文档介绍：Non-contact IC card access control system design
Recently, a variety of services using munication technologies, such as merce or on-line shopping over the or the like, have e popular. With the growth munication technologies, terminal-munication systems and card-like devices including non-contact semiconductor memory cards having munication function integrated into a circuit (these devices are hereinafter referred to as non-contact IC (integrated circuit) cards) have been developed for use in various situations such as electronic toll collection of transportation facilities and electronic money transactions. In view of their convenience of handling, the non-contact IC cards must have a reduced circuit size and operate with very low power consumption.
The services using such non-contact IC cards generally require mutual authentication to authenticate municating parties and encryption to ensure munication security. These functions must be performed at high speed in the non-contact IC functions, which are implemented by software, require a high-clock CPU (central processing unit), which is not suitable for practical , it is desirable that the mutual authentication function and the encryption function be implemented in the non-contact IC cards by hardware rather than software.
Physical access by a person may be allowed depending on pay