122 lines
5.2 KiB
Markdown
122 lines
5.2 KiB
Markdown
|
php-encryption
|
||
|
|
===============
|
||
|
|
|
||
|
|
[](https://travis-ci.org/defuse/php-encryption)
|
||
|
|
[](https://codecov.io/gh/defuse/php-encryption)
|
||
|
|
[](https://packagist.org/packages/defuse/php-encryption)
|
||
|
|
[](https://packagist.org/packages/defuse/php-encryption)
|
||
|
|
[](https://packagist.org/packages/defuse/php-encryption)
|
||
|
|
|
||
|
|
```terminal
|
||
|
|
composer require defuse/php-encryption
|
||
|
|
```
|
||
|
|
|
||
|
|
This is a library for encrypting data with a key or password in PHP. **It
|
||
|
|
requires PHP 5.6 or newer and OpenSSL 1.0.1 or newer.** We recommend using a
|
||
|
|
version of PHP that [still has security
|
||
|
|
support](https://www.php.net/supported-versions.php), which at the time of
|
||
|
|
writing means PHP 7.3 or later. Using this library with an unsupported
|
||
|
|
version of PHP could lead to security vulnerabilities.
|
||
|
|
|
||
|
|
The current version of `php-encryption` is v2.3.1. This library is expected to
|
||
|
|
remain stable and supported by its authors with security and bugfixes until at
|
||
|
|
least January 1st, 2022.
|
||
|
|
|
||
|
|
The library is a joint effort between [Taylor Hornby](https://defuse.ca/) and
|
||
|
|
[Scott Arciszewski](https://paragonie.com/blog/author/scott-arcizewski) as well
|
||
|
|
as numerous open-source contributors.
|
||
|
|
|
||
|
|
What separates this library from other PHP encryption libraries is, firstly,
|
||
|
|
that it is secure. The authors used to encounter insecure PHP encryption code on
|
||
|
|
a daily basis, so they created this library to bring more security to the
|
||
|
|
ecosystem. Secondly, this library is "difficult to misuse." Like
|
||
|
|
[libsodium](https://github.com/jedisct1/libsodium), its API is designed to be
|
||
|
|
easy to use in a secure way and hard to use in an insecure way.
|
||
|
|
|
||
|
|
|
||
|
|
Dependencies
|
||
|
|
------------
|
||
|
|
|
||
|
|
This library requires no special dependencies except for PHP 5.6 or newer with
|
||
|
|
the OpenSSL extensions (version 1.0.1 or later) enabled (this is the default).
|
||
|
|
It uses [random\_compat](https://github.com/paragonie/random_compat), which is
|
||
|
|
bundled in with this library so that your users will not need to follow any
|
||
|
|
special installation steps.
|
||
|
|
|
||
|
|
Getting Started
|
||
|
|
----------------
|
||
|
|
|
||
|
|
Start with the [**Tutorial**](docs/Tutorial.md). You can find instructions for
|
||
|
|
obtaining this library's code securely in the [Installing and
|
||
|
|
Verifying](docs/InstallingAndVerifying.md) documentation.
|
||
|
|
|
||
|
|
After you've read the tutorial and got the code, refer to the formal
|
||
|
|
documentation for each of the classes this library provides:
|
||
|
|
|
||
|
|
- [Crypto](docs/classes/Crypto.md)
|
||
|
|
- [File](docs/classes/File.md)
|
||
|
|
- [Key](docs/classes/Key.md)
|
||
|
|
- [KeyProtectedByPassword](docs/classes/KeyProtectedByPassword.md)
|
||
|
|
|
||
|
|
If you encounter difficulties, see the [FAQ](docs/FAQ.md) answers. The fixes to
|
||
|
|
the most commonly-reported problems are explained there.
|
||
|
|
|
||
|
|
If you're a cryptographer and want to understand the nitty-gritty details of how
|
||
|
|
this library works, look at the [Cryptography Details](docs/CryptoDetails.md)
|
||
|
|
documentation.
|
||
|
|
|
||
|
|
If you're interested in contributing to this library, see the [Internal
|
||
|
|
Developer Documentation](docs/InternalDeveloperDocs.md).
|
||
|
|
|
||
|
|
Other Language Support
|
||
|
|
----------------------
|
||
|
|
|
||
|
|
This library is intended for server-side PHP software that needs to encrypt data at rest.
|
||
|
|
If you are building software that needs to encrypt client-side, or building a system that
|
||
|
|
requires cross-platform encryption/decryption support, we strongly recommend using
|
||
|
|
[libsodium](https://download.libsodium.org/doc/bindings_for_other_languages) instead.
|
||
|
|
|
||
|
|
Examples
|
||
|
|
---------
|
||
|
|
|
||
|
|
If the documentation is not enough for you to understand how to use this
|
||
|
|
library, then you can look at an example project that uses this library:
|
||
|
|
|
||
|
|
- [encutil](https://github.com/defuse/encutil)
|
||
|
|
- [fileencrypt](https://github.com/tsusanka/fileencrypt)
|
||
|
|
|
||
|
|
Security Audit Status
|
||
|
|
---------------------
|
||
|
|
|
||
|
|
This code has not been subjected to a formal, paid, security audit. However, it
|
||
|
|
has received lots of review from members of the PHP security community, and the
|
||
|
|
authors are experienced with cryptography. In all likelihood, you are safer
|
||
|
|
using this library than almost any other encryption library for PHP.
|
||
|
|
|
||
|
|
If you use this library as a part of your business and would like to help fund
|
||
|
|
a formal audit, please [contact Taylor Hornby](https://defuse.ca/contact.htm).
|
||
|
|
|
||
|
|
Public Keys
|
||
|
|
------------
|
||
|
|
|
||
|
|
The GnuPG public key used to sign current and older releases is available in
|
||
|
|
[dist/signingkey.asc](https://github.com/defuse/php-encryption/raw/master/dist/signingkey.asc). Its fingerprint is:
|
||
|
|
|
||
|
|
```
|
||
|
|
2FA6 1D8D 99B9 2658 6BAC 3D53 385E E055 A129 1538
|
||
|
|
```
|
||
|
|
|
||
|
|
You can verify it against Taylor Hornby's [contact
|
||
|
|
page](https://defuse.ca/contact.htm) and
|
||
|
|
[twitter](https://twitter.com/DefuseSec/status/723741424253059074).
|
||
|
|
|
||
|
|
Due to the old key expiring, new releases will be signed with a new public key
|
||
|
|
available in [dist/signingkey-new.asc](https://github.com/defuse/php-encryption/raw/master/dist/signingkey-new.asc). Its fingerprint is:
|
||
|
|
|
||
|
|
```
|
||
|
|
6DD6 E677 0281 5846 FC85 25A3 DD2E 507F 7BDB 1669
|
||
|
|
```
|
||
|
|
|
||
|
|
A signature of this new key by the old key is available in
|
||
|
|
[dist/signingkey-new.asc.sig](https://github.com/defuse/php-encryption/raw/master/dist/signingkey-new.asc.sig).
|