import { WechatPayModuleOptions } from '../interfaces/options.interface';
import { CallbackAuthResponse } from '../interfaces/response/auth/callback.auth.response.interface';
import { DecryptStrategy } from '../strategies/decrypt.strategy';
export declare class WechatPayAuthService {
    private readonly options;
    private readonly decryptStrategy;
    constructor(options: WechatPayModuleOptions, decryptStrategy: DecryptStrategy);
    /**
     * 微信支付回调认证
     * @param serial 商户证书序列号
     * @param nonce 随机字符串
     * @param timestamp 时间戳，精确到秒，字符串格式
     * @param signature 加密信息
     * @returns 认证结果
     */
    callback(serial: string, nonce: string, timestamp: string, signature: string): CallbackAuthResponse;
}