It looks really interesting but the link is giving me an SSL error :/
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testssl.sh's client simulation:
Running client simulations via sockets
Browser Protocol Cipher Suite Name (OpenSSL) Forward Secrecy
------------------------------------------------------------------------------------------------
Android 7.0 (native) No connection
Android 8.1 (native) No connection
Android 9.0 (native) No connection
Android 10.0 (native) No connection
Android 11/12 (native) No connection
Android 13/14 (native) No connection
Android 15 (native) TLSv1.3 TLS_AES_128_GCM_SHA256 X25519MLKEM768
Chrome 101 (Win 10) No connection
Chromium 137 (Win 11) TLSv1.3 TLS_AES_128_GCM_SHA256 X25519MLKEM768
Firefox 100 (Win 10) No connection
Firefox 137 (Win 11) TLSv1.3 TLS_AES_128_GCM_SHA256 X25519MLKEM768
IE 8 Win 7 No connection
IE 11 Win 7 No connection
IE 11 Win 8.1 No connection
IE 11 Win Phone 8.1 No connection
IE 11 Win 10 No connection
Edge 15 Win 10 No connection
Edge 101 Win 10 21H2 No connection
Edge 133 Win 11 23H2 TLSv1.3 TLS_AES_128_GCM_SHA256 X25519MLKEM768
Safari 18.4 (iOS 18.4) No connection
Safari 15.4 (macOS 12.3.1) No connection
Safari 18.4 (macOS 15.4) No connection
Java 7u25 No connection
Java 8u442 (OpenJDK) No connection
Java 11.0.2 (OpenJDK) No connection
Java 17.0.3 (OpenJDK) No connection
Java 21.0.6 (OpenJDK) No connection
go 1.17.8 No connection
LibreSSL 3.3.6 (macOS) No connection
OpenSSL 1.0.2e No connection
OpenSSL 1.1.1d (Debian) No connection
OpenSSL 3.0.15 (Debian) No connection
OpenSSL 3.5.0 (git) TLSv1.3 TLS_AES_128_GCM_SHA256 X25519MLKEM768
Apple Mail (16.0) No connection
Thunderbird (91.9) No connection
For me, very fresh browser and/or SSL/TLS library needed.
Same here, but saving the post just in case is solved.
Does https://pq.cloudflareresearch.com/ confirm your browser is using X25519MLKEM768?
I've multiple Firefox-based browsers (including Firefox proper) in Android that are shown as not supporting it. The only one that supported it was IronFox (and even that only showed after a page reload for some reason). Chrome & Cromite do as well. Good to know, thank you!
Vanilla Firefox in android is shown as not using PQ. Waterfox is OK, and got access to the article. Thanks for the link!
Are you sure you're using an up to date browser? My server is using TLS 1.3 with x25519mlkem768. Most browsers should support this KEM already.
I'm using the latest firefox on the latest android (just tried it on chrome from the same phone and it loads fine)