| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a magnetic card reading system that can prevent unauthorized duplication of magnetic cards by enabling a magnetic head and a computer to authenticate each other. <P>SOLUTION: In the magnetic card reading system 10, the computer 13 and a microprocessor authenticate each other, and after correct authentication results by the mutual authentication, the microprocessor encrypts a digital signal and sends the encrypted digital signal to the computer 13, and the computer 13 decrypts the encrypted digital signal. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
