LoadLedger loads the ledger key info from disk and creates the corresponding LedgerKey.

LoadLedgerFromBytes loads the ledger key info from bytes and creates the corresponding LedgerKey.

LoadSoft loads the private key from disk and creates the corresponding SoftKey.

LoadSoftFromBytes loads the private key from bytes and creates the corresponding SoftKey.

ledger device should be connected.

SortTransferableInputsWithSigners sorts the inputs and signers based on the input's utxo ID.

To deduct transfer fee from total spend (output).

To create a new key SoftKey with a pre-loaded private key.

To create a new key SoftKey with a pre-defined private key.

Key defines methods for key manager interface.