WebCrypto support for P-521

[diachedelic]

It is said that a P-521 key gives the equivalent security of a 256-bit AES key. However, Deno's WebCrypto implementation currently only supports P-256 and P-384 keys.

The WebCrypto roadmap indicates that P-521 support is planned. Are we waiting on P-521 support in dependencies like RustCrypto, or can we proceed?

[lucacasonato]

Are we waiting on P-521 support in dependencies like RustCrypto

Yes, this is the current holdup.

[littledivy]

There is already an issue for this (had a typo in the title) #13449

[lucacasonato]

I had thought so too, but I couldn't find it because of the typo 😅

Closing as duplicate of #13449