Vaishali M.Sawale et al, International Journal of Computer Science and Mobile Computing, Vol.3 Issue.3, March- 2014, pg. 453-457 © 2014, IJCSMC All Rights Reserved 453 Available Online at www.ijcsmc.com International Journal of Computer Science and Mobile Computing A Monthly Journal of Computer Science and Information Technology ISSN 2320–088X IJCSMC, Vol. 3, Issue. 3, March 2014, pg.453 – 457 RESEARCH ARTICLE Enhanced Data Transmission for Cluster-Based Wireless Sensor Networks Miss. Vaishali M.Sawale 1 , Prof. Arvind.S.Kapse 2 ¹CSE Department, PRPCE, Amravati University, India 2 CSE Department, PRPCE, Amravati University, India 1 vsawale84@gmail.com; 2 arvindkapse@gmail.com Abstract- Nowadays, with the rapid increase of Wireless sensor Network enabled many devices and the more wide spread use of Wireless Sensor Network. WIRELESS sensor network (WSN) is a network system comprised the distributed devices using wireless sensor nodes to guide physical or environmental conditions, such as sound, temperature, and motion .Secure data transmission is a critical issue for wireless sensor networks (WSNs). Clustering is an effective and practical way to enhance the system performance of WSNs. Sensor used for these purposes needs to be deployed very slowly and in a random fashion Clustering is a technique employed to increase the various capabilities of a sensor network. We propose two secure and efficient data transmission (SET) protocols for clustered Wireless sensor Network CWSNs, called SET-IBS by using the identity-based digital signature (IBS) scheme and SET-IBOOS by using identity-based online/offline digital signature (IBOOS) scheme. This application facilitate to facilitate require packet Delivery from one or more senders to multiple receivers, provisioning security in group communications is pointed out as a critical and challenging goal In this paper, we study a secure data transmission for cluster-based Wireless Sensor Network (CWSNs).The results show that the proposed protocols have more performance than the existing secure protocols for CWSNs, in terms of security overhead and energy consumption. Keyword- Secure data transmission protocol; Cluster-based WSNs; Wireless Sensor Networks; Identity-based digital signature; Identity-based online/offline digital signature I. INTRODUCTION One of fundamental goals for Wireless Sensor Networks (WSNs) is to collect information from the physical world. Although a number of proposals have been reported concerning security in WSNs, provisioning security remains hypercritical and demanding task. WSNs have attracted much attention due to its great potential to be used in various applications. Sensor Network Wireless is widely considered as one of the most important technologies for the twenty-first century. The rapid evolution of wireless technologies and the significant growth of wireless network services have made wireless communications an ubiquitous means for transporting information across many different domains. The sensing electronics