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iherman · Jun 24, 2024 · 4614c3a · 4614c3a
1 parent 7ab78a8
commit 4614c3a
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Showing 3 changed files with 9 additions and 2 deletions.
diff --git a/dist/index.js b/dist/index.js
@@ -120,7 +120,7 @@ async function embedProofGraph(dataset, keyData, anchor) {
     // Adding the chain statements, if required
     if (isKeyChain) {
         for (let i = 1; i < chain.length; i++) {
-            const q = quad(chain[i].proofId, (0, proof_utils_1.sec_prefix)("previousProof"), chain[i - 1].proofId, chain[i].graph);
+            const q = quad(chain[i].proofId, proof_utils_1.sec_previousProof, chain[i - 1].proofId, chain[i].graph);
             retval.add(q);
         }
     }
@@ -182,6 +182,11 @@ async function verifyEmbeddedProofGraph(dataset, anchor) {
             // neither it is part of any proof graphs
             continue;
         }
+        else if (q.predicate.equals(proof_utils_1.sec_previousProof)) {
+            // Per the cryptosuite specifications, the "previous proof" statement is not part of the "proof options", ie,
+            // should not be used for the generation of the final proof. It was not used to generate the proof graph when signing.
+            continue;
+        }
         else if (q.graph.termType === "DefaultGraph") {
             dataStore.add(q);
         }

diff --git a/dist/lib/proof_utils.d.ts b/dist/lib/proof_utils.d.ts
@@ -32,6 +32,7 @@ export declare const sec_expires: rdf.NamedNode;
 export declare const sec_revoked: rdf.NamedNode;
 export declare const sec_created: rdf.NamedNode;
 export declare const xsd_datetime: rdf.NamedNode;
+export declare const sec_previousProof: rdf.NamedNode;
 /**
  * Generate a (separate) proof graph, per the DI spec. The signature is stored in
  * [multibase format](https://www.w3.org/TR/vc-data-integrity/#multibase-0), using base64url encoding.

diff --git a/dist/lib/proof_utils.js b/dist/lib/proof_utils.js
@@ -10,7 +10,7 @@
  * @packageDocumentation
  */
 Object.defineProperty(exports, "__esModule", { value: true });
-exports.verifyProofGraphs = exports.generateAProofGraph = exports.xsd_datetime = exports.sec_created = exports.sec_revoked = exports.sec_expires = exports.sec_verificationMethod = exports.sec_assertionMethod = exports.sec_authenticationMethod = exports.sec_proofPurpose = exports.sec_publicKeyMultibase = exports.sec_publicKeyJwk = exports.sec_proofValue = exports.sec_di_proof = exports.sec_proof = exports.rdf_json = exports.rdf_type = exports.xsd_prefix = exports.rdf_prefix = exports.sec_prefix = void 0;
+exports.verifyProofGraphs = exports.generateAProofGraph = exports.sec_previousProof = exports.xsd_datetime = exports.sec_created = exports.sec_revoked = exports.sec_expires = exports.sec_verificationMethod = exports.sec_assertionMethod = exports.sec_authenticationMethod = exports.sec_proofPurpose = exports.sec_publicKeyMultibase = exports.sec_publicKeyJwk = exports.sec_proofValue = exports.sec_di_proof = exports.sec_proof = exports.rdf_json = exports.rdf_type = exports.xsd_prefix = exports.rdf_prefix = exports.sec_prefix = void 0;
 const n3 = require("n3");
 const uuid_1 = require("uuid");
 const canonify_1 = require("@truestamp/canonify");
@@ -42,6 +42,7 @@ exports.sec_expires = (0, exports.sec_prefix)('expires');
 exports.sec_revoked = (0, exports.sec_prefix)('revoked');
 exports.sec_created = (0, exports.sec_prefix)('created');
 exports.xsd_datetime = (0, exports.xsd_prefix)('dateTime');
+exports.sec_previousProof = (0, exports.sec_prefix)("previousProof");
 /**
  * The proof option graph is the collection of all quads in a proof graph, except the proof
  * value. The hash of this graph is combined with the hash of the original data.