Some Crypto algos implemented in PHP (LFSR, Stream cipher, RC4 etc...)
A Pure PHP (without any external PHP-extension) Implementation of BLAKE-256, GROESTL-256, JH-256, SKEIN-256 cryptography algorithms.
Virgil PHP Crypto Library is a high-level cryptographic library that allows you to perform all necessary operations for secure storing and transferring data and everything required to become HIPAA and GDPR compliant.
A Cryptography Library for PHP
Cryptographic library for PHP 7
Simple Encryption in PHP.