https://phpbolt.com encryption by cli. First install bolt.so file from https://phpbolt.com
First, download the encryption tool using Composer:
composer global require "phpbolt/encrypt @dev"
Make sure to place composer's system-wide vendor bin directory in your $PATH so the bolt encryption tool executable can be located by your system. This directory exists in different locations based on your operating system; however, some common locations include:
export PATH=$PATH:$HOME/.composer/vendor/bin
bolt -encrypt [source-folder] [key] [output-folder]
bolt -encrypt test/hello abcdef encrypted