/// <reference types="node" />
/// <reference types="node" />
import { KeyPairKeyObjectResult } from 'crypto';
export declare namespace ECDSA {
    const DefaultCurveSecp256k1 = "secp256k1";
    const DefaultEncodeFormat = "pem";
    const DefaultPriKeyEncodeType = "pkcs8";
    const DefaultPubKeyEncodeType = "spki";
    function NewKeyPair(curve?: string): KeyPairKeyObjectResult;
    function Sign(data: any, certificate: string, hashAlgo: string, passphrase?: string | Buffer): Buffer;
    function Verify(data: any, certificate: string, sig: Buffer, hashAlgo: string): boolean;
}