This document discusses using steganography for secret communication in defense systems. Steganography hides the existence of secret messages within cover work like images or audio so that a third party cannot detect the presence of hidden information. The document outlines digital information hiding and extraction models, advantages of using steganography with digital signals for military applications, and disadvantages like potential cost. The conclusion states the goal is to embed text into audio as a form of steganography to securely transmit data to destinations.

1. Secret Communication Through Image and
Audio For Defense

2. Abstract
• Steganography is an art of sending hidden data or secret messages
over a public channel so that a third party cannot detect the presence
of the secret messages.
• Steganography is about hiding the very existence of the secret
message.
• Main objective of this project is to use the Steganography for secret
communication in defense systems.

3. Encryption key,
other keys
Cover
work
Informati
on to
hide
Embedding
algorithm
Stego
Work
Digital Information Hiding Model
(Text message,
audio,image)
(Image,audio)(Image,audio)

4. Encryption key,
perhaps
original cover media,
other keys
Stego
work
Extraction algorithm Extracted
message
Digital Information Extraction Model
(Text
message,
audio,Image)
(Image,audio)

5. Advantages:
• HAS and HVS can not detect the small changes in audio and image.
• Less noise due to usage of digital signals.
• Can be used in military applications.
Disadvantages:
• Expensive .
• Used in anti-social activities.

6. Conclusion:
• The main goal of this Project work is embed text into audio as a case
of steganography.
• This system is to provide a good, efficient method for hiding the data
from hackers and sent to the destination in a safe manner.