/**
 * forked from https://github.com/EOSIO/eosjs/blob/master/src/eosjs-key-conversions.ts
 *
 * rewrite curves
 */
import { Key, KeyType } from "./eosjs-numeric";
import { ProjPointType, CurveFn } from "@noble/curves/abstract/weierstrass.js";
import { PublicKey, Signature } from "./eosjs-key-conversions";
/** Represents/stores a private key and provides easy conversion for use with `elliptic` lib */
export declare class PrivateKey {
    private key;
    private ec;
    constructor(key: Key, ec: CurveFn);
    /** Instantiate private key from an EOSIO-format private key */
    static fromString(keyString: string, ec?: CurveFn): PrivateKey;
    /** Export private key as `elliptic`-format private key */
    toPoint(): ProjPointType<bigint>;
    /** Get key type from key */
    getType(): KeyType;
    /** Retrieve the public key from a private key */
    getPublicKey(): PublicKey;
    /** Sign a message or hashed message digest with private key */
    sign(data: string | Uint8Array, shouldHash?: boolean, encoding?: BufferEncoding): Signature;
    /** Validate a private key */
    isValid(): boolean;
}