Paragon Initiative Enterprises Blog

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

Promoting Misuse-Resistance in PASETO Libraries

How we plan to discourage insecure implementations of PASETO.


Ristretto255 for the PHP Community

Introducing Ristretto255 for PHP developers


Against Cipher Agility in Cryptography Protocols

Why versioned protocols are superior to "cipher agility"-based cryptographic designs.


Demystifying Server-Side HTTP Requests for WordPress Developers

Your webserver can initiate HTTP requests too, and securing those matters a lot.


The Definitive 2019 Guide to Cryptographic Key Sizes and Algorithm Recommendations

A simple, accessible recommendation for key sizes and recommended algorithms for various cryptographic algorithms.


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.


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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.

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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