Packet hiding using cryptography with advanced key management against counter jamming attacks in wireless sensor networks

In a wireless network, when the adversary is being part of the network, they are well known about the protocol being used and other network secrets. A transceiver is enough to get the key and decrypt the message. Hence, simple cryptographic mechanism is not enough to protect the message. Moreover, jamming can be easily performed by modifying the packet header. Hence we have to go for advanced mechanism to protect our message. At the message level permutation and padding are used to protect the message and at the communication level puzzle is used to hide the key. A puzzle solver module in the client system can solve the puzzle and get the key.