KEELOQ滚动加密技术在汽车防盗系统中的应用

Application of KEELOQ hopping encode technology in the automobile security system

KEELOQ滚动加密技术作为Microchip公司的一项专利产品被广泛应用于各安防领域。在汽车防盗系统中汽车中控锁是一个必不可少的部分,其保密性设计在汽车防盗系统中高于任何其他的防盗装备。KEELOQ加密技术较之其他加密技术增加了同步计数值参与加密,每次发送数据时,同步计数器的值都得到更新,从而加密结果在每次发送数据时都得到改变,这种技术被称为滚动加密技术,具有很好的抗截获性。本文讨论了KEELOQ加密技术在汽车防盗报警系统中的应用,详细介绍了KEELOQ加密机制的原理,利用HSC301实现硬件加密和用软件实现解密的方法。

As a Microchip Corporation＇s patent product, KEELOO hopping encode technology has been widely applied in all security and defending areas. Automobile center control lock is an indispensable part in the automobile security system whose secrecy design is superior to any other security equipments. Compared with other encryption technologies participating in the encryption, the KEELOO encryption technology increased the synchrometer value in it, which enable the values of the synchrometer get upgraded each time when the data were transmitted. So the anti--interception performance is guaranteed by this hopping encode technology. This paper discussed the application of the KEELOQ hopping encode technology in the automobile security alarm system, and introduced the principle of the KEELOO encode mechanism in detail, the hardware encoding method using the HSC301, and the realization of decode with software.