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ENCRYPTING A BLOCK USING PARVALAY ALGORITHM

Nowadays, the computer network has changed the mode of people's communication. People can easily transfer the various information through the network. However, because of the openness of the network, people have to take more and more attention on security and confidentiality of information. Data encryption is widely use to ensure security of the data. So encryption implies a way or procedure to hide some secrets by either applying some mathematical or logical functions to a plain text to produce a text that will be difficult for some outsider to decrypt. Here we introduced a new algorithm based on symmetric key block encryption technique. In this algorithm encryption is done on binary file. Since this encryption is done on binary file so this algorithm is applicable for any data such as text as well as multimedia data.