webcrypto.dart
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Explore adding support for Ed25519 and X25519
We need to start by exploring how many browsers support these.
And write test cases that show browsers are implementing these in similar manners :D
@jonasfj Can I Use mentions that X25519 is supported across major web browsers
Support for Android [1] remains less (we have new developments in this front from 7 days ago - taken towards the end)
from https://caniuse.com/mdn-api_subtlecrypto_generatekey_x25519
wrote a small script to test my suspicions for Edge and Brave: https://gist.github.com/HamdaanAliQuatil/2170d5336ed18e9261e6b77a434dae63
Brave does not support this (it uses Chromium 132.0.6834.160) but Edge does support x25519 - unlike what is mentioned in the above link. Similarly, [1] Chrome 133 (133.0.6943.49) was released for Android 7 days ago: https://chromereleases.googleblog.com/2025/02/chrome-for-android-update.html#:~:text=We've%20just%20released%20Chrome,includes%20stability%20and%20performance%20improvements.
X25519 is most likely supported for Android as well (as the release notes suggest). Now that confirms that Can I Use is not up to date.
I believe we should add support for X25519 as it it widely supported as of today.
Update: Brave upgraded Chromium to 133.0.6943.54 6 days ago (https://brave.com/latest/) I updated my browser and tested the script. X25519 is supported and the script works