🔒 LinDLocker ( Linux Directory Locker )

Requires: Root access, Linux kernel with LUKS support

🚀 What is LinDLocker?

LinDLocker is a powerful bash script that encrypts existing directories with military-grade LUKS encryption. When locked, directories appear empty to everyone - even root users. Only with the correct password can the contents be accessed.

Key Features:

• 🔐 Military-grade LUKS encryption (AES-256)
• 👻 Stealth mode - Locked directories appear empty
• 🛡️ Root-proof - Even system administrators can't bypass encryption
• 📊 Automatic sizing - Calculates optimal container size
• 🔄 Preserves permissions - All file attributes maintained
• 🚨 Emergency recovery - Access data even without the script

📦 Installation

Step 1: Download the Script

git clone https://github.com/yourusername/lindlocker.git

cd lindlocker

Step 2: Install Dependencies

sudo ./setup.sh

Step 3: Make Script Executable

chmod +x lindlocker

🎯 Quick Start

Lock your first directory:

sudo ./lindlocker lock /home/user/secret-files

Unlock when needed:

sudo ./lindlocker unlock /home/user/secret-files

Lock it back:

sudo ./lindlocker close /home/user/secret-files

Remove the Lock:

sudo ./lindlocker remove /home/user/secret-files

🛡️ Security Features

What Makes LinDLocker Secure?

• LUKS Encryption: Uses Linux Unified Key Setup with AES-256
• No Backdoors: Password is the ONLY way to access data
• Root Protection: Even system administrators with root access cannot decrypt without password
• Stealth Mode: Locked directories appear as empty folders
• No Metadata Leaks: File names, sizes, and permissions are encrypted

⚠️ Critical Security Warning:

• Lost password = Lost data forever
• No recovery possible without password
• No master key or backdoor exists
• Always test with non-critical data first

🆘 Emergency Recovery

What if the script is deleted?

Your data is SAFE! The encryption containers are stored separately. Here's how to recover:

Manual Recovery Commands:

1. Find your encrypted container:

   ls -lh /var/lib/lindlocker/containers/

2. Open the container:

   sudo cryptsetup open /var/lib/lindlocker/containers/YOUR_VAULT.vault my_vault

3. Mount to access files:

   sudo mkdir -p /mnt/recovery
   sudo mount /dev/mapper/my_vault /mnt/recovery
   cd /mnt/recovery

4. When done, close it:

   sudo umount /mnt/recovery
   sudo cryptsetup close my_vault

View All Locked Directories:

cat /var/lib/lindlocker/vaults.conf

Export Recovery Information:

sudo ./lindlocker export ~/lindlocker-backup.txt

📁 How It Works

The Encryption Process:

1. Analysis: Scans directory to calculate required size
2. Container Creation: Creates encrypted LUKS container
3. File Transfer: Moves all files into encrypted storage
4. Cleanup: Securely removes original files
5. Stealth: Directory appears empty when locked

Data Storage Locations:

• Containers: /var/lib/lindlocker/containers/
• Configuration: /var/lib/lindlocker/vaults.conf
• Logs: /var/lib/lindlocker/lindlocker.log

🚫 What NOT To Encrypt

DO NOT encrypt these directories:

• / (root filesystem)
• /bin, /sbin, /usr
• /lib, /lib64
• /boot, /dev
• /proc, /sys

Safe directories to encrypt:

• /home/user/documents/
• /root/.ssh/
• /var/www/private/
• Any user data directories

🔧 Technical Details

Dependencies:

• cryptsetup - LUKS encryption
• rsync - File transfer with attributes
• pv - Progress visualization
• lsof - Open file detection

Supported Distributions:

• Ubuntu/Debian
• RHEL/CentOS
• Fedora
• Arch Linux
• openSUSE

Mail on :- piyushbusiness29@gmail.com in case of any Bug or Query !