A Polynomial Subset-Based Efficient Multi-Party Key Management System for Lightweight Device Networks

Wireless mesh network (WMN) is considered as one of most emerging field for the research work in today's networking area due to its various approaches available to handle the network resources. Various architectures have been proposed so far and main key challenge for the design of this network is their vulnerability to security attacks. Therefore an efficient key management is required to overcome from such security exploitation such as unauthorised access to the network. WMNs need to be clustered into multiple groups to achieve fast and efficient security mechanism to overcome from security attacks. Therefore, we have proposed a group key agreement protocol based on Diffie-Hellman protocol and digital signature to authenticate the mesh entities within the group. The authentication took place between trusted authority (TA) and mesh clients with efficient communication and computational cost and results in reduction of packet loss by an attacker in wireless network which improves the overall performance of the WMNs. Our experimental result proves that it achieves better communication and computational cost with non-repudiation attack.

Wireless Sensor Networks are installed in hostile areas. The security issues in wireless sensor networks are very important. Getting secure links between nodes is a challenging problem in WSNs. They are more vulnerable to security attacks than wired networks. In order to protect the sensitive data in WSN can be protected using secret keys to encrypt the exchanged messages between communicating nodes. Key management is essential for many security services such as confidentiality and authentication. The symmetric or asymmetric key cryptography or Trusted-server schemes are used to solve this problem. Asymmetric key cryptography increases network security but it increases computational, memory, and energy overhead. Symmetric key cryptography provides less security and it is efficient key management scheme. Trusted server schemes use key management server. Because there is usually no trusted infrastructure it is not very suitable for sensor networks. In this paper, we have proposed Mobile Agent (MA) Based Key Distribution (MAKD). In MAKD, Mobile Agents are used for dissemination of public keys and update of shared keys. Each sensor node constructs different symmetric keys with its neighbors, and communication security is achieved by data encryption and mutual authentication with these keys. Simulation results show that MAKD is scalable and with less communication overhead.

Since the Internet of Things (IoT) will be entwined with everything we use in our daily life, the consequence of security flaws escalates. Smart objects will govern most of the home appliances and car engines yielding potential disaster scenarios. In this context, successful attacks could lead to chaos and scary scenarios (www.darkreading.com). Unprotected personal information may expose sensitive and embarrassing data to the public and attacks may threaten not only our computers and smart devices, but our intimacy and perhaps our lives too. Because persons and objects will be bonded with each other, user consent becomes critical. Therefore, thing, object, and user Identity will be the focus of future IoT security solutions, yielding a Trust, Security, and Privacy (TSP) paradigm, which may constitute the Achilles' heel of IoT. While security issues are quite straightforward, mainly from background knowledge, privacy issues are far more complex. Privacy constitutes a rather challenging task, even for the m...

A major issue in many applications of Wireless Sensor Networks (WSNs) is ensuring security. Particularly, in military applications, sensors are usually deployed in hostile areas where they can be easily captured and operated by an adversary. Most of security attacks in WSNs are due to the lack of security guaranties in terms of authentication, integrity, and confidentiality. These services are often provided using cryptographic primitives where sensor nodes need to agree on a set of secret keys. Current key distribution schemes are not fully adapted to the tiny, low-cost, and fragile nature of sensors that are equipped with limited computation capability, reduced memory size, and battery-based power supply. This paper investigates the design of an efficient key distribution and management scheme for wireless sensor networks. The proposed scheme can ensure the generation and distribution of different encryption keys intended to secure individual and group communications. This is performed based on elliptic curve public key encryption using Diffie-Hellman like key exchange that is applied at different levels of the network topology. In addition, a re-keying procedure is performed using secret sharing techniques. This scheme is more efficient and less complex than existing approaches, due to the reduced number of messages and the less processing overhead required to accomplish key exchange. Furthermore, few number of encryption keys with reduced sizes are managed in sensor nodes, which optimizes memory usage and enhances scalability to large size networks.

