Tsu-Yang Wu^1,2, Haozhi Wu², Maoxin Tang³, Saru Kumari⁴, Chien-Ming Chen^1,*

CMC-Computers, Materials & Continua, Vol.85, No.1, pp. 1715-1732, 2025, DOI:10.32604/cmc.2025.065560 - 29 August 2025

Abstract With the rapid development and widespread adoption of Internet of Things (IoT) technology, the innovative concept of the Internet of Vehicles (IoV) has emerged, ushering in a new era of intelligent transportation. Since vehicles are mobile entities, they move across different domains and need to communicate with the Roadside Unit (RSU) in various regions. However, open environments are highly susceptible to becoming targets for attackers, posing significant risks of malicious attacks. Therefore, it is crucial to design a secure authentication protocol to ensure the security of communication between vehicles and RSUs, particularly in scenarios where More >

Yanan Liu¹, Lei Cao^1,*, Zheng Zhang^1,*, Ge Li², Shuo Qiu¹, Suhao Wang¹

CMC-Computers, Materials & Continua, Vol.84, No.3, pp. 4997-5019, 2025, DOI:10.32604/cmc.2025.066836 - 30 July 2025

Abstract As the adoption of Vehicular Ad-hoc Networks (VANETs) grows, ensuring secure communication between smart vehicles and remote application servers (APPs) has become a critical challenge. While existing solutions focus on various aspects of security, gaps remain in addressing both high security requirements and the resource-constrained nature of VANET environments. This paper proposes an extended-Kerberos protocol that integrates Physical Unclonable Function (PUF) for authentication and key agreement, offering a comprehensive solution to the security challenges in VANETs. The protocol facilitates mutual authentication and secure key agreement between vehicles and APPs, ensuring the confidentiality and integrity of vehicle-to-network… More >

Tsu-Yang Wu^1,2,3, Haozhi Wu³, Maoxin Tang^1,2, Saru Kumari⁴, Chien-Ming Chen^1,2,*

CMC-Computers, Materials & Continua, Vol.84, No.2, pp. 3175-3192, 2025, DOI:10.32604/cmc.2025.065717 - 03 July 2025

Abstract As a model for the next generation of the Internet, the metaverse—a fully immersive, hyper-temporal virtual shared space—is transitioning from imagination to reality. At present, the metaverse has been widely applied in a variety of fields, including education, social entertainment, Internet of vehicles (IoV), healthcare, and virtual tours. In IoVs, researchers primarily focus on using the metaverse to improve the traffic safety of vehicles, while paying limited attention to passengers’ social needs. At the same time, Social Internet of Vehicles (SIoV) introduces the concept of social networks in IoV to provide better resources and services… More >

Guojun Wang^1,2, Qi Liu^3,*

CMC-Computers, Materials & Continua, Vol.78, No.3, pp. 4471-4488, 2024, DOI:10.32604/cmc.2024.047669 - 26 March 2024

Abstract With the rapid advancement in exploring perceptual interactions and digital twins, metaverse technology has emerged to transcend the constraints of space-time and reality, facilitating remote AI-based collaboration. In this dynamic metasystem environment, frequent information exchanges necessitate robust security measures, with Authentication and Key Agreement (AKA) serving as the primary line of defense to ensure communication security. However, traditional AKA protocols fall short in meeting the low-latency requirements essential for synchronous interactions within the metaverse. To address this challenge and enable nearly latency-free interactions, a novel low-latency AKA protocol based on chaotic maps is proposed. This… More >

Chaoyang Li¹, Yanbu Guo¹, Mianxiong Dong^2,*, Gang Xu³, Xiu-Bo Chen⁴, Jian Li⁴, Kaoru Ota²

CMC-Computers, Materials & Continua, Vol.75, No.1, pp. 2043-2059, 2023, DOI:10.32604/cmc.2023.033670 - 06 February 2023

Abstract Internet of Medical Things (IoMT) plays an essential role in collecting and managing personal medical data. In recent years, blockchain technology has put power in traditional IoMT systems for data sharing between different medical institutions and improved the utilization of medical data. However, some problems in the information transfer process between wireless medical devices and mobile medical apps, such as information leakage and privacy disclosure. This paper first designs a cross-device key agreement model for blockchain-enabled IoMT. This model can establish a key agreement mechanism for secure medical data sharing. Meanwhile, a certificateless authenticated key… More >

