---
title: Crypto-bridge
url: 'https://brendo.org/wp-content/plugins/two-factor-provider-webauthn/vendor/sop/crypto-bridge'
markdown: 'https://brendo.org/wp-content/plugins/two-factor-provider-webauthn/vendor/sop/crypto-bridge.md'
date: '2026-04-06'
description: 'CryptoBridge A PHP library providing cryptography support for various PKCS applications. Defines an interface with encrypt / decrypt and signature signing / verification methods. Currently only OpenSSL backend is supported. Key and algorithm information is passed in ASN.1 types implemented in s…'
---

# CryptoBridge

[![Build Status](https://travis-ci.org/sop/crypto-bridge.svg?branch=master)](https://travis-ci.org/sop/crypto-bridge)[![Scrutinizer Code Quality](https://scrutinizer-ci.com/g/sop/crypto-bridge/badges/quality-score.png?b=master)](https://scrutinizer-ci.com/g/sop/crypto-bridge/?branch=master)[![Coverage Status](https://coveralls.io/repos/github/sop/crypto-bridge/badge.svg?branch=master)](https://coveralls.io/github/sop/crypto-bridge?branch=master)[![License](https://poser.pugx.org/sop/crypto-bridge/license)](https://github.com/sop/crypto-bridge/blob/master/LICENSE)

A PHP library providing cryptography support for various PKCS applications.

Defines an interface with encrypt / decrypt and signature signing / verification methods. Currently only OpenSSL backend is supported.

Key and algorithm information is passed in ASN.1 types implemented in [`sop/crypto-types`](https://packagist.org/packages/sop/crypto-types) package.

## Requirements

- PHP >=7.2
- openssl
- [sop/crypto-types](https://github.com/sop/crypto-types)

## Installation

This library is available on [Packagist](https://packagist.org/packages/sop/crypto-bridge).

```
composer require sop/crypto-bridge
```

## License

This project is licensed under the MIT License.

---

## Navigation

- Previous: [Asn1](https://brendo.org/wp-content/plugins/two-factor-provider-webauthn/vendor/sop/asn1.md)
- Next: [Crypto-encoding](https://brendo.org/wp-content/plugins/two-factor-provider-webauthn/vendor/sop/crypto-encoding.md)