Combination of 3des with dct algorithm in message security

Abstract

In the digital era, communication through computer networks plays an important role. Through electronic communication, a person can make transactions or communication very quickly and practically. Sending data / messages from one place to another is much constrained by the issue of confidentiality. There are many ways you can hide data / messages that will be sent. First, using cryptographic techniques, namely by encoding data / messages using certain algorithms. Another technique is to insert a message that will be sent to other media, so that the message will be hidden and what will appear is other media used to insert messages.Here will be performed a Performance Analysis of the Combination of 3DES and DCT Algorithms in Securing Message Files into the Image.