Paragon Initiative Enterprises Blog

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

Security Concerns Surrounding WebAuthn: Don't Implement ECDAA (Yet)

If you're planning on implementing the W3C and FIDO Alliance's new WebAuthn standard for hardware security token support, skip ECDAA for now.


How and Why Developers Use Asymmetric (Public Key) Cryptography in Real-World Applications

A brief overview of the various common use-cases of asymmetric cryptography (also known as "public-key cryptography") from the perspective of a software developer.


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.


The 2018 Guide to Building Secure PHP Software

Everything a developer needs to know to build secure software in the PHP programming language in the year 2018


Assuring Ciphertext Integrity for Homomorphic Cryptosystems

How to build a homomorphic encryption scheme that is not vulnerable to chosen-ciphertext attacks, using blockchain-like protocols.


The Quick Guide to Simple and Secure Automatic Updates

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


Libsodium Quick Reference: Similarly-Named Functions and Their Use-Cases

A quick comparison of libsodium functions with similar names/purposes, and which one to use for a specific use case


Building Searchable Encrypted Databases with PHP and SQL

How to implement field-level data encryption while still allowing fast queries.


Checklist-Driven Security Considered Harmful

Application security has a checklist problem; we propose a better way forward.


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.


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