Data Hiding and Encryption in Images using Steganography Techniques

Desklib provides past papers and solved assignments for students. This project explores data hiding in encrypted images using steganography.

“Data hiding in encrypted image
using steganography approach”

Table of Contents
• Introduction
• Description
• Input
• Output
• Methodology
• Programming Language
• Literature Review
• Implementation
• Conclusion
• References

Introduction
• Project Description
• Inputs used
• Generated Outputs
• Methodological Approach
• Technology
• Project Implementation

Description
• ‘Steganography’ – An art of secret information hiding
• Combination of encryption and protection
• Hiding data behind other file format
• Hiding data behind images
• Hiding data behind multi media files like audio or video
• Cryptography
• Cyber Security

Input
• Secret data to be made hidden
• Text file
• Image file
• Stego key

Output
• Altered original image
• Stegano image

Methodology
MD5
Algorithm of message-digest
Cryptographic function of one way processing
Takes input of undefined length
Returns output of fixed length
128 bit output
Uses message authentication code of Cryptography

SHA
Secure Hash Algorithm 1
Takes input having the of less than 264 bits
Forms message digest of 160 bit
Generates output of 256 bits

Programming Language
• ‘Python’- Best for cyber security
• High performance
• High productivity
• High processing speed
• Extensive support for libraries

Literature Review

Reversible Data Hiding
• Method of recovering original image without deformation of
marked image.
• Implementation method after the extraction of hidden data.
• Embedding data in image by slight modification in the pixel
values of image.
• Large amount of data can be embedded, as compared to other
data hiding algorithms.
• Applicable in all kinds of images like text images, medical
images, aerial images, etc.

Least Significant bit algorithm
for data hiding
• Process of hiding message in each pixel byte by choosing least
significant bit.
• Best for images having the value of 8 bit for each pixel of
image (Greyscale image).
• Encrypting data before hiding data.
• Method of hiding text in other text, image, audio, or video.