EMBEDDING THE SECURE DATA IN AN AUDIO/VIDEO AND
IMAGE 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 suspension among the
viewers so in this project to avoid such suspension, the data is embedded into a
picture and this innocent looking picture 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.
Given the proliferation of digital images, especially on the Internet, and given the
large amount of redundant bits present in the digital representation of an image,
images are the most popular cover objects for embedding data.
Proposed System:
In the proposed system we can overcome the difficulties of the existing system. In
our system we are introducing all the three concept 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/video or image files.
For encrypting and decrypting the data/information we have used DES algorithm.
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Hiding the text or file inside least significant of an image. 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.
Modules:
1. Hiding Test in image
a. Compression
b. Encryption
2. Decryption
a. Decrypting
Encryption Module:
In this module we can hide the text in side the image using least significant bit
algorithm. Before that user has to encrypt the message using DES algorithm.
And then he can compress it.
Decryption Module:
In this module user will take care of reading the hidden message from Image and
that message can be decrypted.
System Environment:
Hardware Requirements:
Hard disk
: 40 GB
RAM
: 512 MB
Processor Speed
: 3.00GHz
Processor
: Pentium IV Processor
Software Requirements:
JDK 1.5 and more
Java Swing – front end
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