Support logo URI in OID4VC metadata + update README

Signed-off-by: Alexander Shenshin <alexander.shenshin@dsr-corporation.com>

Author: AlexanderShenshin

README.md

@@ -7,7 +7,7 @@
 
 The **Heka Identity Platform** is a ready-to-use decentralized identity (aka Self-Sovereign Identity or SSI) solution for the Hiero ecosystem. The project delivers a complete set of applications and tools that enable issuance, management, and verification of verifiable credentials using global identity standards, while serving as a baseline reference implementation for Hiero / Hedera-based identity solutions.
 
-The Heka Identity Platform is intended to accelerate adoption of decentralized identity within the Hiero ecosystem and provide a practical, standards-aligned example for developers, integrators, and community members.
+The Heka Identity Platform is intended to speed up adoption of decentralized identity within the Hiero ecosystem and provide a practical, standards-aligned example for developers, integrators, and community members.
 
 ## Core Components
 
@@ -26,6 +26,12 @@ The platform supports a wide range of global decentralized identity standards, i
 - **Credential Formats**: W3C Verifiable Credentials, SD-JWT VC, ISO mDL, Hyperledger AnonCreds
 - **DID Methods**: Multiple DID methods, including Hiero / Hedera-based DIDs
 
+## Demos
+
+Please see the [demo folder](./demo) to explore demos showcasing various decentralized identity use cases implemented with Heka Identity Platform.
+
+- [Agent-to-Agent (A2A) + OID4VP integration](./demo/a2a-oid4vp): A demo showcasing OID4VP-based authentication for AI agents leveraging Agent2Agent (A2A) protocol
+
 ## Governance
 
 The Heka Identity Platform operates under the governance of the **Hiero Technical Steering Committee (TSC)**, in alignment with existing Hiero project policies.

demo/a2a-oid4vp/README.md

@@ -1,13 +1,11 @@
-# Agent-to-Agent (A2A) + OID4V integration demo
+# Agent-to-Agent (A2A) + OID4VP integration demo
 
 This demo is built around one of the relevant use cases for Agentic AI identity – VC-based authentication for interaction with Agents.
 It leverages [Agent-to-Agent (A2A)](https://a2a-protocol.org/latest/specification/) and [OpenID for Verifiable Presentations](https://openid.net/specs/openid-4-verifiable-presentations-1_0.html) protocols, specifically demonstrating how to use OID4VP for A2A Task Authentication by implementing [OID4VP In-Task Authentication extension for A2A](https://github.com/DSRCorporation/a2a-oid4vp-in-task-auth-extension/blob/main/v1/spec.md).
 
 The demo is built using [Genkit](https://genkit.dev/) with the OpenAI API.
 Heka Identity Platform is used as a decentralized identity wallet / agent providing support for OID4VP (for both Holder and Verifier parties).
 
-This is a demo code not intended for production-quality usage.
-
 ## Scenario and Demo Flow
 
 This demo showcases how an AI agent can request additional authentication from a user using the **OID4VP** protocol and how Heka Identity Platform enables such capabilities.

heka-wallet/app/src/credentials/mappers/credential-display.ts

@@ -11,6 +11,7 @@ import {
   CredentialOverlay,
   RemoteOCABundleResolver,
 } from '@hyperledger/aries-oca/build/legacy'
+import { ImageInfo } from '@sphereon/oid4vci-common'
 
 import { agencyProviderURL, fallbackDisplay } from '../../config'
 import { OpenId4VcCredentialMetadata } from '../metadata'
@@ -46,7 +47,7 @@ export function getSdJwtCredentialDisplay(
 
       if (openidCredentialDisplay.logo) {
         credentialDisplay.logo = {
-          url: openidCredentialDisplay.logo.url,
+          url: getImageInfoLogoUrl(openidCredentialDisplay.logo),
           altText: openidCredentialDisplay.logo.alt_text,
         }
       }
@@ -108,7 +109,7 @@ export function getW3cCredentialDisplay(
 
       if (openidCredentialDisplay.logo) {
         credentialDisplay.logo = {
-          url: openidCredentialDisplay.logo.url,
+          url: getImageInfoLogoUrl(openidCredentialDisplay.logo),
           altText: openidCredentialDisplay.logo.alt_text,
         }
       }
@@ -196,7 +197,7 @@ export function getMdocCredentialDisplay(
 
       if (openidCredentialDisplay.background_image) {
         credentialDisplay.backgroundImage = {
-          url: openidCredentialDisplay.background_image.url,
+          url: getImageInfoLogoUrl(openidCredentialDisplay.background_image),
           altText: openidCredentialDisplay.background_image.alt_text,
         }
       }
@@ -344,6 +345,10 @@ function findDisplay<Display extends { locale?: string }>(display?: Display[]):
   return item
 }
 
+function getImageInfoLogoUrl(logo: ImageInfo): string | undefined {
+  return logo.url ?? (logo.uri as string | undefined)
+}
+
 function getW3cIssuerDisplay(
   credential: W3cCredentialJson,
   openId4VcMetadata?: OpenId4VcCredentialMetadata | null
@@ -398,7 +403,7 @@ export function getOpenId4VcIssuerDisplay(
 
       if (openidIssuerDisplay.logo) {
         issuerDisplay.logo = {
-          url: openidIssuerDisplay.logo?.url,
+          url: getImageInfoLogoUrl(openidIssuerDisplay.logo),
           altText: openidIssuerDisplay.logo?.alt_text,
         }
       }
@@ -408,7 +413,7 @@ export function getOpenId4VcIssuerDisplay(
     const openidCredentialDisplay = findDisplay(openId4VcMetadata.credential.display)
     if (openidCredentialDisplay && !issuerDisplay.logo && openidCredentialDisplay.logo) {
       issuerDisplay.logo = {
-        url: openidCredentialDisplay.logo?.url,
+        url: getImageInfoLogoUrl(openidCredentialDisplay.logo),
         altText: openidCredentialDisplay.logo?.alt_text,
       }
     }

heka-wallet/app/src/credentials/useOpenIdHandlers.ts

@@ -254,6 +254,11 @@ export const useOpenIdHandlers = () => {
         display: resolvedCredentialOffer.metadata.credentialIssuerMetadata.display,
       })
 
+      agent.config.logger.info('Resolved openid issuer metadata', {
+        display: resolvedCredentialOffer.metadata.credentialIssuerMetadata?.display,
+        issuerId: openId4VcMetadata.issuer.id,
+      })
+
       setOpenId4VcCredentialMetadata(record, openId4VcMetadata)
 
       return record