import { WechatPayModuleOptions } from '../interfaces/options.interface';
export declare class DecryptStrategy {
    private readonly options;
    constructor(options: WechatPayModuleOptions);
    /**
     * 解密 ciphertext字符  AEAD_AES_256_GCM算法策略实现
     * @param ciphertext 数据密文
     * @param associated_data 附加数据
     * @param nonce 随机串
     * @returns 解密结果
     */
    AEAD_AES_256_GCM<T>(ciphertext: string, associated_data: string, nonce: string): T;
}