Invention Grant
US08353054B2 Method for protection of a chip card from unauthorized use, chip card and chip card terminal 有权
保护芯片卡免受未经授权使用的方法,芯片卡和芯片卡终端

Method for protection of a chip card from unauthorized use, chip card and chip card terminal
Abstract:
A method for protection of a chip card from unauthorized use includes: inputting a first identification into a chip card terminal, producing a cipher of at least one first communication parameter using a first symmetric key derived from the first identification, a protected first communication channel being definable between the chip card terminal and the chip card, using the communication parameter, transmitting the cipher via a predefined communication channel from the chip card terminal to the chip card, attempting to decrypt the cipher using a second symmetric key by means of the chip card, the result of decryption only being the first communication parameter if the first symmetric key is identical to the second symmetric key so that the protected first communication channel can only be defined between the chip card terminal and the chip card if the first identification is correct.
Information query
Patent Agency Ranking
0/0