhan Tiwari, Krishna Asawa
doaj +1 more source
Secure Parallel Image Cryptographic Hash Function Using a Novel 2D High-Randomness Hyperchaotic Map
MathematicsFor image data, the processing of each pixel using a cryptographic hash function is linear, and the existing cryptographic hash function lacks parallel processing of image width and height.
Mingrui Qi, Dongdong Wang
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Hash Algorithm In Verification Of Certificate Data Integrity And Security
Aptisi Transactions on Technopreneurship, 2021 The hash function is the most important cryptographic primitive function and is an integral part of the blockchain data structure. Hashes are often used in cryptographic protocols, information security applications such as Digital Signatures and message ...
Muhammad Rehan Anwar +2 more
doaj +1 more source
Grayscale Image Authentication using Neural Hashing
, 2016 Many different approaches for neural network based hash functions have been proposed. Statistical analysis must correlate security of them. This paper proposes novel neural hashing approach for gray scale image authentication.
Kutlu, Yakup, Yayık, Apdullah
core +2 more sources
Discrete Semantics-Guided Asymmetric Hashing for Large-Scale Multimedia Retrieval
Applied Sciences, 2021 Cross-modal hashing technology is a key technology for real-time retrieval of large-scale multimedia data in real-world applications. Although the existing cross-modal hashing methods have achieved impressive accomplishment, there are still some ...
Jun Long +3 more
doaj +1 more source
CAAI Transactions on Intelligence Technology, EarlyView., 2023 Abstract This research focuses on addressing the privacy issues in healthcare advancement monitoring with the rapid establishment of the decentralised communication system in the Internet of Medical Things (IoMT). An integrated blockchain homomorphic encryption standard with an in‐build supervised learning‐based smart contract is designed to improvise ...
Chandramohan Dhasarathan +7 more
wiley +1 more source
Simple Tabulation, Fast Expanders, Double Tabulation, and High Independence
, 2013 Simple tabulation dates back to Zobrist in 1970. Keys are viewed as c characters from some alphabet A. We initialize c tables h_0, ..., h_{c-1} mapping characters to random hash values.
Thorup, Mikkel
core +1 more source