In a mobile wireless ad hoc network, mobile nodes cooperate to form a network without using any infrastructure such as access points or base stations. Instead, the mobile nodes forward packets for each other, allowing communication among nodes outside wireless transmission range. As the use of wireless networks increases, security in this domain becomes a very real concern. One fundamental aspect of providing confidentiality and authentication is key distribution. While public-key encryption has provided these properties historically, ad hoc networks are resource constrained and benefit from symmetric key encryption. In this paper, we propose a new key management mechanism to support secure group multicast communications in ad hoc networks. The scheme proposes a dynamic construction of hierarchical clusters based on a novel density function adapted to frequent topology changes. The presented mechanism ensures a fast and efficient key management with respect to the sequential 1 to n multicast service.

Advanced distribution automation system is an integrate part of smart grid, and a reliable communication network constitutes the core of the advanced distribution automation system. However, the use of commercial on-the-shelf technologies, standard protocols, combined with increased interConnectivity with other networks, has exposed them to wide range of network security problems. Considering the characteristics of the group communication in the distribution network, one of the solutions for avoiding vulnerability is the group data encryption with group key. This paper focuses on the issues of group key management for advanced distribution automation system. Based on a three-tier hierarchal network model, and by utilizing one-way key derivation algorithm, an efficient key management scheme is presented in the paper.

Wireless sensor networks are often deployed in hostile environments and operated on an unattended mode require secure communication among the sensor nodes within the networks. In this paper, we present an energy efficient dynamic mixed key management based on virtual grid for wireless sensor networks.First,we divide the whole area into many clusters and a cluster is composed of many virtual grid,and there is only a active node in a grid to reduce energy consumption;Second,we introduce the typical energy model to compute energy consume and a long sleeping state to reduce energy consumption. In addition, we adopt mixed strategy to achieve dynamic key management,namely,we use two key to achieve active node communicate with cluster head,which the random key is generates by active nodes and head,then generate public key;while we use pairwise key to communicate with neighbor cluster heads which has the different pairwise key for different heads.Compared with the random key based predistribution schemesin, q-composite scheme,our scheme has better performance on security and storage overhead.

The security of Wireless Sensor Networks (WSNs) has a direct reliance on secure and efficient key management. This leaves key management as a fundamental research topic in the field of WSNs security. Among the proposed key management schemes for WSNs security, LEAP (Localized Encryption and Authentication Protocol) has been regarded as an efficient protocol over the last years. LEAP supports the establishment of four types of keys. The security of these keys is under the assumption that the initial deployment phase is secure and the initial key is erased from sensor nodes after the initialization phase. However, the initial key is used again for node addition after the initialization phase whereas the new node can be compromised before erasing the key. A time-based key management scheme rethought the security of LEAP. We show the deficiency of the time-based key management scheme and proposed a key management scheme for multi-phase WSNs in this paper. The proposed scheme disperses the damage resulting from the disclosure of the initial key. We show it has better resilience and higher key connectivity probability through the analysis.

Problem statement: The security in Wireless Sensor Networks (WSN) is a critical issue due to the inherent limitations of computational capacity, storage capacity and power usage. Key management only makes sure the communicating nodes possess the necessary keys, at the same time protecting the confidentiality, integrity and authenticity of the communicated data. Approach: Proposed a RSA-CRT methodology for authenticated broadcast in the wireless sensor networks and analyzed the proposed with existing methodologies indicating their advantages, drawbacks and weaknesses. Results: The proposed RSA with CRT algorithm is improved the secured routing paradigm and provides efficient key management which using optimal encryption/decryption of broadcast messages authentication. Conclusion: The proposed system countermeasures the attacks in the network layer of WSN and it will reduce the communication overhead, storage space and energy consumption of nodes.

Key management is a major challenge to achieve security in wireless sensor networks. Previous research on sensor network security mainly considers homogeneous sensor networks, where all sensor nodes have the same capabilities. The recent research has shown that the survivability of the homogeneous sensor network can be improved if sensor nodes are grouped in clusters in which a powerful cluster head assigned. In this paper, we adopt a Heterogeneous Sensor Network (HSN) model for better performance and security. We proposed a novel key management scheme, which utilizes Elliptic Curve Cryptography and the t-degree trivariate symmetric polynomial in the design of an efficient key management scheme for sensor nodes. In addition, we also design a dynamic key update technique based on one-way hash chain and Time Slice mechanism which significantly reduced the communication overhead in key agreement and update phase. The performance evaluation and security analysis show that the proposed key management scheme can provide perfect resilience against node capture and scalability with significant saving on communication overhead and storage space.

