Selective Encryption Algorithm for Wireless Ad-hoc Networks

Security is one of the most challenging aspects in the internet and network applications. Symmetric key algorithms are a typically efficient and fast cryptosystem, so it has significant applications in many realms. For a wireless ad hoc network with constraint computational resources, the cryptosystem based on symmetric key algorithms is extremely suitable for such an agile and dynamic environment, along with other security strategies. We introduce the concept of selective encryption into the design of data protection mechanisms. Utilizing probabilistic methodology and stochastic algorithm, a sender includes proper uncertainty in the process of message encryption, so that only entrusted receiver can decrypt the ciphertext and other unauthorized nodes have no knowledge of the transmitted messages on the