feat: vat-safe denomHash using noble sha256

 - @noble/hashes dependency
 - unit test using bundle

packages/orchestration/package.json

@@ -33,8 +33,8 @@
  },
  "homepage": "https://github.com/Agoric/agoric-sdk#readme",
  "dependencies": {
- "@agoric/async-flow": "^0.1.0",
  "@agoric/assert": "^0.6.0",
+ "@agoric/async-flow": "^0.1.0",
  "@agoric/cosmic-proto": "^0.4.0",
  "@agoric/ertp": "^0.16.2",
  "@agoric/internal": "^0.3.2",
@@ -48,9 +48,12 @@
  "@agoric/zoe": "^0.26.2",
  "@agoric/zone": "^0.2.2",
  "@endo/base64": "^1.0.5",
+ "@endo/bundle-source": "3.2.3",
  "@endo/far": "^1.1.2",
+ "@endo/import-bundle": "1.1.2",
  "@endo/marshal": "^1.5.0",
- "@endo/patterns": "^1.4.0"
+ "@endo/patterns": "^1.4.0",
+ "@noble/hashes": "^1.4.0"
  },
  "devDependencies": {
  "@chain-registry/client": "^1.47.4",

packages/orchestration/src/utils/denomHash.js

@@ -0,0 +1,22 @@
+// @ts-check
+import { sha256 } from '@noble/hashes/sha256';
+import { bytesToHex } from '@noble/hashes/utils';
+
+/**
+ * cf. https://tutorials.cosmos.network/tutorials/6-ibc-dev/
+ *
+ * @param {object} opts
+ * @param {string} [opts.portId]
+ * @param {string} [opts.channelId] required unless `path` is supplied
+ * @param {string} [opts.path] alternative to portId, channelId
+ * @param {string} opts.denom base denom
+ */
+export const denomHash = ({
+ portId = 'transfer',
+ channelId = /** @type {string | undefined} */ (undefined),
+ path = `${portId}/${channelId}`,
+ denom,
+}) => {
+ const h = sha256.create().update(`${path}/${denom}`).digest();
+ return bytesToHex(h).toUpperCase();
+};

packages/orchestration/test/utils/denomHash.test.ts

@@ -0,0 +1,18 @@
+import test from '@endo/ses-ava/prepare-endo.js';
+
+import bundleSource from '@endo/bundle-source';
+import { importBundle } from '@endo/import-bundle';
+import { createRequire } from 'node:module';
+import { denomHash } from '../../src/utils/denomHash.js';
+
+const nodeRequire = createRequire(import.meta.url);
+
+test('compartment use of denomHash', async t => {
+ const bundle = await bundleSource(nodeRequire.resolve('./denomHashEx.js'));
+ const { length } = JSON.stringify(bundle);
+ t.log('bundle length', length);
+ const expected = denomHash({ channelId: 'channel-0', denom: 'uatom' });
+
+ const { denomHashExample } = await importBundle(bundle);
+ t.deepEqual(denomHashExample(), expected);
+});

packages/orchestration/test/utils/denomHashEx.js

@@ -0,0 +1,6 @@
+import { denomHash } from '../../src/utils/denomHash.js';
+
+export const denomHashExample = () => {
+ const h = denomHash({ channelId: 'channel-0', denom: 'uatom' });
+ return h;
+};