In this paper we present an efficient and scalable group key management scheme for secure one-to-many multicast. The proposed scheme has several advantages over existing protocols. It supports dynamic subgrouping and does not require reliable multicast service to provide key distribution. In addition, a one-way hash function is adopted to handle massive member join and move requests efficiently without secret key transmissions and encryption/decryption computations. We also demonstrate how to deploy fast MPEG encryption algorithms and digital rights management systems to the scheme. The proposed group key management scheme is especially suitable for delay-sensitive multimedia multicast applications and resource-constraint equipments

Owing to the security requirements of wireless sensor network, the background of Wireless Sensor Network (WSN) is to be analyzed with different threats and attack models. Physical compromising of sensor nodes by an adversary is an emerging problem in sensor network and accordingly, it is necessary to provide an environment with efficient key management techniques due to resource constraints on sensor network. It is obvious to evaluate the efficiency of symmetric key management schemes for WSN, since it is not feasible to use traditional key management techniques such as asymmetric key cryptosystem and Key Distribution Center (KDC). This survey paper aims to report an extensive study on classification of pairwise key pre-distribution techniques. Further a smaller portion of analysis and security issues using pairwise key management is pronounced. Analysed results shows that polynomial pool based method have higher probability of communication by non-compromised nodes when compared with other schemes. The proposed survey effectively track the merits and demerits of different key predistribution schemes, also the communication overhead and memory overhead is reduced in polynomial pool based method during execution.

Heterogeneous online/offline signcryption for secure communication in Internet of Things

The rapid expansion of the Internet of Things (IoT) has introduced critical security challenges due to heterogeneous device capabilities, constrained computational and energy resources, large-scale connectivity, and dynamic network environments. Existing security solutions are often fragmented and fail to provide seamless protection across the entire IoT data lifecycle. This paper proposes a comprehensive end-to-end security architecture designed to protect IoT systems from the device layer to the application layer. The proposed framework integrates lightweight mutual authentication, efficient key management, secure communication protocols, data encryption at rest and in transit, fine-grained access control, and optional decentralized trust mechanisms. In addition, edge-level security functions such as intrusion detection and secure firmware updates are incorporated to enhance system resilience. The architecture ensures essential security properties including confidentiality, integrity, availability, authentication, and non-repudiation while maintaining low computational and communication overhead suitable for resource-constrained IoT devices. The framework is evaluated using performance metrics such as end-to-end latency, energy consumption, scalability, and resistance to common cyberattacks. Experimental results demonstrate improved resilience against routing attacks, replay attacks, impersonation, and man-in-the-middle attacks, with minimal impact on system performance, making the proposed approach suitable for secure and scalable IoT deployments.

Internet of Things-based environments pose various challenges due to their anytime/anywhere computing, and the efficient cryptographic based key management is one of the major challenges in Internet of Things. The key management life cycle consists of initialization, key generation, key registration, key backup, key update, key recovery, and key revocation. Our contribution in this paper is to summarize the state-of-the-art key management schemes and techniques in different scenarios, such as mobile ad hoc networks, wireless sensor networks, and the Internet of Things environments. Further different issues related specifically to the Internet of Things environment are discussed and the causes and effects pertaining to the security breach for Internet of Things are identified. Furthermore, in this research work, we develop a novel permutation of threshold and identity-based key management schemes for the Internet of Things environment and have proposed future directions to counteract the attacks on confidentiality, integrity, authentication, and availability of security services in the Internet of Things environment and identified the two key management schemes, that is, identity and threshold schemes for Internet of Things, to resolve Internet of Things key management issues and maximum possible security services effective implementation. We evaluate our scheme with the help of mathematical and statistical techniques.