import { ExtendedPrivateKey } from './types';
export declare class PrivateKey implements ExtendedPrivateKey {
    readonly priv: Uint8Array;
    readonly chainCode: Uint8Array;
    /**
     *
     * @param priv generated keypair 0->32 private key 32->n public key
     * @param chainCode new HMAC hash with new key
     */
    constructor(priv: Uint8Array, chainCode: Uint8Array);
    /**
     *
     * @param seedSrc result of Bip39.mnemonicToSeed
     * @returns instance of PrivateKey
     * @throws InvalidSeedLengthError
     */
    static fromSeed(seedSrc: Uint8Array | string): PrivateKey;
    /**
     *
     * @returns slice(0, 32) of current priv for new seed for next derived priv
     */
    seed(): Uint8Array;
    /**
     \* @remarks index: current derivation path item ie: 1729'
     * @returns derivation path child of original private key pair
     */
    derive(index: number): PrivateKey;
    /**
     * @param path array of numbers pre adjusted for hardened paths ie: 44' -> 2^31 + 44
     * @returns final child of full derivation path private key pair
     */
    derivePath(path: Iterable<number>): PrivateKey;
}