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Uncaught Error: KeyStore: Invalid mnemonic

See original GitHub issue

Upgrading from eth-lightwallet 2.5.4 to 3.0.x I am having the issue that I am unable to catch the error whenever a wrong mnemonic is passed to lightwallet.keystore.createVault.


    password: password,
    seedPhrase: seed, // Optionally provide a 12-word seed phrase
    hdPathString: "m/44'/60'/0'/0" // Optional custom HD Path String
  }, (err, ks) => {
    // Any code here is NEVER executed when the mnemonic is invalid
    if (err) throw new Error("Wrong password"); // Not triggered on invalid mnemonic
    console.log('test'); // Not triggered on invalid mnemonic

In this example, whenever the password is wrong, the callback does not retrieve an error keystore. It just displays an uncaught error in the console of the browser. I also tried placing a try - catch around it, but it still does not work.

This is the error shown in the browser:

Uncaught Error: KeyStore: Invalid mnemonic
    at KeyStore.init (keystore.js:75)
    at keystore.js:114
    at cb (keystore.js:352)
    at scrypt-async.js:518
    at scrypt-async.js:481
    at run (setImmediate.js:40)
    at runIfPresent (setImmediate.js:69)
    at onGlobalMessage (setImmediate.js:109)

Issue Analytics

  • State:open
  • Created 6 years ago
  • Comments:9 (1 by maintainers)

github_iconTop GitHub Comments

abhiram308commented, Apr 10, 2018

Hi @DalderupMaurice , this is due to the fact that init function throws error if invalid mnemonic appears. But that error is not caught by it’s calling function viz. createVault function. I have created a pull request for this (

For now, you can import “bitcore-mnemonic” library and prior to calling createVault, you can check if your mnemonic is correct using isValid function of this library.

abhiram308commented, Sep 7, 2018

@360disrupt Not any 12 random words make a correct mnemonic (not at least for Ethereum and Bitcoin chains). You can view the wordlist here. Again, you cannot arrange these words randomly yourself to make a valid mnemonic. This has steps to create one. You can visit to generate mnemonic for yourself. Or include this in your codebase to create wallets. Here you can see that eth-lightwallet uses it as well 😉

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