Hosted by StevenHatzakis.com on https://www.stevenhatzakis.com/shamir-secret-sharing-tool.html (This tool has been designed to be used offline. In your browser, select file save-as, and save this page as a .html file. Double-click that file to open it in a browser on any offline computer.)

Shamir Secret Sharing Scheme

Shamir Secret Sharing Scheme

Split your secret into parts which can be combined back into the original secret using some or all of the parts.

Step A: To Split Secret

Require parts from to reconstruct the following secret

Usage

Double click each part below to select the content for that part. Copy and paste the content for each part into 5 individual files on your computer.

  • Distribute one file to each person in your group.
  • If 3 of those people can combine the contents of their file using this page, they can view the secret.

Remember to delete the parts from your computer once you're finished. If you use a rubbish bin for deleted files, also remove them from the rubbish bin.

Step B: The Resulting n Parts:

  1. Enter your secret above.

Step C: To Recover Secret

Enter the secrets, one per line

Step D: The Reconstructed Secret:

Enter your n-threshold parts above in step 1.

Sources

Wikipedia entry for shamir secret sharing scheme.

This project is 100% open-source code.

Project source code

SSSS javascript library by amper5and

Bootstrap stylesheet

Offline Usage

This tool has been designed to be used offline. In your browser, select file save-as, and save this page as a .html file. Double-click that file to open it in a browser on any offline computer.