Performance Analysis Of Blow Fish , Ideas And AES Encryption

NETWORK AND INTERNET APPLICATIONS ARE GROWING RAPIDLY IN THE RECENT PAST. THESE APPLICATIONS ARE USED BY THOUSAND OF USERS AND CONTROLLED BY DIFFERENT ADMINISTRATIVE ENTITIES. IT IS MEANS FOR COMMUNICATION, WITH THE RAPID GROWTH OF MAINLY USED AS AN EFFICIENT ENTERTAINMENT AND EDUCATION. INTERNET, THERE IS A NEED FOR PROTECTING CONFIDENTIAL DATA. THE INTERNET WAS HOWEVER ORIGINALLY DESIGNED FOR RESEARCH AND EDUCATIONAL PURPOSE, NOT FOR COMMERCIAL APPLICATIONS. SO INTERNET WAS NOT DESIGNED WITH SECURITY IN MIND. AS THE INTERNET GROWS THE EXISTING SECURITY FRAMEWORK WAS NOT ADEQUATE FOR MODERN DAY APPLICATIONS. CRYPTOGRAPHY PLAYS A VITAL ROLE IN THE FIELD OF NETWORK SECURITY. CURRENTLY MANY ENCRYPTION ALGORITHMS ARE AVAILABLE TO SECURE THE DATA BUT THESE ALGORITHMS CONSUME LOT OF COMPUTING RESOURCES SUCH AS BATTERY AND CPU TIME. THIS PAPER MAINLY FOCUSES ON THREE COMMONLY USED SYMMETRIC ENCRYPTION ALGORITHMS SUCH AS BLOWFISH, IDEA AND AES. THESE ALGORITHMS ARE COMPARED AND PERFORMANCE IS EVALUATED Associate Professor, Dept. of Information Technology Karpagam University, Coimbatore - 21. 121 Associate Professor and Head, Dept. of Information Technology Karpagam University, Coimbatore-21.