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
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Mobile-responsive CSS improvements:
- Larger touch targets for drop zones and buttons (56px min)
- Touch feedback with active states for touch devices
- Camera hint text on mobile ("Tap to take photo or choose file")
- Mode buttons stack vertically on small screens
- Full-width download buttons on mobile
- Navbar doesn't stick on mobile to save screen space
Release validation script (scripts/validate-release.sh):
- Automated pre-release checks: ruff, imports, encode/decode sanity
- Optional Docker build/test (--docker flag)
- Optional Pi smoke test via SSH (--pi flag)
- Pass/fail summary with exit codes
Other:
- Version bump to 4.1.2 (pyproject.toml, constants.py, __init__.py)
- Fixed ruff import sorting in cli.py
- Updated PLAN-4.1.2.md (all 9 features complete)
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Progress bar support (v4.1.2):
- Web frontend: Real-time progress during encode with phase display
- CLI: --progress flag with rich library for encode command
- Backend: progress_file parameter for async progress reporting
DCT decode bug fix:
- Fixed InvalidMagicBytesError not being caught in early-exit check
- RS-protected format (v4.1.0+) has length prefix first, not magic bytes
- Exception handler now catches both ValueError and InvalidMagicBytesError
MOTD update:
- Added sparkly header to setup.sh MOTD (matches other rpi scripts)
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New exceptions for specific decode failures:
- InvalidMagicBytesError: wrong mode or not a Stegasoo image
- ReedSolomonError: image too corrupted to recover
- NoDataFoundError, ModeMismatchError: additional clarity
Web UI now shows specific, actionable error messages:
- "Try a different mode (LSB/DCT)"
- "Image too corrupted, may have been re-saved"
- "Wrong credentials - check reference photo..."
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- 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.
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- Fix block calculation mismatch in DCT extract (use original dimensions)
- Change default dct_color_mode from "grayscale" to "color"
- Update DCT test to use noise image instead of solid color
- Remove debug logging from encode/decode paths
The block calculation fix ensures extract uses the same block positions
as embed for images whose dimensions aren't divisible by 8. This was
causing decode failures on the Pi web UI with 1195x671 images.
Color mode is now the default since it preserves the original image
colors. The test fixture now uses a random noise image because solid
color images cause coefficient drift during YCbCr/RGB conversion that
can corrupt embedded data.
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- Add required -r/--reference option to encode command
- Add required -r/--reference option to decode command
- Replace stub implementations with actual library calls
- CLI now properly encodes and decodes messages/files
- Fix smoke test form field names and add proper redirect handling
The CLI encode/decode were stubs that didn't actually work.
Now they properly use the stegasoo library functions.
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- Recovery key generation (32-char alphanumeric, dashed format)
- Multiple backup methods: text file, QR code, stego image
- QR codes obfuscated with XOR (RECOVERY_OBFUSCATION_KEY constant)
- Stego backup hides key in image using Stegasoo itself
- CLI: `stegasoo admin recover --db path/to/db`
- Web routes: /recover, /account/recovery/regenerate
- Toast notifications now auto-dismiss after 20s with fade
- Updated WEB_UI.md and CLI.md documentation for v4.1.0
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- Delete debug/diagnostic scripts (minimal_flask_crash.py, check_scipy.py)
- Delete old version summary markdown files
- Update RPi docs with default creds (admin/stegasoo)
- Add --soft flag documentation for sanitize script
- Switch compression from xz to zstd
- Add RPi image artifacts to .gitignore
- Improve sanitize-for-image.sh with validation and soft reset mode
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Use generate_channel_key() from channel module instead of hex
Format: XXXX-XXXX-XXXX-XXXX-XXXX-XXXX-XXXX-XXXX
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- stegasoo generate --channel-key now outputs a 256-bit hex key
- Also added .env.example template for Web UI configuration
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- Add single-admin login with SQLite3 user storage
- First-run setup wizard for admin account creation
- Account management page for password changes
- Optional HTTPS with auto-generated self-signed certificates
- Configurable via STEGASOO_AUTH_ENABLED, STEGASOO_HTTPS_ENABLED env vars
- UI improvements: larger QR previews, consistent panel styling
- Update docker-compose.yml with auth config and persistent volumes
- Update all documentation for v4.0.2
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New files:
- LICENSE (MIT) - Required legal file
- CHANGELOG.md - Version history following Keep a Changelog
- CONTRIBUTING.md - Contributor guidelines
- CODE_OF_CONDUCT.md - Community standards
- .github/ISSUE_TEMPLATE/ - Bug report and feature request forms
- .github/PULL_REQUEST_TEMPLATE.md - PR checklist
- src/stegasoo/py.typed - PEP 561 type hint marker
- examples/ - Usage examples (basic, file embedding, channel keys)
Updated:
- README.md - Added CI status badges
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Deleted stale backup files:
- frontends/cli/main.py_old
- src/stegasoo/dct_steganography.py_old
Added gitignore patterns for common backup extensions.
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The jpegio package raises ValueError when compiled against numpy 2.x
but numpy 1.x is installed at runtime. This catches the error gracefully
so tests don't fail on Python 3.10 environments with mismatched numpy.
Also removes stale steganography.py_old backup file.
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- Add sample_reference_photo fixture for test data
- Update sample_credentials fixture to include reference_photo
- Update all BatchCredentials test dicts to include reference_photo
- Add 'phrase' as legacy key in BatchCredentials.from_dict()
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- Update version to 4.0.1 across constants.py, __init__.py, pyproject.toml, README
- Refactor channel key UI from radio buttons to select dropdown
- Add LED indicator and key capsule CSS styles
- Reorganize encode/decode forms: RSA key section moved up, PIN + Channel in row
- Streamline channel key JavaScript for dropdown-based selection
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