Lisa Fujii Cole, E. (2003). Hiding in Plain Sight: Steganography and the Art of Covert Communication. Indianapolis, Indiana: Wiley Publishing, Inc.

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Presentation transcript:

Lisa Fujii Cole, E. (2003). Hiding in Plain Sight: Steganography and the Art of Covert Communication. Indianapolis, Indiana: Wiley Publishing, Inc.

Overview  Introduction  Definitions  Digital Watermarking  Steganography  Future

What is Steganography? Steganography is hidden writing, whether it consists of invisible ink on paper or copyright information hidden in an audio file. Cole, E. (2003). Hiding in Plain Sight: Steganography and the Art of Covert Communication. Indianapolis, Indiana: Wiley Publishing, Inc.

History  Secrecy  Government  World War II Cole, E. (2003). Hiding in Plain Sight: Steganography and the Art of Covert Communication. Indianapolis, Indiana: Wiley Publishing, Inc.

What is Cryptography? Cryptography is the process or skill of communicating in or deciphering secret writings or ciphers.

Encryption/Decryption Encryption is the process of taking a plaintext message and converting it into ciphertext. Decryption is the process of converting data back into its original form. Cole, E. (2003). Hiding in Plain Sight: Steganography and the Art of Covert Communication. Indianapolis, Indiana: Wiley Publishing, Inc.

What’s the Difference? Steganography hides messages so their very existence is undetectable. Cryptography or “crypto” refers to the art of using various encryption and decryption methods to protect information. Cole, E. (2003). Hiding in Plain Sight: Steganography and the Art of Covert Communication. Indianapolis, Indiana: Wiley Publishing, Inc.

With an increasing amount of communication taking place electronically, digital methods for hiding information in pictures, sound files and text files have gained importance due to the serious implications it presents. Cole, E. (2003). Hiding in Plain Sight: Steganography and the Art of Covert Communication. Indianapolis, Indiana: Wiley Publishing, Inc. Importance

 Terrorism September 11, 2001  Virus Attacks Love Bug  Copyright Issues Napster Steganography & Technology

Digital Watermarking A visible or invisible watermark that is applied to a digital image such that ownership of the image is known.

Cole, E. (2003). Hiding in Plain Sight: Steganography and the Art of Covert Communication. Indianapolis, Indiana: Wiley Publishing, Inc. Visible Watermarks Watermark Cropped Invisible Watermarks Hidden Watermark

An image with no data hidden An image after data has been hidden with Invisible Secrets

Hidden Files

What’s the Difference? Digital Watermarking is concerned with hiding small amounts of data in many places across an image and doing it in a way that destroys the image if the data is removed. Other forms of steganography are concerned with hiding data entirely. Cole, E. (2003). Hiding in Plain Sight: Steganography and the Art of Covert Communication. Indianapolis, Indiana: Wiley Publishing, Inc.

Future  Legal Issues  Computer Forensics  Personal Net

Summary Combining the art of steganography with the powers of computers, networks, and the Internet have changed the world of communication.

Thank You Cole, E. (2003). Hiding in Plain Sight: Steganography and the Art of Covert Communication. Indianapolis, Indiana: Wiley Publishing, Inc. Return Home