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A paper presented at the ICICS 2019 conference describes what is claimed to be a `provably secure group authentication [protocol] in the asynchronous communication model'. We show here that this is far from being the case, as the protocol…

Cryptography and Security · Computer Science 2021-06-10 Chris J Mitchell

Smart grids are intelligent power transmission networks that monitor and control communication participants and grid nodes to ensure bidirectional flow of information and power between all nodes. To secure the smart grid, it is very…

Cryptography and Security · Computer Science 2022-03-08 Yong-Jin Kim , Dok-Jun An , Son-Gyong Kim , Kum-Sok Sin , You-Jin Jong , Ok-Chol Ri

Protecting personal computers (PCs) from unauthorized access typically relies on password authentication, which is know to suffer from cognitive burden and weak credentials. As many users nowadays carry mobile devices with advanced security…

Human-Computer Interaction · Computer Science 2025-07-15 Andreas Pramendorfer , Rainhard Dieter Findling

Numerous resource-limited smart objects (SOs) such as sensors and actuators have been widely deployed in smart environments, opening new attack surfaces to intruders. The severe security flaw discourages the adoption of the Internet of…

Cryptography and Security · Computer Science 2020-11-13 Jianhua Li , Jiong Jin , Lingjuan Lyu , Dong Yuan , Yingying Yang , Longxiang Gao , Chao Shen

Password users frequently employ passwords that are too simple, or they just reuse passwords for multiple websites. A common complaint is that utilizing secure passwords is too difficult. One possible solution to this problem is to use a…

Cryptography and Security · Computer Science 2019-06-04 Elan Rosenfeld , Santosh Vempala , Manuel Blum

Redactable signature schemes and sanitizable signature schemes are methods that permit modification of a given digital message and retain a valid signature. This can be applied to decentralized identity systems for delegating identity…

Cryptography and Security · Computer Science 2023-10-27 Bryan Kumara , Mark Hooper , Carsten Maple , Timothy Hobson , Jon Crowcroft

Cloud computing can provide a flexible way to effectively share data among multiple users since it can overcome the time and location constraints of computing resource usage. However, the users of cloud computing are still reluctant to…

Cryptography and Security · Computer Science 2019-04-03 Kwangsu Lee

Nowadays, mobile banking becomes a popular tool which consumers can conduct financial transactions such as shopping, monitoring accounts balance, transferring funds and other payments. Consumers dependency on mobile needs, make people take…

Cryptography and Security · Computer Science 2018-09-17 Dea Saka Kurnia Putra , Mohamad Ali Sadikin , Susila Windarta

The multi-access variant of the coded caching problem in the presence of an external wiretapper is investigated . A multi-access coded caching scheme with $K$ users, $K$ caches and $N$ files, where each user has access to $L$ neighbouring…

Information Theory · Computer Science 2021-05-13 K. K. Krishnan Namboodiri , B. Sundar Rajan

Despite being more secure and strongly promoted, two-factor (2FA) or multi-factor (MFA) schemes either fail to protect against recent phishing threats such as real-time MITM, controls/relay MITM, malicious browser extension-based phishing…

Cryptography and Security · Computer Science 2024-06-14 Sneha Shukla , Gaurav Varshney , Shreya Singh , Swati Goel

In this paper we proposed two identification schemes based on the root problem. The proposed schemes are secure against passive attacks assuming that the root problem (RP) is hard in braid groups.

Cryptography and Security · Computer Science 2007-05-23 Sunder Lal , Atul Chaturvedi

Recently, Tsai et al. (Laser Phys. Lett. 17, 075202, 2020) proposed a lightweight authenticated semi-quantum key distribution protocol for a quantum participant to share a secret key with a classical participant. However, this study points…

Quantum Physics · Physics 2020-10-21 Jun Gu , Tzonelih Hwang

Wireless sensor networks consist of a large number of distributed sensor nodes so that potential risks are becoming more and more unpredictable. The new entrants pose the potential risks when they move into the secure zone. To build a door…

Cryptography and Security · Computer Science 2019-03-29 Tran Khanh Dang , Khanh T. K. Tran

Security of wireless sensor network (WSN) is always considered a critical issue and has a number of considerations that separate them from traditional wireless sensor network. First, sensor devices are typically vulnerable to physical…

Networking and Internet Architecture · Computer Science 2012-09-26 Nasrin Sultana , Tanvir Ahmed , A. B. M. Siddique Hossain

Current methods for authentication and key agreement based on public-key cryptography are vulnerable to quantum computing. We propose a novel approach based on artificial intelligence research in which communicating parties are viewed as…

Cryptography and Security · Computer Science 2021-07-12 Ibrahim H. Ahmed , Josiah P. Hanna , Elliot Fosong , Stefano V. Albrecht

Authentication is a process by which an entity,which could be a person or intended computer,establishes its identity to another entity.In private and public computer networks including the Internet,authentication is commonly done through…

Cryptography and Security · Computer Science 2013-01-11 Maheswara Rao Valluri

Quantum communication networks are connected by various devices to achieve communication or distributed computing for users in remote locations. In order to solve the problem of generating temporary session key for secure communication in…

Quantum Physics · Physics 2023-04-03 Li-Zhen Gao , Xin Zhang , Song Lin , Ning Wang , Gong-De Guo

A recently proposed authenticated key agreement protocol is shown to be insecure. In particular, one of the two parties is not authenticated, allowing an active man in the middle opponent to replay old messages. The protocol is essentially…

Cryptography and Security · Computer Science 2019-06-25 Chris J Mitchell

We consider repeated communication sessions between a RFID Tag (e.g., Radio Frequency Identification, RFID Tag) and a RFID Verifier. A proactive information theoretic security scheme is proposed. The scheme is based on the assumption that…

Cryptography and Security · Computer Science 2009-03-31 Shlomi Dolev , Marina Kopeetsky , Adi Shamir

By expanding the connection of objects to the Internet and their entry to human life, the issue of security and privacy has become important. In order to enhance security and privacy on the Internet, many security protocols have been…

Cryptography and Security · Computer Science 2019-07-29 Masoumeh Safkhani , Nasour Bagheri