pub fn decode_json_file(
    path: impl AsRef<Path>,
    passphrase: Option<&str>
) -> Result<PairSigner<GearConfig, Pair>>
Expand description

Decode pair from json file.

@WARNING: THIS WILL ONLY BE SECURE IF THE keystore IS SECURE. when you have NO PASSWORD, If it can be got by an attacker then they can also get your key.