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Even though a method to perfectly sign quantum messages has not been known, the arbitrated quantum signature scheme has been considered as one of good candidates. However, its forgery problem has been an obstacle to the scheme being a…

量子物理 · 物理学 2015-01-27 Taewan Kim , Jeong Woon Choi , Nam-Su Jho , Soojoon Lee

The paper presents an authentication scheme for remote systems using smart card. The scheme prevents the scenario of many logged in users with the same login identity, and does not require password/verifier table to validate the users'…

密码学与安全 · 计算机科学 2008-01-04 Manik Lal Das

In this letter, we proposed a quantum authentication protocol. The authentication process is implemented by the symmetric cryptographic scheme with quantum effects.

量子物理 · 物理学 2007-05-23 Guihua Zeng , Guangcan Guo

This paper presents an identity based multi-proxy multi-signcryption scheme from pairings. In this scheme a proxy signcrypter group could authorized as a proxy agent by the coopration of all members in the original signcryption group. Then…

密码学与安全 · 计算机科学 2007-05-23 Sunder Lal , Tej Singh

Low-cost portable devices capable of capturing signature signals are being increasingly used. Additionally, the social and legal acceptance of the written signature for authentication purposes is opening a range of new applications. We…

The paper deals with time-scaling transformations of dynamical systems. Such scaling functions operate a change of coordinates on the time axis of the system trajectories preserving its phase portrait. Exploiting this property, a chaos…

混沌动力学 · 物理学 2015-05-13 Donatello Materassi , Michele Basso

Steganography embeds secret messages in seemingly innocuous carriers for covert communication under surveillance. Current Provably Secure Steganography (PSS) schemes based on language models can guarantee computational indistinguishability…

密码学与安全 · 计算机科学 2026-04-30 Kaiyi Pang , Minhao Bai

The ability to know and verifiably demonstrate the origins of messages can often be as important as encrypting the message itself. Here we present an experimental demonstration of an unconditionally secure digital signature (USS) protocol…

Users of quantum networks can securely communicate via so-called (quantum) conference key agreement --making their identities publicly known. In certain circumstances, however, communicating users demand anonymity. Here, we introduce a…

Under the emerging network coding paradigm, intermediate nodes in the network are allowed not only to store and forward packets but also to process and mix different data flows. We propose a low-complexity cryptographic scheme that exploits…

密码学与安全 · 计算机科学 2016-11-17 Joao P. Vilela , Luisa Lima , Joao Barros

We consider an Internet of Battlefield Things (IoBT) system consisting of multiple devices that want to securely communicate with each other during a mission in the presence of an adversary with unbounded computational power. The adversary…

密码学与安全 · 计算机科学 2025-08-05 Mohammad Moltafet , Hamid R. Sadjadpour , Zouheir Rezki

In this paper, we propose a Directed threshold multisignature scheme without SDC. This signature scheme is applicable when the message is sensitive to the signature receiver; and the signatures are generated by the cooperation of a number…

密码学与安全 · 计算机科学 2007-05-23 Manoj Kumar

Fingerprint authentication is a popular security mechanism for smartphones and laptops. However, its adoption in web and cloud environments has been limited due to privacy concerns over storing and processing biometric data on servers. This…

密码学与安全 · 计算机科学 2024-04-02 Hyunmin Choi , Simon Woo , Hyoungshick Kim

Many reports regarding online fraud in varieties media create skepticism for conducting transactions online, especially through an open network such as the Internet, which offers no security whatsoever. Therefore, encryption technology is…

密码学与安全 · 计算机科学 2012-07-19 Mohammad Nabil Almunawar

This encryption algorithm is mainly designed for having a secure file transfer in the low privilege servers and as well as in a secured environment too. This methodology will be implemented in the data center and other important data…

密码学与安全 · 计算机科学 2011-11-11 Bhargav Balakrishnan

An undeniable signature scheme is type of digital signature where the signer retains control over the signature's verifiability. Therefore with the approval of the signer, only an authenticated verifier can verify the signature. In this…

密码学与安全 · 计算机科学 2024-10-28 Kunal Dey , Mansi Goyal , Bupendra Singh , Aditi Kar Gangopadhyay

We demonstrate theoretically and experimentally that secure communication using intermediate-energy (mesoscopic) coherent states is possible. Our scheme is different from previous quantum cryptographic schemes in that a short secret key is…

量子物理 · 物理学 2009-11-07 Geraldo A. Barbosa , Eric Corndorf , Prem Kumar , Horace P. Yuen

Recently, deep learning, which uses Deep Neural Networks (DNN), plays an important role in many fields. A secure neural network model with a secure training/inference scheme is indispensable to many applications. To accomplish such a task…

密码学与安全 · 计算机科学 2020-12-10 Chin-Yu Sun , Allen C. -H. Wu , TingTing Hwang

Cooperative relaying is utilized as an efficient method for data communication in wireless sensor networks and the Internet of Things (IoT). However, sometimes due to the necessity of multi-hop relaying in such communication networks, it is…

信号处理 · 电气工程与系统科学 2020-11-17 Milad Tatar Mamaghani , Ali Kuhestani , Hamid Behroozi

We present an algorithm that efficiently performs blind decoding of MIMO signals. That is, given no channel state information (CSI) at either the transmitter or receiver, our algorithm takes a block of samples and returns an estimate of the…

信号处理 · 电气工程与系统科学 2019-05-10 Thomas Dean , Jonathan Perlstein , Mary Wootters , Andrea Goldsmith