Implementation status

[panva]

Tracking implementation states all in one place. Feel free to post updates or other implementations here.

Implementor	Ed25519	X25519	Ed448	X448	in a stable release
Chromium (Chrome, Edge)1	✓	✓			✓
WebKit (Safari)2	✓	✓			✓
Gecko (Firefox)3	✓	✓			✓
Node.js4	✓	✓	✓	✓	✓
Deno5	✓				✓
Netlify Edge Functions5	✓				✓
Bun6	✓				✓
Cloudflare Workers7	✓	✓			✓
workerd7	✓	✓			✓
Vercel's Edge Runtime8	✓	✓			✓
Vercel's Edge Functions8	✓	✓			✓
Flow9	✓	✓	✓	✓	✓
Ladybird	✓	✓	✓	✓

Footnotes

1. Chromium ↩

2. WebKit ↩

3. Gecko ↩

4. Node.js ↩

5. Deno ↩ ↩²

6. Bun ↩

7. Clouflare ↩ ↩²

8. Vercel ↩ ↩²

9. Flow ↩

[panva]

Node.js

Ed25519, Ed448, X25519, and X448 are available since v18.4.0, also backported to v16.x (LTS).

cc @panva @tniessen @jasnell

[panva]

Deno

Ed25519 is available since v1.26.1, X25519 is not far from being complete.

Refs:

• WebCrypto CFRG curves tracking issue denoland/deno#16145

cc @littledivy

[panva]

Chromium

Implementation is done for Ed25519 and X25519, currently behind WebCryptoCurve25519 runtime flag.

Refs:

• https://bugs.chromium.org/p/chromium/issues/detail?id=1370697
• https://chromium-review.googlesource.com/c/chromium/src/+/4016576

cc @javifernandez

[panva]

WebKit

Implementation is done for Ed25519 and underway for X25519

Refs:

• https://bugs.webkit.org/show_bug.cgi?id=246145
• Support for Curve 25519 - Algorithm Ed25519 WebKit/WebKit#5026
• Support for the Curve 25519 in order to be able to work with such type of curves and implementation of X25519 Algorithm WebKit/WebKit#5811
• Support https://wicg.github.io/webcrypto-secure-curves/#ed25519 WebKit/WebKit#8691
• Ed25519 is now available in Safari Technology Preview. webkit.org/blog/13839/release-notes-for-safari-technology-preview-163

cc @youennf @angelaizg

---

Update October 2023: Safari 17.0 was released recently, now with support for Ed25519 without any feature flags.

[panva]

Bun

Ed25519 is available in Bun.

Refs: oven-sh/bun#1816

[fabricedesre]

Gecko bug

Tracked in: https://bugzilla.mozilla.org/show_bug.cgi?id=1804788

[panva]

PeculiarVentures/webcrypto

Refs: PeculiarVentures/webcrypto#60

[dwaite]

Ed25519 enabled as an experimental option in Safari Tech Preview 163. https://webkit.org/blog/13839/release-notes-for-safari-technology-preview-163/

[panva]

Cloudflare Workers and workerd

Ed25519 and X25519 is available in workerd / Cloudflare Workers.

Refs: cloudflare/workerd#500
Refs: https://github.com/cloudflare/workerd/releases/tag/v1.20230419.0

[panva]

edge-runtime

Ed25519 and X25519 is available in both local edge-runtime as well as on Vercel's service deployments.