validate mnemonic on restore

RunOnFlux · Dec 22, 2023 · ab9838b · ab9838b
1 parent f288628
commit ab9838b
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Showing 2 changed files with 14 additions and 1 deletion.
diff --git a/src/lib/wallet.ts b/src/lib/wallet.ts
@@ -47,6 +47,10 @@ export function generateMnemonic(strength: 128 | 256 = 256): string {
   return bip39.generateMnemonic(wordlist, strength);
 }
 
+export function validateMnemonic(mnemonic: string): boolean {
+  return bip39.validateMnemonic(mnemonic, wordlist);
+}
+
 // returns xpub of hardened derivation path for a particular coin
 export function getMasterXpub(
   mnemonic: string,

diff --git a/src/screens/Restore/Restore.tsx b/src/screens/Restore/Restore.tsx
@@ -23,7 +23,11 @@ import { blockchains } from '@storage/blockchains';
 
 const CryptoJS = require('crypto-js');
 
-import { getMasterXpriv, getMasterXpub } from '../../lib/wallet';
+import {
+  getMasterXpriv,
+  getMasterXpub,
+  validateMnemonic,
+} from '../../lib/wallet';
 
 import { setSeedPhrase, setSSPInitialState } from '../../store/ssp';
 import { setXpubKeyIdentity, setXprivKeyIdentity } from '../../store';
@@ -113,6 +117,11 @@ function Restore({ navigation }: Props) {
       displayMessage('error', t('cr:err_invalid_seed'));
       return;
     }
+    const isValid = validateMnemonic(newSeedPhrase);
+    if (!isValid) {
+      displayMessage('error', t('cr:err_invalid_seed'));
+      return;
+    }
     if (password !== passwordConfirm) {
       displayMessage('error', t('cr:err_pins_no_match'));
     } else if (password.length < 4) {