/// <reference types="node" />
/// <reference types="node" />
export declare const encrypt: (input: any, firstKey?: number) => Buffer;
/**
 * Decrypts input where each byte is XOR'd with the previous encrypted byte.
 * @alias  module:tplink-smarthome-crypto.decrypt
 * @param  {Buffer} input           encrypted Buffer
 * @param  {number} [firstKey=0xAB]
 * @return {Buffer}                 decrypted buffer
 */
export declare function decrypt(input: any, firstKey?: number): Buffer;