Steganography
Steganography is the art of hiding information in plain sight, and in this tutorial, I'll show you how to use Steghide a very simple command line tool to do just that. In addition, I'll go over a bit of conceptual background to help you understand what's going on behind the scenes. This is a tool that's simple, configurable, and only takes a few seconds to hide information in many file types. What Is Steganography? Unlike encryption, where it's obvious that a message is being hidden, steganography hides data in plain view, inside a file such as a picture. As far as images are concerned, to anyone who isn't aware that it contains hidden data, it looks like just a normal, innocent picture. Steganography is useful in situations where sending encrypted messages might raise suspicion, such as in countries where free speech is suppressed. It's also frequently used as a digital watermark to find when images or audio files are stolen. And on a less practical note it's just cool.
Steganography
- 2. PRESENTED BY Presented To Teacher Name University Name Name 1 161-15-0000 Name 2 161-15-0001 Name 3 161-15-0002 Name 4 161-15-0003 Name 5 161-15-0004 Name 6 161-15-0005
- 3. WHAT IS STEGANOGRAPHY? Steganography is data hidden within data. Steganography is an encryption technique that can be used along with cryptography as an extra-secure method in which to protect data.
- 4. MAIN CONCEPT OF STEGANOGRAPHY Cover File (image, video or audio) Data to hide (text, image, video, audio, etc.) Stego Application Stego File
- 5. TYPES OF STEGANOGRAPHY Audio Steganography Video Steganography Text Steganography Image Steganography
- 10. Embedding Process Extracting ProcessStego Image TEXT/Massage Stego key TEXT/ Massage | | | SENDER RECEIVER IMAGE STEGANOGRAPHY
- 11. PROGRAM IMAGE FILES AUDIO FILES VIDEO FILES DOCUMENT FILES Openpuff BMP,JPG, PNG,TGA Mp3, WAV 3gp, Mp4, MPEG, VOB, SWF,FLV Pdf MP3Stego - Mp3 - - OpenStego BMP,PNG - - - S-Tools BMO,GIF Wav - - Steganographic Labratory (VLS) BMP,PNG, JPG,TIFF - - - PHP-Class Stream Steganography PNG - - - TOOLS FOR STEGANOGRAPHY
- 12. LSB METHOD ASCII Value for h in Decimal is 104 and Binary 01101000Before LSB Insertion of 8 consecutive bytes of an image: 10000010 10100110 11110101 10110101 10110011 10010111 10000100 10110001 After inserting h (01101000) in Least Significant Bits: 0 1 1 0 1 0 0 0 100000100 101001101 111101011 101101010 101100111 100101110 100001000 101100010
- 13. ADVANTAGES It is used in the way of hiding not the information but the password to reach that information. Difficult to detect. Only receiver can detect. Can be applied differently in digital image, audio and video file. It can be done faster with the large number of software's.
- 14. DISADVANTAGES Huge number of data, huge file size, so someone can suspect about it. If this technique is gone in the wrong hands like hackers, terrorist, criminals then this can be very much dangerous for all.
- 15. Steganalys is DETECTING THE SECRET MESSAGE
- 16. CONCLUSION Though Steganography is not implemented in wider ways but it can be the best security tool. The main problem of todays world is to secure their data confidentially, the techniques used currently are not considered the best which can only be replaced by Steganography.
- 17. ANY QUESTION ? ? ?