Audio Steganography Three main ways to encode Least significant bit Phase coding Replace phase of segment with reference phase Spread Spectrum encoding Encode the message across all frequencies Observations: Message is likely to be lost if resampled. Message is likely to be lost if converted to/from digital form. MP3 and WAV files are most widely supported.
Copyright 2003, Bri Hatch of Onsight, Inc.
Presented at SecureWorld Expo, 2003.
Presentation created using vim and MagicPoint.