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qre-privacy-toolkit

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QRE Privacy Toolkit: a "Privacy Swiss Army Knife"

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# QRE Privacy Toolkit

**The Local-First Swiss Army Knife for Digital Privacy.**

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QRE Privacy Toolkit is a secure, cross-platform application designed to handle your sensitive data without relying on the cloud. It runs natively on **Windows, macOS, Linux, and Android**.

**[📥 Download the Latest Release](https://github.com/powergr/qre-privacy-toolkit/releases)**

[![Sponsor powergr](https://img.shields.io/badge/Sponsor-%E2%9D%A4-pink?logo=github-sponsors&logoColor=white&style=flat)](https://github.com/sponsors/powergr)

---

![QRE Privacy Toolkit](https://raw.githubusercontent.com/powergr/qre-privacy-toolkit/main/qrev2.jpg)

---

## 🛠️ The 12-Tool Suite (v2.7.6)

QRE Privacy Toolkit combines 12 essential privacy tools into one mathematically secure, memory-safe application:

### **1. 🔐 File Encryption**

Secure any file—photos, tax documents, 50GB video backups—using military-grade **AES-256-GCM**.

- **Unlimited Size:** Powered by a custom **Rust Streaming Engine**, you can encrypt files of any size without exhausting your RAM.
- **Smart Compression:** Automatically compresses documents while skipping already-compressed media files to save CPU cycles.
- **Cross-Platform:** Lock a file on your PC, unlock it on your Android phone.
- **Time-lock Feature:** Time-Lock Encryption function implemented. Checking the correct time with NTP and ratchet time check.

### **2. 🔑 Password Vault & Offline 2FA**

A secure, offline, zero-knowledge database for your logins.

- **Offline Authenticator (TOTP):** Generate live 6-digit 2FA codes directly inside your vault. No need for cloud-synced authenticator apps on your phone.
- **Generators:** Built-in strong password generator and local strength meter.

### **3. 📝 Secure Notes**

An encrypted notepad for sensitive text that isn't just a password. Store recovery seeds, Wi-Fi codes, or private journals safely at rest.

### **4. 🔖 Private Bookmarks**

Save your sensitive links (Bank logins, Medical portals, Crypto exchanges) in an encrypted vault, completely hidden from browser syncing and forensic tools.

### **5. 📋 Secure Clipboard**

Grabs text from your clipboard, encrypts it into a secure history, and **wipes** the OS clipboard immediately. Auto-clears entries after a customizable TTL.

### **6. 🧹 Metadata Cleaner & Steganography Scan**

A dual-purpose media privacy suite:

- **Meta Cleaner:** Scrub hidden GPS coordinates, camera models, and author data from Images (JPG/PNG/WebP), PDFs, and Office Docs.
- **Steganography Detector:** Mathematically analyzes the Least Significant Bits (LSB) of an image to calculate its Shannon Entropy, detecting hidden, encrypted payloads embedded inside normal-looking photos.

### **7. 🕵️‍♂️ Local Secret Scanner & Breach Check**

Detect data leaks before they happen, and check if you've already been compromised.

- **Local Scanner:** Rapidly scans unencrypted `.txt`, `.csv`, and `.env` files on your hard drive to find exposed API keys, plaintext passwords, and crypto seed phrases.
- **HIBP API:** Checks if your password has appeared in known data leaks using **k-Anonymity**. We send only the first 5 characters of the hash to the internet.

### **8. ✅ Integrity Checker**

Verify that files you download (like crypto wallets, Linux ISOs, or installers) haven't been tampered with by hackers. Calculates SHA-256, SHA-1, and MD5 simultaneously.

### **9. 🗑️ Secure Shredder (Desktop)**

When you delete a file normally, the data remains on your disk. The Shredder physically overwrites your files with random noise (up to DoD Standard 3-Pass) before deleting them. Includes free-space wiping for HDDs and TRIM commands for SSDs.

### **10. 🔳 Secure QR Generator**

Share sensitive data (Wi-Fi passwords, Crypto addresses) with mobile devices completely offline. Data stays air-gapped on your screen.

### **11. 🧹 System & Registry Clean (Desktop)**

Remove temporary files, browser caches (Chrome, Edge, Brave), Windows Temp, and developer build artifacts (npm, cargo) to free up space. Safely scans and removes orphaned Windows Registry keys.

### **12. 🔎 File Analyzer**

Detects malicious files hiding behind fake extensions (e.g., `salary.pdf.exe`). Analyzes file headers (Magic Numbers) to determine the 'true' file type, ignoring the extension.

---

## 🛡️ Security Architecture

- **Memory Zeroization:** Cryptographic keys and plaintext payloads are actively scrubbed from your system's RAM (`0x00`) the exact moment they are no longer needed, defeating cold-boot attacks and RAM-scrapers.
- **Key Derivation:** Argon2id (Resistant to GPU brute-force attacks).
- **Hybrid Paranoid Mode:** Mitigates theoretical hardware RNG backdoors by XOR-mixing your physical mouse/touch timing jitter directly into the OS's cryptographic seed.
- **Panic Button:** `Ctrl+Shift+Q` instantly kills the app and wipes memory (Desktop).
- **Auto-Lock:** Sessions timeout automatically after inactivity.

---

## 💾 Portable USB Vaults

Transform any standard USB flash drive into a highly secure, cross-platform encrypted vault—no hardware encryption chips required.

- **True Portability:** Initialize a USB drive on your PC, unplug it, and securely unlock your files on any Windows, macOS, or Linux machine running QRE.
- **Multi-Vault Architecture:** QRE’s Rust backend functions as a dynamic Key Manager, securely holding multiple active `MasterKeys` in isolated memory environments simultaneously.
- **Ghost-File Protection (NAND Defense):** Because flash memory hardware uses wear-leveling algorithms that leave deleted plaintext data forensically recoverable, QRE enforces a safe "Encrypt locally, copy securely" workflow, warning you before you encrypt directly on a USB.
- **Sudden Ejection Watcher:** If a malicious actor (or clumsy user) physically yanks the unlocked USB drive out of the machine, a dedicated Rust background thread instantly detects the hardware removal and zeroes the Master Key from RAM.
- **Evil-Maid Verification:** During initialization, a unique Vault UUID is generated. Every time you unlock the drive on a new computer, the UUID is displayed, allowing you to verify out-of-band that an attacker hasn't stealthily swapped your USB's keychain file.

---

## New in v2.7.6

Time-Lock Encryption. Read more [Time-lock blog post](https://projectqre.com/blog-timelock-encryption.html)

---

## 🚀 Getting Started & Building

```bash
# 1. Install Dependencies
npm install

# 2. Run in Dev Mode
npm run tauri dev

# 3. Build for Release
npm run tauri build
```

## ⚠️ Important Security Notice

QRE Toolkit follows a strict **Zero-Knowledge** architecture. If you lose your **Master Password** AND your **Recovery Code**, your data is mathematically inaccessible. There is no "Password Reset" button because there is no server. **Backup your `keychain.json` file safely.**

---

## ✅ Test Coverage

QRE Privacy Toolkit maintains rigorous, automated cryptographic and UI testing to guarantee safety across updates.

**Rust Backend (`cargo test`):**

- 83 tests passed from 83 total (Covers memory wiping, file routing, steganography math, Zip-Bomb prevention, and AES-GCM streaming integrity).

**Frontend (`npm test`):**

- Vitest/Jest suite covering UI state, ReDoS-safe regex heuristic parsing, and password strength algorithm boundaries.

---

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