Use rdf-canonize directly to use RDFC-1.0 algorithm.

Author: dlongley

CHANGELOG.md

@@ -1,5 +1,10 @@
 # @digitalbazaar/ecdsa-rdfc-2019-cryptosuite Changelog
 
+## 1.1.0 - 2024-08-dd
+
+### Changed
+- Use `rdf-canonize` directly to use `RDFC-1.0` algorithm.
+
 ## 1.0.1 - 2023-11-13
 
 ### Fixed

lib/canonize.js

@@ -1,12 +1,21 @@
 /*!
- * Copyright (c) 2023 Digital Bazaar, Inc. All rights reserved.
+ * Copyright (c) 2023-2024 Digital Bazaar, Inc. All rights reserved.
  */
+import * as rdfCanonize from 'rdf-canonize';
 import jsonld from 'jsonld';
 
 export async function canonize(input, options) {
-  return jsonld.canonize(input, {
-    algorithm: 'URDNA2015',
+  // convert to RDF dataset and do canonicalization
+  options = {
+    algorithm: 'RDFC-1.0',
     format: 'application/n-quads',
+    base: null,
+    safe: true,
     ...options
-  });
+  };
+  const opts = {...options, produceGeneralizedRdf: false};
+  delete opts.format;
+  opts.produceGeneralizedRdf = false;
+  const dataset = await jsonld.toRDF(input, opts);
+  return rdfCanonize.canonize(dataset, options);
 }

package.json

@@ -15,12 +15,13 @@
   ],
   "dependencies": {
     "@digitalbazaar/ecdsa-multikey": "^1.6.0",
-    "jsonld": "^8.3.1"
+    "jsonld": "^8.3.1",
+    "rdf-canonize": "^4.0.1"
   },
   "devDependencies": {
     "@digitalbazaar/data-integrity": "^2.0.0",
     "@digitalbazaar/data-integrity-context": "^2.0.0",
-    "@digitalbazaar/multikey-context": "^1.0.0",
+    "@digitalbazaar/multikey-context": "^2.0.1",
     "@digitalbazaar/security-document-loader": "^2.0.0",
     "c8": "^7.11.3",
     "chai": "^4.3.6",

test/Ecdsa2019Cryptosuite.spec.js

@@ -1,5 +1,5 @@
 /*!
- * Copyright (c) 2023 Digital Bazaar, Inc. All rights reserved.
+ * Copyright (c) 2023-2024 Digital Bazaar, Inc. All rights reserved.
  */
 import {expect} from 'chai';
 
@@ -31,7 +31,7 @@ describe('Ecdsa2019Cryptosuite', () => {
   });
 
   describe('canonize()', () => {
-    it('should canonize using URDNA2015 w/ n-quads', async () => {
+    it('should canonize using RDFC-1.0 w/ n-quads', async () => {
       const unsignedCredential = JSON.parse(JSON.stringify(credential));
 
       let result;
@@ -40,6 +40,7 @@ describe('Ecdsa2019Cryptosuite', () => {
         result = await ecdsa2019Cryptosuite.canonize(
           unsignedCredential, {documentLoader});
       } catch(e) {
+        console.log('e', e);
         error = e;
       }