hdnode: allow custom path

.github/workflows/test.yml

@@ -12,23 +12,15 @@ jobs:
     name: Node ${{ matrix.node }}
     strategy:
       matrix:
-        os: [ubuntu-latest]
-        node: [8, 10, 12, 14]
+        node: [14,16,18]
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
 
-      - uses: actions/setup-node@v2
+      - uses: actions/setup-node@v3
         with:
           node-version: ${{ matrix.node }}
-
-      - name: Cache Node.js modules
-        uses: actions/cache@v2
-        with:
-          path: ~/.npm
-          key: ${{ runner.OS }}-node-${{matrix.node}}-${{ hashFiles('**/package-lock.json') }}
-          restore-keys: |
-            ${{ runner.OS }}-node-
+          cache: 'npm'
 
       - name: Install Dependencies
         run: npm ci

src/hdnode.ts

@@ -22,10 +22,10 @@ export interface HDNode {
 
 export namespace HDNode {
     /** create node from mnemonic words */
-    export function fromMnemonic(words: string[]) {
+    export function fromMnemonic(words: string[], path=VET_DERIVATION_PATH) {
         // normalize words to lowercase
         const joinedWords = words.join(' ').toLowerCase()
-        const node = HD.fromMnemonic(joinedWords).derivePath(VET_DERIVATION_PATH)
+        const node = HD.fromMnemonic(joinedWords).derivePath(path)
         return createHDNode(node)
     }
 

tests/crypto.test.ts

@@ -172,4 +172,23 @@ describe('mnemonic', () => {
         const node2 = HDNode.fromMnemonic(words.map(w => w.toUpperCase()))
         expect(node.address === node2.address)
     })
+
+    it('hdNode custom path', () => {
+        const eth_path = `m/44'/60'/0'/0`
+        const node = HDNode.fromMnemonic(words, eth_path)
+        // test case generated via https://iancoleman.io/bip39/
+        const addresses = [
+            '4473c83a6a9661ab9cdb6b07749998ad9e77a580',
+            '858531457566df8b60cf1355b54e48e04e36be33',
+            '40b5aa8b54aafaf6323b58ce5737ce320d92cf99',
+            '988f3af24dca0a3080f9ab5a1f57d706c6b8f011',
+            'ffb0e35ba82856f8f5b7a57104c38a73f3ceff03'
+        ]
+        for (let i = 0; i < 5; i++) {
+            const child = node.derive(i)
+            expect(address.fromPublicKey(child.publicKey).slice(2)).equal(addresses[i])
+            expect(child.address).equal('0x' + addresses[i])
+            expect(secp256k1.derivePublicKey(child.privateKey!).toString('hex')).equal(child.publicKey.toString('hex'))
+        }
+    })
 })