kb-fediverse-webfinger-discovery

Name: kb-fediverse-webfinger-discovery
Rating: 5 (8 reviews)
Author: reiver

Background knowledge about reverse WebFinger discovery — finding a WebFinger address from an ActivityPub actor — based on FEP-2c59 (DRAFT status). Covers the `webfinger` property on actors, the forward vs reverse discovery problem, why `preferredUsername` is insufficient for reverse lookups, domain mismatch use cases, validation requirements (no-redirect string comparison), security considerations

8stars

Updated 3 months ago

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Reverse WebFinger Discovery (FEP-2c59) — Complete Reference

Overview

WebFinger (RFC 7033) is the standard mechanism for discovering an ActivityPub actor from a human-friendly address like user@domain.example. The forward direction (WebFinger to actor) is well-defined. The reverse direction (actor to WebFinger address) is not — and this causes real problems across the Fediverse.

FEP-2c59 (authored by Evan Prodromou, received 2024-01-04, status DRAFT) proposes adding a `webfi

[Description truncada. Veja o README completo no GitHub.]

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