Results 21 to 30 of about 1,357 (137)
Rational Threshold Cryptosystems
CoRR, 2019 We propose a framework for threshold cryptosystems under a permissionless-economic model in which the participants are rational profit-maximizing entities. To date, threshold cryptosystems have been considered under permissioned settings with a limited adversary.
David Yakira, Ido Grayevsky, Avi Asayag
openaire +2 more sources
Delay‐Scheduled Adaptive Observer Control Strategy for Nonlinear Systems With Time‐Varying Delays
IET Control Theory &Applications, Volume 20, Issue 1, January/December 2026.This paper proposes a delay‐scheduled adaptive observer controller for nonlinear systems with unknown time‐varying delays and bounded disturbances. By integrating an adaptive observer with an LMI‐based state‐feedback controller, the method ensures robust stability and H∞$H_\infty$ performance. Numerical simulations on delayed Lorenz and hyperchaotic Lü
Mohammad Ali Labbaf Khaniki +1 more
wiley +1 more source
The Redoc II Cryptosystem [PDF]
, 2007 A new cryptosystem called REDOC II is introduced. Analysis of a miniature (one-round) version of this system is given.
Thomas W. Cusick, Michael C. Wood
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Hyperchaos‐Driven 3D RGB Image Scrambling and Encryption for Multi‐Image Security
IET Image Processing, Volume 20, Issue 1, January/December 2026.The proposed encryption scheme scrambles N colour images by stacking them into a three‐dimensional red, green, blue image, generating a secure 256‐bit key using SHA‐256 and a user‐provided salt, and applying a five‐dimensional multi‐wing hyperchaotic system to produce random key streams.
Muhammad Hanif +6 more
wiley +1 more source
A Novel Hybrid Image Encryption Scheme Using Henon Map for Secure Image Communication
IET Information Security, Volume 2026, Issue 1, 2026.The combination of chaos theory and cryptographic methodologies constitutes a pivotal aspect of the information security. Owing to certain attributes of images, like their large data capacity and significant redundancy, image encryption needs specialized techniques instead of conventional text encryption.
Saba Inam +6 more
wiley +1 more source
Enhancing E‐Commerce Security Based on Involution Function Using Twin Key AES Cipher
IET Information Security, Volume 2026, Issue 1, 2026.In the realm of surging e‐commerce data and increasing digital transactions, ensuring end‐to‐end security is paramount to protect sensitive information and maintain user trust. The Advanced Encryption Standard (AES), a cornerstone of network security, relies on symmetric key encryption for secure communication.
Biresh Kumar +11 more
wiley +1 more source
An Algebraic Surface Cryptosystem [PDF]
, 2009 We construct a public-key cryptosystem based on an NP-complete problem in algebraic geometry. It is a problem of finding sections on fibered algebraic surfaces; in other words, we use a solution to a system of multivariate equations of high degrees. Our cryptosystem is a revised version of the algebraic surface cryptosystem (ASC) we constructed earlier
Koichiro Akiyama +2 more
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Simple Generalized Group‐Oriented Cryptosystems Using ElGamal Cryptosystem [PDF]
Informatica, 2003 Summary: In the generalized group-oriented cryptosystem, the sender can send a conditional message to a group of users such that only the specified sets of users in this group can cooperate to decrypt this message. We use an ElGamal cryptosystem and an elliptic curve ElGamal cryptosystem to achieve the purposes of generalization and group-orientation ...
Chou Chen Yang +3 more
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Corruption‐Correctable MACs via Combinatorial Group Testing and Erasure Correcting Codes
IET Information Security, Volume 2026, Issue 1, 2026.We have developed a corruption‐correctable message authentication code (CCMAC) that enables data integrity to be verified and corruptions of data to be corrected up to a certain threshold. As in a previous technique for identifying corrupted points, called corruption detectable MAC (CDMAC), the proposed scheme utilizes a system model composed of two ...
Isamu Furuya +3 more
wiley +1 more source
Resisting Quantum Key Distribution Attacks Using Quantum Machine Learning
IET Quantum Communication, Volume 7, Issue 1, January/December 2026.Quantum key distribution (QKD) promises secure communication but remains vulnerable to advanced quantum attacks. We propose a hybrid quantum long short‐term memory (QLSTM) model that combines quantum‐enhanced learning with classical deep learning to detect attacks such as photon‐number splitting, Trojan‐Horse and detector blinding.
Ali Al‐Kuwari +4 more
wiley +1 more source