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EMBEDDING THE SECURE DATA IN AUDIO FILES
Objective
The purpose of our project is to enable the development of hiding the data and to encrypt the data using cryptography. Steganography is the science of hiding information and the goal of steganography is to hide the data from a third party where as the goal of cryptography is to make data unreadable by a third party.
But simply encrypting the data and transmitting it will cause suspicion among the viewers so in this project to avoid such suspicion, the data is embedded into an audio file and this file is transmitted .
Existing System
Almost all digital file formats can be used for embedding data, but the formats that are more suitable are those with a high degree of redundancy. Redundancy can be defined as the bits of an object that provide accuracy far greater than necessary for the object’s use and display. Hiding information in text is historically the most important method of embedding data. An obvious method was to hide a secret message in every nth letter of every word of a text message.
It is only since the beginning of the Internet and all the different digital file formats that is decreased in importance. Text embedding data using digital files is not used very often since text files have a very small amount of redundant data.
In the proposed system we can overcome the difficulties of the existing system. In our system we are introducing three concepts to secure the information which is send by the user. The data/information which the sender wants to send will be encrypted and then if the information is too bigger in size there is an option to compress the data using compression technique and later that data/information is embedded in the audio files.
For encrypting and decrypting the data/information we have used DES algorithm.
By using this intruder could not be able to see the content since there is no change will be seen compare to original images.
DES algorithm is used to encrypt the message which is hided in the image.
DES is used to give the extra protection for a data which has to be hide.
Compression technology has been used to compress the size of the message in order to save memory.