A dual-key cipher lock for bike consists of cipher box, lock box and keys.
自行车双钥匙密码锁是由密码盒部件、锁盒部件、钥匙等部件组成。
2
Also the scheme used the dynamic dual-key update mechanism, not only improves the security of the system, but also improved the efficiency of the system.
另外在本方案中采用了动态双重密钥更新机制，既提高了系统的安全性又提高了系统的效率。
3
The vault itself was protected by a dual lock system: a combination and a key lock, and two feet of reinforced steel.