Paper Title
An Implementation Of Hop By Hop Message Authentication In Wireless Sensor Network

Abstract
The main aim of the authentication is the data integrity and the confidentiality. Authentication is the process which assures the user that the message is coming from the trusted user. But now a days there are various methods for authentication such as Message Authentication Code, Signcryption, Key Aggregate System are emerged very rapidly for better security precaution. This paper shows the hop by hop message authentication in wireless environment. As Wireless sensor networks are the point of attention of numerous researchers regarding the security issue in the past several years. This message authentication scheme is efficient and reliable for the data transfer over the network. There were various methods have been developed to solve the problem such as symmetric key cryptography and public key cryptography. Each would have their own problems such as threshold overhead and key management and computation overhead and scalability .This new authentication scheme based on the Elgamal signature. This system can allow the intermediate node authentication in secure way. In this scheme any node can transmit n number of message without threshold problem .This system is intended to provide the authenticate transfer of the message from the source to destination. Keyword- Elgamal, symmetric key, public key, hop by hop message authentication.