This is the final presentation for project named "Audio Steganography" for btech final year computer science students, and without the screenshots of the progress this can b used as a synopsis presentation.

1. 1
A
Project Presentation on
Secure Transmission of Information using
Audio Steganography
Submitted in partial fulfillment of award of
BACHELOR OF TECHNOLOGY
Degree
In
COMPUTER SCIENCE & ENGINEERING
By
KUMAR KARTIKEYA UPADHYAY
KM. NEHA RANI
MANVI GUPTA
RAJU RAJPUT
2011-2015
GUIDE
SURYA PRAKASH SHARMA
ASSISTANT PROFFESOR
NOIDA INSTITUTE OF ENGINEERING &
TECHNOLOGY, GREATER NOIDA(U.P.)

2. Requirements
HARDWARE
 Intel Core i3 CPU@
2.40 Ghz
 RAM: 2 GB
SOFTWARE
 Matlab 8.1.0.604
 OS-Windows
Microsoft
2

3. Introduction
 Secure Transmission
 It refers to the transfer of data such as
confidential information.
 TLS and SSL are cryptographic protocols that
provide secure communication on the internet.
3

4. Steganography
The process of hiding the messages so that the presence of
message itself is hidden , often by writing them in places
where they may not be found.
Select Host
audio
Secret bits
(message)
Secret
message
Preprocessin
g
System
Extract secret
bits from
coefficient
Embedding
bits by location
selection
Select
location in
each
coefficient
Network
4

5. EXAMPLE
Since everybody can read, encoding
text, in natural sentences in doubtfully
effective.
Since Everybody Can Read, Encoding
Text, In Natural Sentences In Doubtfully
Effective.
‘SECRET INSIDE’
5

6. Audio Steganography
 Embedding secret message into
digital sound is called audio
steganography.
 Audio Steganography is presented
where the bits of a secret message
are embedded into the coefficients of
a cover audio.
6

7. Modules
 Take an audio input from the user.
 Convert audio bits into binary format.
 Embed the secret message with binary bits
using MSB.
 Decode the message with the same
procedure as applied in embedding.
 Now original message can be viewed by
the receiver.
7

8. 
8
SECRET
MESSAG
E
AUDIO
FILE
STEGANOGRAPHI
C SYSTEM
STEGNO
FILE:
SECRET
MESSAGE
+ AUDIO
FILE
0 LEVEL DFD

9. LEVEL 1 DFD

9
SECRET
MESSAGE
STEGANOGRAPHI
C
ENCRYPTION
PROCESS
STEGNO
FILE:
SECRET
MESSAGE +
CARRIER
FILE
CARRIER FILE
COMPRESSIO
N PROCESS
DECOMPRESSI
ON PROCESS
DECRYPTION
SECRET FILE
EMBEDDED
STEGO FILE
ENCRYPTED
SECRET MSG

10. 10
Select cover audio file in
wav format
Select file to embed(text &
image )
Embedding starts
Stego audio
E
M
B
E
D
D
I
N
G

11. 11
R
E
T
R
I
E
V
I
N
G
Select Stego Audio
Retrieve Secret
Message
Secret Message

12. GUI of Embedding Process
12

13. Select Cover Audio file
13

14. Histogram of Cover Audio
14

15. Select Secret message Browse file to embed
15

16. Embedding Starts….
16

17. Save Embedded Audio
17

18. Histogram of Stego Audio
18

19. GUI of Retrieving Process
19

20. Browse Stego file
20

21. Retrieving Starts…..
21

22. Save Retrieved Message
22

23. Advantages
 Avoiding communication in well-known
forms greatly reduces the risk of
information being leaked in transit.
 It can also enhance individual privacy.
23

24. Applications
 Usage in modern printers
 Defense Applications
 Confidential communication and secret
data storing
 Media Database systems
 Protection of data alteration.
24

25. FUTURE SCOPE
25

26. CONCLUSION
 Hiding information may introduce enough
visible noise to raise suspicion. Therefore the
carrier or cover audio must be carefully
selected.
 This proposed system is to provide a good,
efficient method for hiding the data from
hackers and sent to the destination in a safe
manner.
 This proposed system will not change the
size of the file even after encoding and also
suitable for any type of audio file format.
 Encryption and Decryption techniques have
been used to make the security system
robust. 26

27. 27