feat(baileys): add passkey companion-linking ceremony#2628
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mateus2001ferreira wants to merge 1 commit into
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feat(baileys): add passkey companion-linking ceremony#2628mateus2001ferreira wants to merge 1 commit into
mateus2001ferreira wants to merge 1 commit into
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Add opt-in support for WhatsApp's passkey (Shortcake/CRSC) companion-linking flow, implemented on top of Baileys' public API without forking it. A browser helper extension performs the WebAuthn assertion; the ceremony is driven via public /passkey-ceremony endpoints and exposed through connectionState. Gated behind PASSKEY_CEREMONY_ENABLED (default off) since a malformed IQ can get the number banned. Requires PASSKEY_PUBLIC_URL reachable by the browser.
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Description
Adds opt-in support for WhatsApp's passkey (Shortcake/CRSC) companion-linking flow, which some numbers now require when linking a device. Implemented on top of Baileys' public API — no fork or patch of Baileys needed.
How it works:
PasskeyCeremonyhandles the server'spasskey_prologue_request/crsc_continuationnotifications and replies with the matching IQs (passkey_prologue,companion_nonce,encrypted_pairing_request).GET/POST /passkey-ceremony/:token[/response|/confirm]let the extension read the challenge and submit the assertion; the current stage and open URL are exposed viaconnectionState.Gated behind
PASSKEY_CEREMONY_ENABLED=true(default off), since a malformed IQ can get a number banned. Also requires:PASSKEY_PUBLIC_URL— API base reachable by the browser running WhatsApp WebCORS_ORIGINallowing*orhttps://web.whatsapp.comCrypto is an independent reimplementation of whatsmeow's
pair-passkey.go(MPL-2.0); no code copied. No dependency changes (works on the current Baileys 7.0.0-rc.9).Type of Change
Checklist
Additional Notes
The feature ships a small browser helper extension (
public/passkey-helper.zip) that performs the WebAuthn assertion. Happy to discuss whether shipping it in-repo, as source, or as a separate distribution is preferable. Also glad to add the two env vars to.env.exampleif the approach is accepted.