App-to-App (App2App) Authentication

[fungc-io]

Problem

Allow authenticating through another app under different publisher, which is installed in the same device. For example, in open-banking applications, granting Bank A app access to Bank B app to allow info exchange or authorize a transfer.

Appetite

4 weeks

Solution

The design is specified in: https://github.com/authgear/authgear-server/blob/main/docs/specs/app2app.md

Todo

• [x] Server side support
• [x] Project Config support
• [ ] SDK update
  • [x] Android SDK
  • [x] iOS SDK
  • [ ] JS SDK
  • [ ] Flutter SDK
  • [ ] Xamarin SDK
• [x] Allow configuration in the Portal