Files
stegasoo/TODO-4.2.1.md
Aaron D. Lee 4e3acfca20 Add jpegtran lossless rotation and EXIF orientation handling
DCT steganography improvements:
- Add _apply_exif_orientation() to fix portrait photos encoding rotated
- Add _jpegtran_rotate() for lossless JPEG rotation preserving DCT data
- Add rotation fallback in extract_from_dct() - tries 0°, 90°, 180°, 270°
- Quick header validation to skip invalid rotations efficiently
- Fix: wrap debug.print in try/except to prevent extraction failures

Web UI rotate tool:
- Use jpegtran for JPEGs (lossless, preserves DCT steganography)
- Fall back to PIL for non-JPEGs
- Dynamic UI shows "DCT Safe" for JPEGs, warning for other formats

This enables the workflow: encode → compress → rotate → decode
Rotated stego JPEGs can now be decoded by trying all orientations.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
2026-01-11 16:36:52 -05:00

1.2 KiB

Stegasoo 4.2.1 Plan

Bugs

  • Fix EXIF viewer panel not loading metadata in Web UI
  • DCT mode: portrait photos export rotated 90° (EXIF orientation not handled)
    • Added _apply_exif_orientation() to apply EXIF rotation before embedding
  • DCT mode: add rotation fallback (try as-is, rotate 90°, retry on failure)
    • Added rotation fallback in extract_from_dct() with quick header validation
  • Rotate tool: use jpegtran for lossless JPEG rotation (preserves DCT stego!)
    • Web UI rotate tool now uses jpegtran for JPEGs
    • DCT decode rotation fallback now uses jpegtran for JPEGs
    • Dynamic UI shows "DCT Safe" for JPEGs, warning for other formats

Tools Audit

  • Web UI tools - full shakedown and fixes
  • CLI tools - full shakedown and fixes

AUR Packages

  • stegasoo-cli - standalone CLI package (no web dependencies)
  • stegasoo-api - REST API package (needs auth overhaul first)

API Auth Work (blocking stegasoo-api)

  • Implement OAuth2 authentication
  • TLS 1.3 support with self-signed certificates
  • Figure out cert trust/distribution for clients

API Documentation

  • Postman collection
  • Environment variable templates