- RSA key size capped at 3072 bits (4096 too large for QR codes)
- Added zstd compression for QR code RSA keys (better ratio than zlib)
- New prefix STEGASOO-ZS: for zstd, backward compatible with STEGASOO-Z: (zlib)
- Added zstandard dependency to web/api/compression extras
- Updated all docs, CLI options, and web UI to reflect 3072 max
- Version bump to 4.2.0
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- Update TEMP_FILE_EXPIRY constant (300 -> 600 seconds)
- Update all UI references to the new 10 minute expiry
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- Add grid icon to LSB button to match DCT soundwave icon
- Add divider between mode and output options (hidden on mobile)
- Wraps cleanly on small screens
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Shows ABCD-••••-3456 instead of ABCD...3456 to indicate
the key is longer and has been redacted.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Convert DCT/LSB (encode) and Auto/LSB/DCT (decode) to use
Bootstrap btn-group style matching Color/Gray and JPEG/PNG.
Better mobile layout - all options on one line.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Display ABCD...3456 instead of full masked fingerprint.
Full fingerprint still visible in tooltip on hover.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- Remove duplicate qr-crop-container styles from encode/decode templates
- Use only qr-scan-container from style.css (flex centering + object-fit)
- Fix rsaQrSection to use align-items: center for horizontal centering
- Darken channel key fingerprint in header (#f0c674 → #c9a860)
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Reduced saturation (10→2), hue-rotate (15→5), brightness (1.5→1.2)
for a subtler gold that matches the toned-down color scheme.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- Toned down gold colors for better cross-monitor consistency
- Header gold: #fee862 → #e5d058
- Form labels: #ffe699 → #d9c580
- Removed text-shadow/outline from form labels (was smudgy)
- Removed background from nav floating labels
- More subtle nav hover background (halved opacity)
- Gold chevron on all dropdown selects for clarity
- Removed (environment) tag from channel key display
- Simplified channel key config text in about page
- Generate page: icon-only button for channel key
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Removed gold outline/stroke from default state - too harsh on
some monitors. Now simple white icons that turn gold on hover
like the header nav, with lift effect and drop shadow.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- Tagline: smaller font, drop shadow, 3px offset, 3px left padding
- Icons: reduced gap from gap-5 to gap-4
- Channel badge tooltips: descriptive hover text for private/public
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Homepage:
- Minimal floating icons with gold hover effect
- Larger Stegasoo title (display-5)
- v4.1 badge repositioned to bottom-left of logo
- Tighter 8px gap between logo and title
Navbar:
- Container-fluid for fixed left positioning
- Reduced left padding, proper logo/badge spacing
- Channel fingerprint in gold, shield icon brighter
Tools page:
- Consistent font styling (0.62rem, weight 500, 1px spacing)
- Wider buttons (64px) with more gap
- Bolder text on hover (weight 600)
Typography consistency across nav, homepage, and tools.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Added dark outline via text-shadow and increased drop-shadow
opacity to make white icons stand out against dark background.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Icons and labels turn gold on hover, matching the tools page
button styling. Combined with lift effect for visual pop.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Removed colored icons per user preference. Now using clean white
icons with subtle drop shadow that lifts and deepens on hover for
a "pop" visual cue without glow.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Admin System Settings page:
- New /admin/settings route with channel key config
- QR code export with tiled print sheet (4x5 on US Letter)
- Server config display (HTTPS, port, auth, DCT/QR status)
- Environment info (version, Python, platform, KDF)
Navigation improvements:
- Icon-only nav with floating labels on hover
- Gold labels slide down below icons
- Gradient pill background on hover
Air-gap ready:
- All vendor libs now local (Bootstrap CSS/JS, Icons, html5-qrcode)
- QRious library for QR generation
- No external CDN dependencies
Other changes:
- Moved About link from nav to footer
- Channel QR export moved from about.html to admin/settings.html
- Print sheet button for QR codes (tiled US Letter output)
- Dev runner script (dev_run.sh) with r/q hotkeys
- Fixed navbar dropdown z-index
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Encode/Decode UI:
- New accordion layout with 3 steps (encode) / 2 steps (decode)
- Gold step numbers with checkmarks on completion
- Dynamic right-aligned summaries as fields are filled
- Subtle gradient highlight on active accordion step
Webcam QR Scanning:
- Camera button for RSA key QR codes on encode/decode pages
- Camera button for channel key scanning
- 3-2-1 countdown capture for dense QR codes
- Proper scanner stop/restart on retry
- Backend decompression for STEGASOO-Z: compressed keys
RSA Key Print:
- Removed identifying text from QR print output
- Now prints plain QR code for discretion
Pi Image Script:
- Fixed 16GB resize to detect expand vs shrink
- Fresh images now properly EXPAND to 16GB
- Already-expanded images properly SHRINK to 16GB
UI Polish:
- Removed PIN helper text for compactness
- Fixed QR drop zone centering
- Fixed decode page element IDs for JS
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
QR Channel Key Sharing:
- Admin-only QR generator in about.html (was visible to all)
- QR button for saved keys on account page
- Fixed about() route missing channel status vars (bug)
Pi Build Optimization:
- Pre-built venv tarball support (39MB zstd, skips 20+ min compile)
- setup.sh auto-detects and extracts tarball if present
- Strip __pycache__/tests before tarball (295MB → 208MB)
Flash Script Improvements:
- flash-image.sh now uses config.json for headless WiFi setup
- Consistent wipe prompt on both flash scripts
- pull-image.sh re-enables auto-expand before shrinking
Build Docs:
- Added zstd and jq to pre-setup apt-get
- Documented fast build option with pre-built venv
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- Fix .dockerignore to exclude *.img.xz files (was 2.3GB context)
- Remove deprecated 'version' attribute from docker-compose.yml
- Increase container memory limits to 2GB/1GB (prevent OOM on DCT)
- Add loading spinner to decode button during form submission
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
About page:
- Version history now shows v4.1.2 prominently with accordion for older versions
- Shortened 'Error Correction Reed-Solomon' to 'DCT ECC / RS Code'
- Removed v4.1 badges from established features
API fixes:
- Export MAX_FILE_PAYLOAD_SIZE from constants
- Export calculate_capacity_by_mode from steganography
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- Show 6 key specs prominently as cards (Payload, Carrier, DCT/LSB capacity, Encryption, Error Correction)
- Add Reed-Solomon error correction info with v4.1 badge
- Move secondary specs to collapsible accordion
- Add reedsolo to "Built with" list
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- setup.sh: Add btop to apt install for temp monitoring
- first-boot-wizard: Add Step 4 for overclock configuration
- Detects Pi 4/5 model
- Asks about active cooling
- Offers appropriate overclock settings (2.0GHz Pi4, 2.8GHz Pi5)
- Prompts for restart if enabled
- decode.html: Make message box click-to-copy, remove separate button
- Shows "(click to copy)" hint
- Visual feedback on hover and copy
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- Add reedsolo library for RS error correction (32 symbols = 16 byte correction per 223-byte chunk)
- Protect entire payload (header + data) with RS encoding
- Store 3 copies of length header with majority voting for robustness
- Handle RS chunking overhead (varies based on data size)
- Update capacity calculation to account for RS overhead (24 bytes prefix + variable RS overhead)
- Add RS to dct, web, and api optional dependencies
- Update about.html with v4.1.0 Reed-Solomon feature
- Update module docstring
This fixes DCT decode failures with certain carrier images that have
uniform areas causing unstable DCT coefficients.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
