An Adaptive Security Scheme for Wireless Sensor Networks

Message Authentication is a short piece of the information used authenticate a message to provide integrity and authenticity assurance on message. Integrity assurance detects accidental and intentional message changes while authenticity assurance affirms the message's origin. It is one of the effective ways prevent unauthorized and computed messages from being forwarded in wireless sensor networks (WSN). For this reason, Symmetric-key or public-key crypsystem have been developed. However, it has some limitations, like lack of scalability and node compromise attacks. Polynomial-based scheme was introduced to address these issues. This scheme and its extensions also have a thickness of a built-in threshold problem. When the number of messages transmitted is larger than the threshold. While enabling intermediate node authentication, scalable authentication scheme of the elliptic curve cryptography that allows any node transmit an unlimited number of messages without suffering the threshold problem. Proposed scheme is give the strong source privacy and security while improve the sending packet ratio speed and Packet Arrivaling Performance by using Doomsday Algorithm.