Tsu-Yang Wu¹, Qian Meng¹, Lei Yang¹, Saru Kumari², Matin Pirouz^3,*

CMES-Computer Modeling in Engineering & Sciences, Vol.134, No.1, pp. 317-341, 2023, DOI:10.32604/cmes.2022.019595 - 24 August 2022

Abstract The development of the Internet of Things has facilitated the rapid development of various industries. With the improvement in people’s living standards, people’s health requirements are steadily improving. However, owing to the scarcity of medical and health care resources in some areas, the demand for remote surgery has gradually increased. In this paper, we investigate remote surgery in the healthcare environment. Surgeons can operate robotic arms to perform remote surgery for patients, which substantially facilitates successful surgeries and saves lives. Recently, Kamil et al. proposed a secure protocol for surgery in the healthcare environment. However, More >

Hussein Abulkasim^1,*, Eatedal Alabdulkreem², Safwat Hamad³

CMC-Computers, Materials & Continua, Vol.73, No.1, pp. 225-232, 2022, DOI:10.32604/cmc.2022.025727 - 18 May 2022

Abstract Quantum key agreement is a promising key establishing protocol that can play a significant role in securing 5G/6G communication networks. Recently, Liu et al. (Quantum Information Processing 18(8):1-10, 2019) proposed a multi-party quantum key agreement protocol based on four-qubit cluster states was proposed. The aim of their protocol is to agree on a shared secret key among multiple remote participants. Liu et al. employed four-qubit cluster states to be the quantum resources and the X operation to securely share a secret key. In addition, Liu et al.'s protocol guarantees that each participant makes an equal More >

Chandrashekhar Meshram^1,*, Agbotiname Lucky Imoize^2,3, Sajjad Shaukat Jamal⁴, Parkash Tambare⁵, Adel R. Alharbi⁶, Iqtadar Hussain⁷

CMC-Computers, Materials & Continua, Vol.72, No.1, pp. 1373-1389, 2022, DOI:10.32604/cmc.2022.024996 - 24 February 2022

Abstract The Human-Centered Internet of Things (HC-IoT) is fast becoming a hotbed of security and privacy concerns. Two users can establish a common session key through a trusted server over an open communication channel using a three-party authenticated key agreement. Most of the early authenticated key agreement systems relied on pairing, hashing, or modular exponentiation processes that are computationally intensive and cost-prohibitive. In order to address this problem, this paper offers a new three-party authenticated key agreement technique based on fractional chaotic maps. The new scheme uses fractional chaotic maps and supports the dynamic sensing of More >

Somayeh Soltani¹, Seyed Amin Hosseini Seno¹, Juli Rejito², Rahmat Budiarto^3,*

CMC-Computers, Materials & Continua, Vol.71, No.3, pp. 5891-5910, 2022, DOI:10.32604/cmc.2022.023697 - 14 January 2022

Abstract Satellite networks are recognized as the most essential communication infrastructures in the world today, which complement land networks and provide valuable services for their users. Extensive coverage and service stability of these networks have increased their popularity. Since eavesdropping and active intrusion in satellite communications are much easier than in terrestrial networks, securing satellite communications is vital. So far, several protocols have been proposed for authentication and key exchange of satellite communications, but none of them fully meet the security requirements. In this paper, we examine one of these protocols and identify its security vulnerabilities.… More >

P. Thirumoorthy^1,*, K. S. Bhuvaneshwari², C. Kamalanathan³, P. Sunita³, E. Prabhu⁴, S. Maheswaran⁵

Computer Systems Science and Engineering, Vol.42, No.2, pp. 577-587, 2022, DOI:10.32604/csse.2022.021717 - 04 January 2022

Abstract The development of wireless sensor network with Internet of Things (IoT) predicts various applications in the field of healthcare and cloud computing. This can give promising results on mobile health care (M-health) and Telecare medicine information systems. M-health system on cloud Internet of Things (IoT) through wireless sensor network (WSN) becomes the rising research for the need of modern society. Sensor devices attached to the patients’ body which is connected to the mobile device can ease the medical services. Security is the key connect for optimal performance of the m-health system that share the data More >