Contact emails
[email protected]

Explainer
No information provided


Specification
https://wicg.github.io/webcrypto-modern-algos


Summary
Add post-quantum cryptography and a common symmetric AEAD to the set of 
cryptographic algorithms available in the Web Cryptography API. This will 
enable developers to have access browser-provided implementations of common 
quantum-resistant cryptographic algorithms standardized by NIST. * ML-KEM - 
768, 1024 * ML-DSA - 44, 65, 87 * ChaCha20-Poly1305 * X-Wing


Blink component
Blink>WebCrypto


Web Feature ID
web-cryptography


Motivation
Web Crypto exposes various low-level primitives, however none of the 
public/private key cryptography is currently quantum-resistant Adding 
quantum-resistant cryptography as a primitive to the existing WebCrypto APIs 
allows Javascript cryptography libraries to automatically use browser-provided 
cryptography (which may be more securely implemented and/or backed by a 
FIPS-validated underlying library), rather than compiling OpenSSL to 
WebAssembly or reimplementing algorithms in pure Javascript (or simply not 
being PQC). Many Javascript cryptography libraries fall back to WebCrypto when 
it is available—these libraries will now be able to use BoringSSL-provided 
implementations instead of pure Javascript implementations.


Initial public proposal
No information provided


TAG review
No information provided


TAG review status
Not applicable


Origin Trial Name
Additional WebCrypto Algorithms


Goals for experimentation
Get a few sites to test out the new algorithms in real-world scenarios before 
shipping it, to ferret out any subtle bugs that might've slipped past us. 
Ensuring that the algorithms are cryptographically correct is not as big of a 
worry (as we're using BoringSSL's implementation of the crypto). Performance is 
also not a huge concern, but it would be good to get this evaluated with 
in-the-world usage.


Chromium Trial Name
WebCryptoAdditionalAlgorithms202606


Origin Trial documentation link
https://docs.google.com/document/d/1iFYtR2gab5wDh9DM00BSO8sqPtG6ATWPczmBoD2yLng/edit?usp=sharing


WebFeature UseCounter name
kCryptoAlgorithmMlDsa44


Risks




Interoperability and Compatibility
Won't work cross-browser until other browsers implement any of these new 
algorithms.

Gecko: Neutral (https://github.com/mozilla/standards-positions/issues/1282) 
Despite being neutral, Firefox is shipping anyway

WebKit: Neutral (https://github.com/WebKit/standards-positions/issues/641) 
Everyone is neutral because no one likes the Web Crypto API, but everyone 
agrees we should add PQC to it.

Web developers: No signals

Other signals:


WebView application risks

Does this intent deprecate or change behavior of existing APIs, such that it 
has potentially high risk for Android WebView-based applications?
None



Debuggability
No information provided


Will this feature be supported on all six Blink platforms (Windows, Mac, Linux, 
ChromeOS, Android, and Android WebView)?
Yes


Is this feature fully tested by web-platform-tests?
Yes
https://wpt.fyi/results/WebCryptoAPI


DevTrial instructions
https://docs.google.com/document/d/1iFYtR2gab5wDh9DM00BSO8sqPtG6ATWPczmBoD2yLng/edit?usp=sharing


Flag name on about://flags
webcrypto-pqc


Finch feature name
WebCryptoPQC


Rollout plan
Will ship enabled for all users


Requires code in //chrome?
False


Tracking bug
https://issues.chromium.org/issues/450627017


Launch bug
https://launch.corp.google.com/launch/4463007


Measurement
New Methods: https://chromestatus.com/metrics/feature/timeline/popularity/5830 
https://chromestatus.com/metrics/feature/timeline/popularity/5831 
https://chromestatus.com/metrics/feature/timeline/popularity/5832 
https://chromestatus.com/metrics/feature/timeline/popularity/5833 
https://chromestatus.com/metrics/feature/timeline/popularity/5901 New 
Algorithms: https://chromestatus.com/metrics/feature/timeline/popularity/5678, 
https://chromestatus.com/metrics/feature/timeline/popularity/5679, 
https://chromestatus.com/metrics/feature/timeline/popularity/5680, 
https://chromestatus.com/metrics/feature/timeline/popularity/5681, 
https://chromestatus.com/metrics/feature/timeline/popularity/5682, 
https://chromestatus.com/metrics/feature/timeline/popularity/5683, 
https://chromestatus.com/metrics/feature/timeline/popularity/5898,


Estimated milestones


Shipping on desktop 154

Origin trial desktop first 151

Origin trial desktop last 154

DevTrial on desktop 150

Shipping on Android 154

Origin trial Android first 151

Origin trial Android last 154

DevTrial on Android 150

Shipping on WebView 154




Anticipated spec changes

Open questions about a feature may be a source of future web compat or interop 
issues. Please list open issues (eg links to known github issues in the project 
for the feature specification) whose resolution may introduce web 
compat/interop risk (eg, changing to naming or structure of the API in a 
non-backward-compatible way).
No information provided


Link to entry on the Chrome Platform Status
https://chromestatus.com/feature/5198951632470016?gate=6595848137998336


Links to previous Intent discussions
Intent to Prototype: 
https://groups.google.com/a/chromium.org/d/msgid/blink-dev/68e95ca2.2b0a0220.2c868e.0000.GAE%40google.com
Ready for Trial: 
https://groups.google.com/a/chromium.org/g/blink-dev/c/WKF2N040tGM
Intent to Experiment: 
https://groups.google.com/a/chromium.org/d/msgid/blink-dev/6a32a33e.341e3fe1.243138.0c5e.GAE%40google.com



This intent message was generated by Chrome Platform Status.

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