About SteganoMessages

Learn about our secure steganography platform and how we protect your hidden communications.

What is Steganography?

Steganography is the practice of concealing information within another medium. Unlike cryptography, which scrambles data, steganography hides the very existence of the secret message. Our platform uses DCT (Discrete Cosine Transform) steganography to embed messages within images.

DCT steganography works by modifying the frequency domain coefficients of 8x8 image blocks, specifically targeting mid-frequency coefficients for optimal imperceptibility and robustness. This approach provides superior resistance to compression and image processing compared to traditional spatial domain methods.

How Our Platform Works

Message Embedding

  1. 1 Upload your cover image (PNG, JPG, BMP, TIFF)
  2. 2 Enter your secret message (up to image capacity)
  3. 3 Choose visibility and security settings
  4. 4 Download your steganographic image

Message Extraction

  1. 1 Upload an image containing a hidden message
  2. 2 Our system analyzes the image using DCT frequency domain
  3. 3 The hidden message is reconstructed from DCT coefficients
  4. 4 View and copy your extracted message

Security & Privacy

Password Protection

Optional password protection for shared messages using BCrypt encryption

Secure Processing

All image processing happens server-side with temporary file cleanup

Message Expiration

Set expiration dates for automatic message and file cleanup

Account Security

Email verification, secure authentication, and session management

Technical Specifications

Supported Formats

  • • JPEG/JPG
  • • PNG
  • • BMP
  • • TIFF

File Limits

  • • Max file size: 50MB
  • • Message length: Depends on image size
  • • UTF-8 character encoding
  • • Automatic capacity calculation

Technology Stack

  • • Spring Boot 3.x
  • • Java BufferedImage API
  • • DCT Steganography
  • • HTMX for interactivity

Common Use Cases

Personal

  • • Private messaging
  • • Digital watermarking
  • • Copyright protection
  • • Secret sharing with friends

Professional

  • • Confidential communications
  • • Data integrity verification
  • • Digital forensics research
  • • Educational demonstrations