CIRCLE WITH A DOT

For folks that cannot install extensions (or just don't have a Rust toolchain setup):

GitHub - paragonie/pqcrypto_compat: Pure-PHP implementation of Post-Quantum Cryptography Algorithms

Pure-PHP implementation of Post-Quantum Cryptography Algorithms - paragonie/pqcrypto_compat

GitHub (github.com)

The PHP extension (written in Rust):

GitHub - paragonie/ext-pqcrypto: Post-Quantum Cryptography for PHP

Post-Quantum Cryptography for PHP. Contribute to paragonie/ext-pqcrypto development by creating an account on GitHub.

GitHub (github.com)

We're excited to finally make #postquantum #cryptography possible in the #PHP ecosystem

Post-Quantum Cryptography for the PHP Community - Paragon Initiative Enterprises Blog

Announcing a PHP extension and pure-PHP polyfill providing post-quantum cryptography for the PHP open source software community.

(paragonie.com)