deriveBits() fails if length is not a multiple of 8 for ECDH algorithm. This doesn't match the specification or the behavior of Chrome.
Created attachment 433134 [details] Patch
Committed r279723 (239511@main): <https://commits.webkit.org/239511@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 433134 [details].
<rdar://problem/80327952>