George Padayatti

George Padayatti

Partner & Head of DevOps

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AMA: building EUDI Wallet developer tools — ask us anything

We're the team behind iGrant.io. Last week we shipped three free, browser-based developer tools for the EUDI Wallet ecosystem, timed to the ETSI EAA Plugtests:

mdoc CBOR Decoder https://docs.igrant.io/docs/devt...

JWT / SD-JWT Decoder https://docs.igrant.io/docs/devt...

QR Code Generator https://docs.igrant.io/docs/devt...

EUDI passwordless login: how SD-JWT VC quietly replaces password forms

One of the cleaner real-world wins from EUDI Wallet adoption: login forms disappear. The wallet presents a verified attribute (email, PID, or whatever your relying party trusts) and the password field is gone.

We documented the flow we run:

https://docs.igrant.io/docs/eudi...

Underneath, it's an OpenID4VP request with a DCQL query, the wallet builds an SD-JWT VP with key-binding, the verifier checks the signature, you're in.

Why our decoders run 100% in-browser (and why it matters for identity)

A lot of "online decoders" upload your token to a server. For credentials that's a real problem even test data often contains personal claims, real x5c chains, and signatures tied to live keys.

We wrote our three tools as pure browser apps. Paste, drop, or upload nothing leaves your machine, no server logs, no analytics on the payloads.

mdoc CBOR Decoder https://docs.igrant.io/docs/devt...

JWT / SD-JWT Decoder https://docs.igrant.io/docs/devt...

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