---
title: WaveSign
emoji: 🔏
colorFrom: blue
colorTo: green
sdk: streamlit
sdk_version: 1.32.0
app_file: app.py
pinned: false
license: other
python_version: 3.11
short_description: Invisible physics-based file authentication - images/PDFs
---

# WaveSign — Invisible File Authentication

Sign and verify images and PDFs with an invisible cryptographic signature. Any modification after signing is detected instantly.

## Evaluation Results

| Metric | Result |
|---|---|
| **Tamper Detection Rate** | **100%** on all visible modifications |
| **False Rejection Rate** | **0%** |
| **Key Specificity** | **100%** |
| Signing time | 148 ms mean |
| Invisibility (PSNR) | 41.6 dB mean |

Tested across 900 cases, 22 scenarios. Full results: [EVALUATION.md](https://github.com/roloport/WaveSign/blob/main/EVALUATION.md)

## How It Works

WaveSign uses a proprietary physics-based method to embed an invisible cryptographic signature into your file:

1. Secret key → deterministic signing mask
2. File content → invisible embedded signature
3. Dual-layer verification: content signature + integrity hash
4. Any modification — pixel edit, brightness change, crop, compression — invalidates the signature

Your secret key never leaves your device.

## Usage

**Sign:** Upload file → enter secret key → download signed package (.zip)

**Verify:** Upload signed file → upload .json verification file → enter key → instant result

## Links

- GitHub: [roloport/WaveSign](https://github.com/roloport/WaveSign)
- Full Evaluation: [EVALUATION.md](https://github.com/roloport/WaveSign/blob/main/EVALUATION.md)

© 2026 roloport