Security for Wireless Sensor Networks using Identity-Based Cryptography introduces identity-based cryptographic schemes for wireless sensor networks. It starts with an exhaustive survey of the existing layered approach to WSN security--detailing its pros and cons. Next it examines new attack vectors that exploit the layered approach to security. After providing the necessary background the book presents a cross-layer design approach that addresses authentication integrity and encryption. It also examines new ID-based key management mechanisms using a cross-layer design perspective. In addition secure routing algorithms using ID-based cryptography are also discussed. Supplying readers with the required foundation in elliptic curve cryptography and identity-based cryptography the authors consider new ID-based security solutions to overcome cross layer attacks in WSN. Examining the latest implementations of ID-based cryptography on sensors the book combines cross-layer design principles along with identity-based cryptography to provide you with a new set of security solutions that can boost storage computation and energy efficiency in your wireless sensor networks.