Clear DefinitionsOAuth3 for DIDs
1 min read
Pronunciation
[oh-auth three for dee-eye-deez]
Analogy
Like upgrading from a single building keycard system to a blockchain‑backed identity wallet that you control, letting you grant and revoke access without a central authority.
Definition
An extension of OAuth designed to integrate Decentralized Identifiers (DIDs) for user-centric, self‑sovereign authentication and authorization flows, leveraging verifiable credentials instead of centralized tokens.
Key Points Intro
OAuth3 merges OAuth paradigms with decentralized identity to give users control over their credentials.
Key Points
DID-based tokens: Uses verifiable credentials in place of JWTs.
User control: Users manage authorizations in their DID wallet.
Selective disclosure: Grants minimal required claims.
Decentralized revocation: Revokes via on‑chain credential registries.
Example
A dApp requests a verifiable email credential via OAuth3; the user’s DID wallet issues a signed proof without exposing other personal data.
Technical Deep Dive
OAuth3 flow: client redirects user to DID wallet, wallet presents credential request as verifiable presentation request, user consents, wallet signs a VP token per W3C VC Data Model, and client verifies via DID method and credential status registry.
Security Warning
Malicious RPs could request overly broad claims; wallets must enforce fine‑grained consent.
Caveat
Standards still emerging; interoperability across DID methods may vary.
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