针对多把钥匙和多个锁的匹配性问题,设计一种用于主动身份认证的低功耗智能钥匙。使用授权注册和主动双向认证方式实现钥匙对多把锁的管理,采用密码词典加密和准动态密码索引字确保认证过程的可靠性。根据钥匙低功耗要求,提出1 s周期定时休眠与0.005 s唤醒机制,以尽可能降低身份认证卡的功耗。实验结果表明,该智能钥匙睡眠模式功耗小于2 μA,且满足多把钥匙与多个锁之间相互匹配和安全认证的要求。
For the matching of multiple locks and multiple keys,a low-power intelligent key which is applied to the active authentication with embedded radio frequency identification is designed.The management of multiple locks is realized by means of authorized registration and active two-way authentication,where password dictionary encryption and quasi dynamic password index are used to ensure that the authentication process is reliable.According to the low power requirement of the key,a 1 s periodic sleep with 0.005 s wakeup mechanism is proposed to reduce the power consumption of authentication card as much as possible.Experimental results show that,the power consumption of the intelligent key sleep mode is less than 2 μA,and it meets the requirement of matching and security authentication between multiple keys and multiple locks.
wireless identity authentication,
low power consumption,
radio frequency identification