[Bug]: Can't pass in empty passphrase when creating new keyring instance

[xyz1hang]

Is there an existing issue for this?

• I have searched the existing issues

What happened?

Unable to create a keyring instance that allows empty passphrase userinput.

Trying to create a keyring instance with BackendFile but it seems that there's no way to pass in empty passphrase

	emptyPassphraseReader := strings.NewReader("")

	kr, err := keyring.New(sdktypes.KeyringServiceName(), keyring.BackendFile, wallet.KeyringDir, emptyPassphraseReader, cdc)
	if err != nil {
		...
	}

The SDK always try to read it 3 times and ended up with io.EOF (which is also an "error") then exit with ErrMaxPassPhraseAttempts

Cosmos SDK Version

0.50.9

How to reproduce?

see description

[julienrbrt]

Hey! Where are you reading that an empty passphrase is supported?
If you want to use a backend file you always need a passphrase. Otherwise, you should use the test backend.

[xyz1hang]

Hey! Where are you reading that an empty passphrase is supported?
If you want to use a backend file you always need a passphrase. Otherwise, you should use the test backend.

@julienrbrt
Hey, I have a wallet on this Cosmo based chain https://axiomechain.org/

When I created the wallet it didn't ask for a passphrase but only a 5 digits pin.

I am trying to restore the wallet using seed phrase and Cosmo SDK, but the sdk requires password to be at least 8 characters

Could you point me to the right direction please 🥺

[julienrbrt]

You could use the keys add --recover command from the node binary.
Otherwise in Go you just need to change the backend file to backend test. The keyring password is btw unrelated to the extra Word in mnemonics.