From 6ac29fdae57f46024c1daf660e4583c6a8d37e24 Mon Sep 17 00:00:00 2001
From: Wes Biggs <wes.biggs@amplica.io>
Date: Fri, 30 Aug 2024 16:20:35 -0500
Subject: [PATCH] Minimal code for verification

---
 verify.js | 55 ++++++++++---------------------------------------------
 1 file changed, 10 insertions(+), 45 deletions(-)

diff --git a/verify.js b/verify.js
index 0f322b7..1884855 100644
--- a/verify.js
+++ b/verify.js
@@ -1,31 +1,20 @@
-import * as Ed25519Multikey from "@digitalbazaar/ed25519-multikey";
 import { cryptosuite } from "@digitalbazaar/eddsa-rdfc-2022-cryptosuite";
 import { DataIntegrityProof } from "@digitalbazaar/data-integrity";
 import * as vc from '@digitalbazaar/vc';
-import jsig from "jsonld-signatures";
-const { extendContextLoader } = jsig;
-import jsonld from "jsonld";
-import dataIntegrityContext from "@digitalbazaar/data-integrity-context";
 import * as credentialsContext from "@digitalbazaar/credentials-context";
-import emailCredential from "./docs/email.json" assert { type: "json" };
 import { CachedResolver } from "@digitalbazaar/did-io";
 import * as didWeb from "@digitalbazaar/did-method-web";
 
-const nodeDocumentLoader = jsonld.documentLoaders.node();
+// The credential we're verifying
+import emailCredential from "./docs/email.json" assert { type: "json" };
 
-const suite = new DataIntegrityProof({ signer: null, cryptosuite });
+const suite = new DataIntegrityProof({ cryptosuite });
 
 const loaderCache = {};
 function addToCache(options) {
   loaderCache[options.documentUrl] = { ...options };
 }
-
-addToCache({
-  document: dataIntegrityContext.CONTEXT,
-  documentUrl: dataIntegrityContext.CONTEXT_URL,
-});
-
-["v1", "v2", "undefined-terms-v2"].forEach((shortName) => {
+["v2", "undefined-terms-v2"].forEach((shortName) => {
   const contextMetadata = credentialsContext.named.get(shortName);
   addToCache({
     document: contextMetadata.context,
@@ -33,46 +22,22 @@ addToCache({
   });
 });
 
-let didResolver = new CachedResolver();
+const didResolver = new CachedResolver();
 didResolver.use(didWeb.driver());
 
-let documentLoader = extendContextLoader(async (url) => {
+async function documentLoader(url) {
   if (url.startsWith("did:")) {
-    const fragmentIndex = url.lastIndexOf("#");
-    const baseDid =
-          fragmentIndex === -1 ? url : url.substring(0, fragmentIndex);
-    const didDocument = await didResolver.get({ did: baseDid });
-    if (didDocument) {
-      let document = didDocument;
-      // We have a DID document, but might only need a key identified by fragment
-      
-      if (fragmentIndex !== -1) {
-        document = findAssertionMethod(
-          didDocument,
-          url.substring(fragmentIndex + 1),
-        );
-      }
-      return {document};
-    }
+    const didDocument = await didResolver.get({ did: url });
+    return { document: didDocument }
   }
   return loaderCache[url];
-});
+}
   
     
 const output = await vc.verifyCredential({
   credential: emailCredential,
   suite,
-  documentLoader,
-  purpose: {
-    validate: (proof) => {
-      return {
-        valid: proof.proofPurpose === "assertionMethod",
-      };
-    },
-    match: (proof, options /*{ document, documentLoader }*/) => {
-      return true;
-    },
-  }
+  documentLoader
 });
 
 console.log(JSON.stringify(output, null, 2));