Authenticated Encryption for Wireless Sensor Network

Abstract

Wireless Sensor Networks (WSNs) are becoming popular day by day. Security issues on WSN thus draw much attention.To receive trusted information from these sensor nodes they have to send authenticated messages. Encryption is alone not enough to ensure the confidentiality, authenticity and integrity of communicated data. AES encryption algorithm is adopted by many WSN standards such as IEEE 802.15.4 and IEEE 802.15.6. AES algorithm which provides data encryption, also provides additional security services such as data authentication, integrity when it is combined with appropriate functionality.In this paper we have discussed different modes of operation of block ciphers which gives authenticated encryption. AES-CCM (Advanced Encryption Standard –Counter Mode with Cipher Block Chaining Mode) is a security standard that gives highest level of security. Software implementation of the algorithm is done in java and the obtained results show that it is a good solution for wireless sensor network Security.