Shamir's Secret Sharing Bash Script

This repository contains a Bash script for splitting and recombining a private key using Shamir's Secret Sharing scheme. This can be useful for securely storing and sharing sensitive information such as private keys.

Dependencies

• ssss: Install using your package manager, e.g., sudo apt-get install ssss.

Usage

1. Clone this repository to your local machine.
2. Navigate to the repository directory in your terminal.
3. Run the script using the command bash script.sh.
4. Follow the prompts to either split or combine a private key.

Splitting a key

• Enter the private key (input will be hidden for security).
• Choose whether to verify the key. Type 'full' to display the full key, 'part' to display the first and last part, or anything else to skip.
• Enter the number of parts to split the key into.
• Enter the number of parts required to reassemble the key.
• Enter the security level (e.g., 128, 256, 512; or leave blank for automatic).
• The key parts will be saved in files named key_parts-1 to key_parts-n.

Combining a key

• Enter the number of parts required to reassemble the key.
• Place the key parts files in the current directory.
• Press Enter to combine the key parts and reassemble the private key.

Security Notes

• This script is a basic implementation and may not be suitable for production use without further security enhancements.
• Ensure to securely delete the key parts files and the reassembled private key file after use.
• It's recommended to run this script in a secure environment to prevent potential eavesdropping or other security threats.

License

This project is licensed under the MIT License - see the LICENSE file for details.