| Component | Minimum |
|---|---|
| WordPress | 6.0+ |
| PHP | 7.4+ (8.1+ recommended for native openssl_pkey_derive) |
| PHP extensions | openssl with EC support, gmp (fallback ECDH for PHP < 8.1) |
| HTTPS | Required — service workers only run on secure origins |
| Browser | Chrome 67+, Firefox 63+, Edge 79+, Safari 16.4+ (push not on all) |
PHP 8.0 and below: The plugin uses a pure-PHP P-256 scalar multiplication fallback (GMP) for ECDH key agreement. Install the
gmpextension if not present.