import { Secret, EncryptedState } from '../../Secret';
/**
 * A private key. Accepts hex, WIF, raw bytes, or encrypted state. Supports encryption.
 *
 * @example
 * ```ts
 * const pk = new PrivateKey('deadbeef...');
 * const pk = new PrivateKey('5HueCGU8rMjxEXxiPuD5BDku4MkFqeZyd4dZ1jvhTVqvbTLvyTJ'); // WIF
 * pk.publicKey; // compressed public key bytes
 * pk.getWif();  // export as WIF
 * ```
 */
export declare class PrivateKey extends Secret {
    private readonly wifVersion;
    /**
     * @param source - Hex, WIF, `Uint8Array`, or {@link EncryptedState}.
     * @param wifVersion - WIF version byte. Defaults to `128` (Bitcoin mainnet).
     * @throws {@link InvalidPrivateKeyError} if the format is invalid.
     */
    constructor(source: string | Uint8Array | EncryptedState, wifVersion?: number);
    /** The raw private key bytes. */
    get raw(): Uint8Array;
    /** The private key as hex. */
    get hex(): string;
    /** The corresponding compressed public key. */
    get publicKey(): Uint8Array;
    /**
     * Exports the private key as a WIF string.
     *
     * @param version - WIF version byte. Defaults to the version set in the constructor.
     */
    getWif(version?: number): string;
    /** Zeros out the private key in memory. */
    zeroize(): void;
}