Perhaps reach out to Paragon Initiative Enterprises https://paragonie.com/ https://paragonie.com/ They do a lot of security related work for PHP. It was them t

Perhaps reach out to Paragon Initiative Enterprises https://paragonie.com/ https://paragonie.com/ They do a lot of security related work for PHP. It was them that added libsodium cryptography library to PHP. They have a few well known open source projects about cryptography and secure practices. https://paragonie.com/software https://paragonie.com/software