Whitespace Steganography

Whitespace Steganography:

• Hides messages using different types of spaces
• Uses normal spaces (ASCII 32) for 0 bits
• Uses tabs (ASCII 9) for 1 bits
• Completely invisible to casual readers
• Preserves text readability

Encoding Method:

• Converts message to binary (8 bits per character)
• Finds existing spaces in text
• Replaces space+space with space+tab for 1 bits
• Leaves space+space unchanged for 0 bits

Detection Methods:

• Visual inspection of whitespace patterns
• Text analysis tools showing tab characters
• Statistical analysis of space usage
• Automated steganalysis tools

Capacity:

• Limited by number of spaces in text
• Each space can encode 1 bit
• 100 spaces = 12.5 characters
• Best for short messages

Advantages:

• Completely invisible to humans
• Preserves text formatting
• No special characters needed
• Works with plain text files

Limitations:

• Limited capacity
• Requires spaces in original text
• Detectable by analysis tools
• May be altered by text editors

Use Cases:

• Covert communication in documents
• Hidden messages in emails
• Watermarking text content
• Educational steganography demonstrations