Unit 1 Steganography

8 lecture hours

• Methods for hiding (text
• speech etc.)
• Issues: Security
• Capacity and Imperceptibility
• Steganalysis: Active and Malicious Attackers
• Active and passive steganalysis

Unit 2 Frameworks for secret communication (pure Steganography, secret key, public

• key steganography)
• Steganography algorithms (adaptive and non-adaptive)

Unit 3 Steganography techniques

9 lecture hours

• Substitution systems
• Spatial Domain
• Transform domain techniques
• Spread spectrum
• Statistical steganography
• Cover Generation and cover selection
• Tools: EzStego
• Hide 4 PGP, Hide and Seek
• S Tools etc.)

Unit 4 Detection, Distortion, Techniques

• LSB Embedding
• LSB Steganalysis using primary sets
• Texture based 6 12%

Unit 5 Digital Watermarking

12 lecture hours

• Difference between Watermarking and Steganography
• Classification (Characteristics and Applications)
• Types and techniques (Spatial-domain
• Frequency-domain, and Vector quantization based watermarking)
• Attacks and Tools (Attacks by Filtering
• Geometric Compression
• Linear Compression etc.)
• Watermark security & authentication

Unit 6 Recent trends in Steganography and digital watermarking techniques. Case study of

• LSB Embedding
• LSB Steganalysis using primary sets. 5 10%