PaperStorageX

1 GB = 250 PAGE A4 @ 600 DPI, field 5mm (11760 × 8268 px)

Printable Secure Storage — Multi-page, Flexible Formats, Always-On Encryption

PaperStorageX is a C++ utility that lets you archive and encrypt arbitrary data, encode it into printable PDF pages, and later reconstruct it back with full cryptographic integrity.

---

Core Features

• Encryption always enabled — AES-256-GCM with per-page nonce + tag.
• Key derivation — scrypt (configurable N/r/p, salt stored per volume).
• Page geometry — binary raster, default 1200 DPI (A-series, custom, or experimental).
• Resilient format — each page has a self-contained 512-byte header + ciphertext block.
• Integrity — full-volume SHA-256 (over plaintext) checked on decode.

How install?

git clone https://github.com/GitZipQR-vault/GitZipQR.cpp
cd GitZipQR.cpp

---

Supported Flags / Options

General

--password <any password type>   # Use any password type
--bin <file with password .bin>         # Use raw binary password from file
--folder <dir where throw data in PDF format>
--type <tar|zip>     # Archive input directory as TAR (default) or ZIP
--quiet              # Suppress logs
--no-tty             # For non-interactive environments
--page A4            # 11760×8268 @ 1200 DPI (default)
--page A3            # Larger payload (≈ 2× A4)
--page A2, A1, A0    # Even larger; scales by ISO A-series
--dpi <number>       # Custom resolution, overrides built-in presets

# Example:
-- page A0 --dpi 2400 gives massive payload per sheet.

# Advanced Formats
--nanotech           # Hypothetical "nanotech mode" — experimental layout 
                     # pushes density to theoretical limit (~500 TB per page).
--hybrid             # Hybrid mode combining multiple encoding layers (multi-bit + CMYK).
--gpi <level>        # Granularity Per Inch — sets modulation depth for custom density.
--levels <n>         # Use N intensity levels per pixel (multi-bit symbols).
-- ⚠️ Note: --nanotech, --hybrid, --gpi, --levels are forward-looking / experimental flags.
They define how data bits are mapped to printable cells. Not all printer/scanner pairs will survive these densities.

CLI USAGE

• Encode

./paperx encode --bin private.bin --page A3 --dpi 250 --folder data/test test.txt 

• Decode

./paperx decode --bin private.bin --folder out/test data/test/test.pdf 

• Reads all pages, validates UUID, GCM tags, SHA-256 checksum, then restores plaintext.

Print / Scan Guidance

• Print 1:1 scale at chosen DPI (disable “fit to page”).
• Disable filters: no contrast boost, no smoothing, no auto-deskew.
• Scan back at the same DPI, lossless (PNG/TIFF).

Next Steps (roadmap)

• Page-level forward-error correction (RS/Fountain codes).
• OpenCV-based auto-deskew and fiducial alignment.
• Real implementation of --nanotech and --hybrid.
• Integration with distributed “paper vault” libraries.