import { Secp256k1CryptoClient } from '@airgap/coinlib-core/protocols/Secp256k1CryptoClient';
import { BitcoinProtocol } from '../../v1';
import { BitcoinJS } from '../types/bitcoinjs';
export declare class BitcoinCryptoClient extends Secp256k1CryptoClient {
    private readonly protocol;
    private readonly bitcoinjs;
    constructor(protocol: BitcoinProtocol, bitcoinjs: BitcoinJS);
    signMessage(message: string, keypair: {
        privateKey: string;
    }): Promise<string>;
    verifyMessage(message: string, signature: string, publicKey: string): Promise<boolean>;
}