/// <reference types="node" />
import PublicKey from "./PublicKey";
export default class PrivateKey {
    private privKey;
    constructor(privKey: Buffer);
    static fromSecretKey(secretKey: Buffer): PrivateKey;
    toBytes(): Buffer;
    toPublicKey(): PublicKey;
    sign(data: Buffer): Buffer;
    verify(signature: Buffer, message: Buffer): any;
}