/**
 * CheckMacEncoder
 *
 * Responsible for generating and verifying the CheckMacValue (checksum)
 * for ECPay Logistics API.
 *
 * Note: ECPay Logistics uses MD5.
 */
export declare class CheckMacEncoder {
    private readonly hashKey;
    private readonly hashIV;
    constructor(hashKey: string, hashIV: string);
    /**
     * Encode the payload by adding CheckMacValue.
     */
    encodePayload(payload: Record<string, any>): Record<string, any>;
    /**
     * Verify the response data's CheckMacValue.
     */
    verifyResponse(responseData: Record<string, any>): boolean;
    /**
     * Verify and throw error if invalid.
     */
    verifyOrFail(responseData: Record<string, any>): Record<string, any>;
    /**
     * Generate CheckMacValue from data using MD5.
     */
    generateCheckMacValue(data: Record<string, any>): string;
    private dotNetUrlEncode;
}