/// <reference types="node" />
import * as xml2js from 'xml2js';
import { ApiConfig } from '@tnwx/accesstoken';
export declare class CryptoKit {
    static xmlParser: xml2js.Builder;
    aesModel: string;
    token: string;
    appId: string;
    encodingAesKey: Buffer;
    iv: Buffer;
    msgSignature: string;
    timestamp: string;
    nonce: string;
    constructor(config: ApiConfig, msgSignature: string, timestamp: string, nonce: string);
    getMsgSignature(encryptedMsg: string): string;
    decrypt(echostr: string): string;
    /**
     *  微信消息解密
     *  @param encryptMsg 加密字符串
     */
    decryptMsg(encryptMsg: string): any;
    /**
     *  微信消息加密
     *  @param xmlMsg
     */
    encryptMsg(xmlMsg: string): string;
    KCS7Encoder(textLength: number): string;
    PKCS7Decoder(buff: Buffer): Buffer;
    parseXmlToObj(xml: string): any;
}