Is there way to recognize wrong passphrase? about bip38 HOT 3 CLOSED

Under https://github.com/cryptocoinjs/bip38#decryptencryptedkey-passhprase, this:

note: To check for an invalid password, you'll want to generate the public address from the output of the decrypt() function. If it doesn't equal the expected address or the address checksum, then chances are, it's an invalid password. The reason that this logic was not included is because it would have required a lot of dependencies: ECKey and Address. Currently, ECKey is pretty heavy on dependencies.

i.e....

1. Generate the WIF output from decrypt().
2. Compute address from WIF
3. Verify address checksum matches checksum on the encrypted key (input to decrypt()).

from bip38.

I get it now, thanks!

something like this:

let hex = Bitcoin.base58check.decode(encryptedKey),
  checksum = Bitcoin.crypto.sha256(Bitcoin.crypto.sha256(address)),
  passwordWrong = checksum[0] != hex[3] || checksum[1] != hex[4] || checksum[2] != hex[5] || checksum[3] != hex[6]

console.log(`password is ${ passwordWrong ? 'incorrect' : 'correct' }`)

from bip38.

Closing since this appears to be resolved.

from bip38.