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.


Require parts from to reconstruct the following secret


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.


  1. Enter your secret above.


Enter the secrets, one per line


Enter your parts above.


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 file.

Double-click that file to open it in a browser on any offline computer.