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cline/shamir
============

Shamir's Secret Sharing scheme implementation for PHP

2.0.1(2mo ago)01MITPHPPHP ^8.4.0CI passing

Since Mar 4Pushed 2mo agoCompare

[ Source](https://github.com/faustbrian/shamir)[ Packagist](https://packagist.org/packages/cline/shamir)[ RSS](/packages/cline-shamir/feed)WikiDiscussions 2.x Synced 1mo ago

READMEChangelog (1)Dependencies (3)Versions (7)Used By (0)

[![GitHub Workflow Status](https://github.com/faustbrian/shamir/actions/workflows/quality-assurance.yaml/badge.svg)](https://github.com/faustbrian/shamir/actions)[![Latest Version on Packagist](https://camo.githubusercontent.com/55e82501ad47b2746fbe24919a139be8b951680a6d2bedffb17917c9bfeed07f/68747470733a2f2f696d672e736869656c64732e696f2f7061636b61676973742f762f636c696e652f7368616d69722e737667)](https://packagist.org/packages/cline/shamir)[![Software License](https://camo.githubusercontent.com/784362b26e4b3546254f1893e778ba64616e362bd6ac791991d2c9e880a3a64e/68747470733a2f2f696d672e736869656c64732e696f2f62616467652f4c6963656e73652d4d49542d677265656e2e737667)](LICENSE.md)[![Total Downloads](https://camo.githubusercontent.com/5bebcc4286786b7ca3b36e6a561d012f34c54f88685da6c4d979deaaf431af05/68747470733a2f2f696d672e736869656c64732e696f2f7061636b61676973742f64742f636c696e652f7368616d69722e737667)](https://packagist.org/packages/cline/shamir)

---

A pure PHP implementation of Shamir's Secret Sharing scheme with fluent conductor API, allowing secrets to be split into N shares where any M shares can reconstruct the original secret. Features zero external dependencies, information-theoretic security, and automatic chunking for large secrets.

Requirements
------------

[](#requirements)

> **Requires [PHP 8.4+](https://php.net/releases/)**

Installation
------------

[](#installation)

```
composer require cline/shamir
```

Documentation
-------------

[](#documentation)

Full documentation is available at :

- **[Getting Started](https://docs.cline.sh/shamir/getting-started)** - Installation, basic usage, and quick start
- **[API Reference](https://docs.cline.sh/shamir/api-reference)** - Complete API documentation
- **[Use Cases](https://docs.cline.sh/shamir/use-cases)** - Real-world examples and practical applications
- **[Security](https://docs.cline.sh/shamir/security)** - Security considerations and best practices
- **[Advanced Usage](https://docs.cline.sh/shamir/advanced-usage)** - Advanced patterns and techniques

Quick Example
-------------

[](#quick-example)

```
use Cline\Shamir\Shamir;

// Split a secret into 5 shares, requiring 3 to reconstruct
$shares = Shamir::for('my-encryption-key')
    ->threshold(3)
    ->shares(5)
    ->split();

// Reconstruct from any 3 shares
$secret = Shamir::from($shares->take(3))->combine();
```

Change log
----------

[](#change-log)

Please see [CHANGELOG](CHANGELOG.md) for more information on what has changed recently.

Contributing
------------

[](#contributing)

Please see [CONTRIBUTING](CONTRIBUTING.md) and [CODE\_OF\_CONDUCT](CODE_OF_CONDUCT.md) for details.

Security
--------

[](#security)

If you discover any security related issues, please use the [GitHub security reporting form](https://github.com/faustbrian/shamir/security) rather than the issue queue.

Credits
-------

[](#credits)

- [Brian Faust](https://github.com/faustbrian)
- [All Contributors](../../contributors)

License
-------

[](#license)

The MIT License. Please see [License File](LICENSE.md) for more information.

###  Health Score

40

—

FairBetter than 88% of packages

Maintenance86

Actively maintained with recent releases

Popularity2

Limited adoption so far

Community6

Small or concentrated contributor base

Maturity56

Maturing project, gaining track record

 Bus Factor1

Top contributor holds 100% of commits — single point of failure

How is this calculated?**Maintenance (25%)** — Last commit recency, latest release date, and issue-to-star ratio. Uses a 2-year decay window.

**Popularity (30%)** — Total and monthly downloads, GitHub stars, and forks. Logarithmic scaling prevents top-heavy scores.

**Community (15%)** — Contributors, dependents, forks, watchers, and maintainers. Measures real ecosystem engagement.

**Maturity (30%)** — Project age, version count, PHP version support, and release stability.

###  Release Activity

Cadence

Every ~20 days

Total

6

Last Release

64d ago

Major Versions

1.0.2 → 2.0.02026-03-04

### Community

Maintainers

![](https://avatars.githubusercontent.com/u/22145591?v=4)[Brian Faust](/maintainers/faustbrian)[@faustbrian](https://github.com/faustbrian)

---

Top Contributors

[![faustbrian](https://avatars.githubusercontent.com/u/22145591?v=4)](https://github.com/faustbrian "faustbrian (8 commits)")

---

Tags

cryptographyencryptionthresholdshamirkey-managementsecret-sharing

###  Code Quality

TestsPest

Static AnalysisPHPStan

Type Coverage Yes

### Embed Badge

![Health badge](/badges/cline-shamir/health.svg)

```
[![Health](https://phpackages.com/badges/cline-shamir/health.svg)](https://phpackages.com/packages/cline-shamir)
```

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