Steganography Tutorial | How To Hide Text Inside The Image | Cybersecurity Training | Edureka
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** Cyber Security Course: https://www.edureka.co/cybersecurity-certification-training ** This Steganography Tutorial by Edureka will help you understand how to hide data from plain sight using various techniques and tools. Below is the list of topics covered in this session: 1. What is Steganography? 2. History of Steganography 3. Basic Steganographic Model 4. LSB Steganography 5. Demo: LSB Steganography 6. Demo: Steganographic Tools Cyber Security Playlist: https://bit.ly/2N2jlNN Cyber Security Blog Series: https://bit.ly/2AuULkP Instagram: https://www.instagram.com/edureka_lea... Facebook: https://www.facebook.com/edurekaIN/ Twitter: https://twitter.com/edurekain LinkedIn: https://www.linkedin.com/company/edureka
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Steganography Tutorial | How To Hide Text Inside The Image | Cybersecurity Training | Edureka
- 2. Cybersecurity Certification Training www.edureka.co/cybersecurity-certification-training Agenda 01 What is Steganography? 02 History of Steganography 03 Basic Steganographic Model 04 LSB Steganography - Demo 05 Steganography Tools
- 3. Copyright © 2018, edureka and/or its affiliates. All rights reserved. What is Steganography?
- 4. Cybersecurity Certification Training www.edureka.co/cybersecurity-certification-training What is Steganography? Data is hidden in the plain sight
- 5. Cybersecurity Certification Training www.edureka.co/cybersecurity-certification-training What is Steganography? Cryptography Board meeting is happening on Tuesday. We are meeting at 40.7127 S, 74.0059 E Uksb klsmnc ou fghmhnvb gh sdeygdh. eu sfhd vbsnmrig st lolmnar K, dgfhal V Board meeting is happening on Tuesday. We are meeting at 40.7127 S, 74.0059 E Sender Receiver
- 6. Cybersecurity Certification Training www.edureka.co/cybersecurity-certification-training What is Steganography? Cryptography Sender ReceiverIntruder understands that secret message is being sent Uksb klsmnc ou fghmhnvb gh sdeygdh
- 7. Cybersecurity Certification Training www.edureka.co/cybersecurity-certification-training What is Steganography? Steganography is the art and science of embedding secret messages in cover message in such a way that no one, apart from the sender and intended recipient, suspects the existence of the message Sender ReceiverIntruder will not get to know of the existence of secret message
- 8. Copyright © 2018, edureka and/or its affiliates. All rights reserved. History of Steganography
- 9. Cybersecurity Certification Training www.edureka.co/cybersecurity-certification-training Steganographic Tecniques Steganography STEGANOS GRAPHEN Concealed or Hidden Drawing or Writing Null CipherWax Tablet Invisible Ink Microdots Semagrams 20191800
- 10. Cybersecurity Certification Training www.edureka.co/cybersecurity-certification-training Steganography Types Text Steganography Image Steganography Audio Steganography Email Steganography Network Steganography Video Steganography
- 11. Cybersecurity Certification Training www.edureka.co/cybersecurity-certification-training Characteristics of Steganographic Techniques Transparency Robustness Tamper Resistance Original Image Stego Image
- 12. Copyright © 2018, edureka and/or its affiliates. All rights reserved. Basic Steganographic Model
- 13. Cybersecurity Certification Training www.edureka.co/cybersecurity-certification-training Basic Steganographic Model Cover File(X) Steganographic Encoder f(X,M,K) Secret Message(M) Secret Message(M) Stego Object Key(K) Steganographic Decoder Communication Channel Stego Object
- 14. Cybersecurity Certification Training www.edureka.co/cybersecurity-certification-training Steganographic Model: With Encryption Encryption Algorithm Steganographic Encoder Decryption Algorithm Communication Channel Steganographic Decoder Message Key RECEIVER Message Cypher Text Cypher Text Key Stego Key Stego Key Cover File Stego Object Stego Object SENDER
- 15. Copyright © 2018, edureka and/or its affiliates. All rights reserved. LSB Steganography
- 16. Cybersecurity Certification Training www.edureka.co/cybersecurity-certification-training Pixels & Bits Pixel R G B 1 0 1 1 0 1 1 1 1 1 0 1 1 0 0 1 1 0 1 0 0 1 0 0 Total: 24 Bits
- 17. Cybersecurity Certification Training www.edureka.co/cybersecurity-certification-training Least Significance Bit Steganography 1 1 1 1 1 1 1 1 Most Significant Bit(MSB) Least Significant Bit(LSB) Value: 255 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 255 127 255 254 If we change MSB, it will have larger impact on final value. If we change LSB, the impact on final value is very less Change in bytes is 99.99999% Change in bytes is 0.000002%
- 18. Cybersecurity Certification Training www.edureka.co/cybersecurity-certification-training Least Significant Bit Steganography 1 0 0 0 0 0 1Secret message to hidden: Letter ‘A’ Pixels before insertion(3 pixels) Least Significant Bit Steganography(LSBS) involves overwriting the bit with the lowest arithmetic value Pixels after insertion 10000000 10100100 10110101 10110101 11110011 10110111 11100111 10110011 00110011 10000001 10100100 10110100 10110100 11110010 10110110 11100110 10110011 00110011
- 19. Copyright © 2018, edureka and/or its affiliates. All rights reserved. Demo
- 20. Cybersecurity Certification Training www.edureka.co/cybersecurity-certification-training Least Significant Bit Steganography - Demo 1 Loads an image and looks at each pixels in hexadecimal value. 2 Converts secret text into bits and stores them in LSB of pixel bits 3 A delimiter is added to the end of the edited pixel values 4 To encode the text into image To decode the text from image While retrieving all the 0’s and 1’s extracted until delimiter is found. Extracted bits are converted into string(secret message)
- 21. Copyright © 2018, edureka and/or its affiliates. All rights reserved. Steganography Tools
- 22. Cybersecurity Certification Training www.edureka.co/cybersecurity-certification-training Steganographic Tools Tool Description Stegosuite Hide text inside any image Stegohide Hide secret file in image or audio file. Xiao Steganography Free software that can be used to hide secret files in BMP images or in WAV files. SSuite Picsel Portable application to hide text inside image file OpenPuff Tool to conceal files in image, audio & flash files Camouflage Tool that lets you hide any type of file inside of file.
- 23. Cybersecurity Certification Training www.edureka.co/cybersecurity-certification-training