Paragon Initiative Enterprises Blog

The latest information from the team that develops cryptographically secure PHP software.

Protecting RSA-based Protocols Against Adaptive Chosen-Ciphertext Attacks

A deep dive into preventing chosen-ciphertext (e.g. padding oracle) attacks against RSA in custom encrypted transport protocols.


Certainty: Automated CACert.pem Management for PHP Software

Our new open source library, which keeps your Certificate Authority certificate bundle up-to-date.


The Quick Guide to Simple and Secure Automatic Updates

How to build your own automatic update system that is verifiably secure.


No Way, JOSE! Javascript Object Signing and Encryption is a Bad Standard That Everyone Should Avoid

JWT, JWE, JWS, etc. are terrible designs and need to be scrapped, not resuscitated.


Cryptographically Secure PHP Development

Your field guide to building secure cryptography features in PHP


Let's Make 2017 the Year of Simply Secure PHP Cryptography

Our plan to make libsodium a core PHP extension and write a userland polyfill for PHP 5.2.4+


Everything You Know About Public-Key Encryption in PHP is Wrong

The perils and pitfalls involved with implementing public-key encryption in a PHP project, and how to do it right.


Do-It-Yourself Hand-Crafted, Boutique, Artisinal Cryptosystems

How to quickly and effectively design a secure, custom cryptography protocol for your applications.


Guide to Automatic Security Updates For PHP Developers

Greatly improve the security of your software by making it automatically apply the latest security updates.


Solve All Your Cryptography Problems in 3 Easy Steps

A layman's introduction to using Halite, our libsodium wrapper


Need Technology Consultants?

Will tomorrow bring costly and embarrassing data breaches? Or will it bring growth, success, and peace of mind?

Our team of technology consultants have extensive knowledge and experience with application security and web/application development.

We specialize in cryptography and secure PHP development.

Let's Work Together Towards Success

Our Security Newsletters

Want the latest from Paragon Initiative Enterprises delivered straight to your inbox? We have two newsletters to choose from.

The first mails quarterly and often showcases our behind-the-scenes projects.

The other is unscheduled and gives you a direct feed into the findings of our open source security research initiatives.

Quarterly Newsletter   Security Announcements