From 0d8cf151efdc135759b44bd5407e7e3caa1f3575 Mon Sep 17 00:00:00 2001
From: morizon <sidmorizon@outlook.com>
Date: Wed, 11 Oct 2023 21:04:36 +0800
Subject: [PATCH] fix: generateMnemonic words length (#3630)

---
 packages/engine/src/index.ts             | 12 +++++++++---
 packages/engine/src/secret/index.test.ts |  2 +-
 2 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/packages/engine/src/index.ts b/packages/engine/src/index.ts
index 92931aa0cf7..a7407e9ba5c 100644
--- a/packages/engine/src/index.ts
+++ b/packages/engine/src/index.ts
@@ -145,11 +145,11 @@ import type {
 import type { Token } from './types/token';
 import type { Wallet } from './types/wallet';
 import type { IUnsignedMessageBtc } from './vaults/impl/btc/types';
+import type VaultEvm from './vaults/impl/evm/Vault';
 import type {
   IEncodedTxEvm,
   IUnsignedMessageEvm,
 } from './vaults/impl/evm/Vault';
-import type VaultEvm from './vaults/impl/evm/Vault';
 import type VaultSol from './vaults/impl/sol/Vault';
 import type {
   IClientEndpointStatus,
@@ -206,7 +206,11 @@ class Engine {
 
   @backgroundMethod()
   generateMnemonic(): Promise<string> {
-    return Promise.resolve(bip39.generateMnemonic(256));
+    // 24 words
+    // return Promise.resolve(bip39.generateMnemonic(256));
+
+    // 12 words
+    return Promise.resolve(bip39.generateMnemonic());
   }
 
   @backgroundMethod()
@@ -372,7 +376,9 @@ class Engine {
     await this.validator.validatePasswordStrength(password);
 
     const [usedMnemonic] = await Promise.all([
-      this.validator.validateMnemonic(mnemonic || bip39.generateMnemonic(256)),
+      this.validator.validateMnemonic(
+        mnemonic || (await this.generateMnemonic()),
+      ),
       this.validator.validateHDWalletNumber(),
     ]);
 
diff --git a/packages/engine/src/secret/index.test.ts b/packages/engine/src/secret/index.test.ts
index 3f8efff0926..a3f781ec1f4 100644
--- a/packages/engine/src/secret/index.test.ts
+++ b/packages/engine/src/secret/index.test.ts
@@ -781,7 +781,7 @@ test('Basic mnemonic & seed tests', () => {
 });
 
 test('Mnemonic generation', () => {
-  const mnemonic = bip39.generateMnemonic(256);
+  const mnemonic = bip39.generateMnemonic();
   const rs = revealableSeedFromMnemonic(mnemonic, password);
   expect(
     mnemonicFromEntropy(rs.entropyWithLangPrefixed, password),