incipher / shamir

🔑 Split and combine secrets using Shamir's Secret Sharing algorithm

shamir

Split and combine secrets using Shamir's Secret Sharing algorithm

Table of Contents

• Table of Contents
• Description
• Background
• Installation
• Usage
  • Interactive
  • Non-interactive
• License

Description

Featuring UNIX-style composability, this command-line tool facilitates splitting and combining secrets using HashiCorp Vault's implementation of Shamir's Secret Sharing algorithm.

Background

What is Shamir's Secret Sharing algorithm?

Installation

Platform	Package manager	Command
Linux, macOS	Homebrew	$ brew install incipher/tap/shamir
Linux, macOS, Windows	Binaries

Usage

Interactive

Non-interactive

$ echo "SayHelloToMyLittleFriend" | shamir split -n 5 -k 3 > shares.txt
Secret: ************************

$ head -n 3 shares.txt | shamir combine -k 3
SayHelloToMyLittleFriend

License

CC0