关键词：传感器；通信安全；数据加密标准
摘 要：Security in communications is currently a field of particular importance. As computational power increases significantly each year, the software safety measures against eavesdroppers is consistently evaluated and upgraded. Various cryptographic methods are consistently used to protect all types of data transferred through intranet and internet links. Such cryptographic techniques are based on number theory or algebraic models. Secret key cryptography uses a secret key, such as the data encryption standard (DES) and the advanced encryption standard (AES) algorithms, in which both sender and receiver use the same key to encrypt and decrypt. Despite the speed of this method, getting the secret key to the recipient in the first place is a problem that is often handled by a public-key procedure.