Results 41 to 50 of about 38,603 (168)
Optimized CSIDH Implementation Using a 2-Torsion Point
Cryptography, 2020 The implementation of isogeny-based cryptography mainly use Montgomery curves, as they offer fast elliptic curve arithmetic and isogeny computation. However, although Montgomery curves have efficient 3- and 4-isogeny formula, it becomes inefficient when ...
Donghoe Heo +4 more
doaj +1 more source
A Blockchain‐Assisted Electronic Medical Records by Using Proxy Reencryption and Multisignature
Security and Communication Networks, Volume 2022, Issue 1, 2022., 2022 Electronic medical records (EMR) have been commonly used in medical institutions in recent years. In particular, the combination of EMR and the cloud server has significantly improved the work efficiency and therapeutic level of the hospital. It also raises some security concerns, e.g., the information leaks.
Xiaoguang Liu +4 more
wiley +1 more source
Privacy‐Preserving Task Distribution Mechanism with Cloud‐Edge IoT for the Mobile Crowdsensing
Security and Communication Networks, Volume 2022, Issue 1, 2022., 2022 Mobile crowdsensing under big data provides an efficient, win‐win, and low‐budget data collection solution for IoT applications such as the smart city. However, its open and all access scenarios raise the threat of data security and user privacy during task distribution of mobile crowdsensing.
Liquan Jiang, Zhiguang Qin, Jinbo Xiong
wiley +1 more source
Toward Privacy‐Preserving Blockchain‐Based Electricity Auction for V2G Networks in the Smart Grid
Security and Communication Networks, Volume 2022, Issue 1, 2022., 2022 With the development of electric vehicle (EV) technology, EV has become a key component in the future smart grid. Due to the sheer large number of EVs on the road, the emerging vehicle‐to‐grid (V2G) technology, which allows for two‐way electrical flows between EVs and the power grid, is gaining traction.
Weijian Zhang +6 more
wiley +1 more source
Memory Efficient Implementation of Modular Multiplication for 32-bit ARM Cortex-M4
Applied Sciences, 2020 In this paper, we present scalable multi-precision multiplication implementation and scalable multi-precision squaring implementation for 32-bit ARM Cortex-M4 microcontrollers.
Hwajeong Seo
doaj +1 more source
BBARHS: Blockchain‐Based Anonymous Ride‐Hailing Scheme for Autonomous Taxi Network
Security and Communication Networks, Volume 2022, Issue 1, 2022., 2022 In the past few years, ride‐hailing platforms such as Uber, Waymo, and Baidu have built their own autonomous taxi system. Unlike public transit services, ride‐hailing platforms raise severe privacy issues. To provide excellent autonomous taxi service, some significant security and privacy problems must be addressed.
Kun Wang +5 more
wiley +1 more source
Image cipher applications using the elliptical curve and chaos
International Journal of Applied Mathematics and Computer Science, 2020 A novel symmetric cryptosystem of the substitution permutation network type is presented for image encryption in 14 rounds. An algorithm is developed to generate 15 keys to encrypt images where each key is the image size.
Silva-García Víctor Manuel +4 more
doaj +1 more source
IsoqurPEKS: An Isogeny‐Based Quantum‐Resistant Public‐Key Encryption Scheme with Keyword Search
Security and Communication Networks, Volume 2022, Issue 1, 2022., 2022 Since the convenience and advancement of cloud applications, many users (e.g., companies or individuals) adopt remote cloud services to reduce the local storage overload and computing consumption. However, before transferring them to the cloud server, users always encrypt outsourced data for the privacy of important data, which deprives flexible usage ...
Qing Fan +5 more
wiley +1 more source
Identifying supersingular elliptic curves [PDF]
LMS Journal of Computation and Mathematics, 2012 AbstractGiven an elliptic curve E over a field of positive characteristic p, we consider how to efficiently determine whether E is ordinary or supersingular. We analyze the complexity of several existing algorithms and then present a new approach that exploits structural differences between ordinary and supersingular isogeny graphs.
openaire +3 more sources
Hash functions from superspecial genus-2 curves using Richelot isogenies
Journal of Mathematical Cryptology, 2020 In 2018 Takashima proposed a version of Charles, Goren and Lauter’s hash function using Richelot isogenies, starting from a genus-2 curve that allows for all subsequent arithmetic to be performed over a quadratic finite field 𝔽p2.
Castryck Wouter +2 more
doaj +1 more source