Download or read book Secure and Efficient Use of Public Key Cryptography in Sensor Networks written by Ronghua Wang and published by . This book was released on 2007 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt: Public key operations were considered impractical for wireless sensor networks due to their high computational cost. However, public keys are important for many applications in sensor networks, such as data encryption/decryption, broadcast authentication, etc. With the rapid development of modern technology, public keys have become feasible for sensor networks, but they are still expensive to use on the sensor nodes. Compared with symmetric key operations, they need more time to process, and consume more energy. Therefore, it is imperative to pay special attention when we design security protocols in sensor networks, especially the ones that involve public keys.