Abstract
Security is a critical issue for medical and health care systems. Password-based group-authenticated key agreement for wireless sensor networks (WSNs) allows a group of sensor nodes to negotiate a common session key by using password authentication and to establish a secure channel by this session key. Many group key agreement protocols use the public key infrastructure, modular exponential computations on an elliptic curve to provide high security, and thus increase sensor nodes’ overhead and require extra equipment for storing long-term secret keys. This work develops a novel group key agreement protocol using password authentication for WSNs, which is based on extended chaotic maps and does not require time-consuming modular exponential computations or scalar multiplications on an elliptic curve. Additionally, the proposed protocol is suitable for multiple independent groups and ensures that the real identities of group members cannot be revealed. The proposed protocol is not only more secure than related group key agreement protocols but also more efficient.
Highlights
A security association which manages security in a network layer is an important matter and it involves the establishment of a shared security key between two end points to support secure associations [1]
Group authenticated key agreements for Wireless sensor networks (WSNs) enable a group of sensor nodes to authenticate each other and to establish a common key for securely communicating over public sensor networks
Most group key agreement protocols that use public keys have higher security than those without. They depend on time-consuming modular exponential computations and scalar multiplications on an elliptic curve, and are not suitable for sensor networks
Summary
A security association which manages security in a network layer is an important matter and it involves the establishment of a shared security key between two end points to support secure associations [1]. Most group key agreement protocols that use public keys have higher security than those without They depend on time-consuming modular exponential computations and scalar multiplications on an elliptic curve, and are not suitable for sensor networks. Dutta and Barua [13] proposed a password-based encrypted group-authenticated key agreement protocol These approaches do not require the maintenance of public key systems, all communicating users share the same password so these protocols do not protect the privacy of users. We present a novel password-based multi-group authenticated key agreement protocol for WSNs that was based on the extended chaotic map-based Diffie–Hellman problem.
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