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feat(mobile): Android Digital Asset Links for passkey domain binding - #590

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feat(mobile): Android Digital Asset Links for passkey domain binding#590
Osuolale1 wants to merge 1 commit into
Miracle656:mainfrom
Osuolale1:android-asset-links

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@Osuolale1

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Closes #447

Summary

Set up the Android equivalent of passkey domain binding via Digital Asset Links, proving the app and website belong to the same entity. This is self-serve and needs no paid account, so it lands ahead of iOS and unblocks real-device passkey testing on Android.

  • Added frontend/website/public/.well-known/assetlinks.json, served statically by the Next.js website at https://veil.app/.well-known/assetlinks.json. Declares com.veil.wallet as the linked Android app, with delegate_permission/common.get_login_creds (required for credential/passkey sharing) alongside delegate_permission/common.handle_all_urls.
  • Added android.package: "com.veil.wallet" and an android.intentFilters entry with autoVerify: true for https://veil.app/* in frontend/mobile/app.json, matching the RP ID (veil.app) already used for passkeys elsewhere in the codebase (frontend/mobile/lib/passkey.ts, frontend/mobile/lib/__tests__/restore.test.ts).
  • The sha256_cert_fingerprints value in assetlinks.json is a placeholder (REPLACE_WITH_APP_SIGNING_CERT_SHA256_FINGERPRINT) — needs the real signing-cert SHA-256 fingerprint (from the release keystore, or the Play App Signing console report) before the Digital Asset Links validator will pass.

Test plan

  • Fill in the real signing-cert SHA-256 fingerprint in assetlinks.json
  • Deploy the website so https://veil.app/.well-known/assetlinks.json resolves
  • Run the Digital Asset Links API validator against veil.app / com.veil.wallet and confirm it passes
  • On a real Android device/emulator, verify the passkey RP ID (veil.app) is accepted and a passkey created on web is usable from the app (or vice versa)

Closes Miracle656#447

Set up the Android equivalent of passkey domain binding via Digital
Asset Links, proving the app and website belong to the same entity,
self-serve and with no paid account required, unblocking real-device
passkey testing on Android ahead of iOS.
@Osuolale1
Osuolale1 requested a review from Miracle656 as a code owner July 29, 2026 19:26
@vercel

vercel Bot commented Jul 29, 2026

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@Osuolale1 is attempting to deploy a commit to the miracle656's projects Team on Vercel.

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@drips-wave

drips-wave Bot commented Jul 29, 2026

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@Osuolale1 Great news! 🎉 Based on an automated assessment of this PR, the linked Wave issue(s) no longer count against your application limits.

You can now already apply to more issues while waiting for a review of this PR. Keep up the great work! 🚀

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19. Android asset links

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