unt.toKey(\"passphrase\"); toKeyString(password, opts) Generate key buy passphrase and options. Return in JSON format. Parameters: Name Type Description password Password Provided password. opts KeyOptions Key options. Returns: JSON stringify Key. Type String Example var key = account.toKeyString(\"passphrase\"); fromKey(input, password, nonStrict) Restore account from key and passphrase. Parameters: Name Type Description input Key Key Object. password Password Provided password. nonStrict Boolean Strict с