/// <reference types="node" />
import { PrivateKey } from "..";
/**
 * TxUtility provides transaction
 * processing functions to be used
 * by other modules.
 *
 * @class TxUtility
 */
export default class TxUtility {
    /**
     * Returns the byte equivalent of
     * a given transaction but does not
     * include the transaction `hash` and
     * `sig` fields
     *
     * @param {Transaction} tx The transaction
     * @returns {Buffer}
     * @memberof TxUtility
     */
    getBytesNoHashAndSig(tx: Transaction): Buffer;
    /**
     * Compute and return the hash of a transaction
     *
     * @param {Transaction} tx The transaction
     * @param {string} [prefix="0x"] Add a prefix to the hash
     * @returns {string}
     * @memberof TxUtility
     */
    hash(tx: Transaction, prefix?: string): string;
    /**
     * Sign and return a signature of the
     * transaction.
     *
     * @param {Transaction} tx The transaction
     * @param {PrivateKey} sk The private key to use for signing
     * @param {string} [prefix="0x"] A prefix to add to the signature
     * @returns {string} An hex string
     * @memberof TxUtility
     */
    sign(tx: Transaction, sk: PrivateKey, prefix?: string): string;
}