In the field of wireless sensor network, it is a very emerging technology based area of and very popular for research because it is very useful in many areas such as health sector, military application and other commercial application i.e. it addresses the many problems which is not handled by human being easily. Wireless sensor nodes have limited storage capacity and processing signal power to complete their task. Because it is small and cheap, it can be deployed easily in a hostile and unattended environment. There are so many attacks on wireless sensor network, in wireless networks due to its open nature it leaves vulnerable to the intentional interference attacks, called them as jamming. This can be used for mounting Denial-of-Service attacks in wireless network. Typically jamming has been addressed under external threat model in this addressing problem of jamming attacks in wireless network and considering adversaries is active for only short period of time, selectively targeting messages of high importance. For prevention of these attacks we are implementing three schemes that prevent real time packet classification by combining cryptographic primitives with physical layer and also strong hiding commitment schemes and cryptographic puzzle hiding schemes.