1. Image Based Steganography Using LSB Insertion Technique
M. S. Sutaone & M.V. Khandare
International Conference on Wireless, Mobile and Multimedia Networks
11-12 January 2008, Mumbai, India
Reporter: 周美君
05/13/2008

2. Binary Document Images Authentication by Thinning Digital Patterns
Outline
Introduction
Paper’s Method
Experimental Work & Results
Conclusions
04/29/2008
Binary Document Images Authentication by Thinning Digital Patterns

3. Binary Document Images Authentication by Thinning Digital Patterns
Introduction
Least Significant Bit (LSB)
LSB Embedding
It is not easy to be detected by average human vision.
LSB 7 6 5 4 3 2 1
8 bits/pixel
04/29/2008
Binary Document Images Authentication by Thinning Digital Patterns

4. Example of LSB Embedding
‘G’: (ASCII)
the eight carrier bytes as follows:
04/29/2008
Binary Document Images Authentication by Thinning Digital Patterns

5. Binary Document Images Authentication by Thinning Digital Patterns
Paper’s Method
Sender Receiver
Key: digit value 0-7
Stego Key & Password
04/29/2008
Binary Document Images Authentication by Thinning Digital Patterns

6. Binary Document Images Authentication by Thinning Digital Patterns
04/29/2008
Binary Document Images Authentication by Thinning Digital Patterns

7. Experimental Work & Results
04/29/2008
Binary Document Images Authentication by Thinning Digital Patterns

8. Binary Document Images Authentication by Thinning Digital Patterns
Source File - data.txt (278 KB)
Original Cover File - plane.bmp (596 KB)
Key used
Password - omshanti
Stego Object KB3 (Same Size)
04/29/2008
Binary Document Images Authentication by Thinning Digital Patterns

9. Binary Document Images Authentication by Thinning Digital Patterns
Conclusions
Use “Stego Key” to embedded secret data randomly.
Problems of the paper:
The security of “Stego Key”
The issue of authentication
04/29/2008
Binary Document Images Authentication by Thinning Digital Patterns