1# phpseclib - PHP Secure Communications Library 2 3[](https://github.com/phpseclib/phpseclib) 4 5## Supporting phpseclib 6 7- [Become a backer or sponsor on Patreon](https://www.patreon.com/phpseclib) 8- [One-time donation via PayPal or crypto-currencies](http://sourceforge.net/donate/index.php?group_id=198487) 9- [Subscribe to Tidelift](https://tidelift.com/subscription/pkg/packagist-phpseclib-phpseclib?utm_source=packagist-phpseclib-phpseclib&utm_medium=referral&utm_campaign=readme) 10 11## Introduction 12 13MIT-licensed pure-PHP implementations of the following: 14 15SSH-2, SFTP, X.509, an arbitrary-precision integer arithmetic library, Ed25519 / Ed449 / Curve25519 / Curve449, ECDSA / ECDH (with support for 66 curves), RSA (PKCS#1 v2.2 compliant), DSA / DH, DES / 3DES / RC4 / Rijndael / AES / Blowfish / Twofish / Salsa20 / ChaCha20, GCM / Poly1305 16 17* [Browse Git](https://github.com/phpseclib/phpseclib) 18 19## Documentation 20 21* [Documentation / Manual](https://phpseclib.com/) 22* [API Documentation](https://api.phpseclib.com/3.0/) (generated by Doctum) 23 24## Branches 25 26### master 27 28* Development Branch 29* Unstable API 30* Do not use in production 31 32### 4.0 33 34* Expected Release Date: September 2026 35* Long term support (LTS) release 36* X509 split into separate X509, CRL, CSR and SPKAC classes 37* PFX and CMS classes added 38* All ASN1 classes are lazy loaded by default 39* Minimum PHP version: 8.1.0 40* PSR-4 autoloading with namespace rooted at `\phpseclib4` 41* Install via Composer: `composer require phpseclib/phpseclib:4.0.x-dev` 42 43### 3.0 44 45* Long term support (LTS) release 46* Major expansion of cryptographic primitives 47* Minimum PHP version: 5.6.1 48* PSR-4 autoloading with namespace rooted at `\phpseclib3` 49* Install via Composer: `composer require phpseclib/phpseclib:~3.0` 50 51### 2.0 52 53* Long term support (LTS) release 54* Modernized version of 1.0 55* Minimum PHP version: 5.3.3 56* PSR-4 autoloading with namespace rooted at `\phpseclib` 57* Install via Composer: `composer require phpseclib/phpseclib:~2.0` 58 59### 1.0 60 61* Long term support (LTS) release 62* PHP4 compatible 63* Composer compatible (PSR-0 autoloading) 64* Install using Composer: `composer require phpseclib/phpseclib:~1.0` 65* [Download 1.0.25 as ZIP](http://sourceforge.net/projects/phpseclib/files/phpseclib1.0.30.zip/download) 66 67## Security contact information 68 69To report a security vulnerability, please use the [Tidelift security contact](https://tidelift.com/security). Tidelift will coordinate the fix and disclosure. 70 71## Support 72 73Need Support? 74 75* [Checkout Questions and Answers on Stack Overflow](http://stackoverflow.com/questions/tagged/phpseclib) 76* [Create a Support Ticket on GitHub](https://github.com/phpseclib/phpseclib/issues/new) 77 78## Special Thanks 79 80<p align="left"> 81 <a target="_blank" href="https://www.sovereign.tech/tech/phpseclib"> 82 <img src="https://phpseclib.com/img/sponsors/sovereign-tech-agency.webp" alt="Sovereign Tech Agency" style="width: 200px"> 83 </a> 84</p> 85 86## Additional Thanks 87 88- Allan Simon 89- [Anna Filina](https://afilina.com/) 90- delovelady 91- [ChargeOver](https://chargeover.com/) 92- <a href="https://jb.gg/OpenSource"><img src="https://resources.jetbrains.com/storage/products/company/brand/logos/jetbrains.svg" height="20px"></a> 93 94## Contributing 95 961. Fork the Project 97 982. Ensure you have Composer installed (see [Composer Download Instructions](https://getcomposer.org/download/)) 99 1003. Install Development Dependencies 101 ```sh 102 composer install 103 ``` 104 1054. Create a Feature Branch 106 1075. Run continuous integration checks: 108 ```sh 109 composer global require php:^8.1 squizlabs/php_codesniffer friendsofphp/php-cs-fixer vimeo/psalm 110 phpcs --standard=build/php_codesniffer.xml 111 php-cs-fixer fix --config=build/php-cs-fixer.php --diff --dry-run --using-cache=no 112 psalm --config=build/psalm.xml --no-cache --long-progress --report-show-info=false --output-format=text 113 vendor/bin/phpunit --verbose --configuration tests/phpunit.xml 114 ``` 115 1166. Send us a Pull Request 117
