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    • 9. 发明申请
    • METHOD FOR REALIZING SECURE COMMUNICATION
    • 实现安全通信的方法
    • US20160232360A1
    • 2016-08-11
    • US14388870
    • 2014-06-30
    • Feitian Technologies Co., Ltd.
    • Zhou LUHuazhang YU
    • G06F21/60G06K19/04G06F13/42
    • G06F21/602G06F13/4282G06F21/606G06F2221/2107G06K19/04H04L9/0891H04L9/14
    • A method for realizing secure communication, comprises: Step 1, a card reader is powered on, determine a system working mode, perform an apple device verification and execute Step 2 if the system working mode is apple mode; execute Step 2 if the system working mode is USB mode; Step 2, wait for receiving an instruction, determine a first preset byte of the instruction, perform corresponding operation if the first preset byte is a first preset value; decrypt the instruction according to an initial encryption key, a key serial number and an algorithm corresponding to an algorithm flag, send the decrypted instruction to a card and execute Step 3 if the first preset byte is a second preset value; Step 3, when data returned by the card is received, the key serial number is updated, the algorithm according to the algorithm flag, the initial encryption key and the updated key serial number are configured to encrypt the data returned by the card, send the encrypted data to an upper computer via a corresponding interface according to the system working mode. According to the present invention, after a key agreement between the card reader and the upper computer, the key is updated, data is encrypted or decrypted by the updated key to improve safety of data communication.
    • 一种用于实现安全通信的方法,包括:步骤1,读卡器通电,确定系统工作模式,执行苹果设备验证,并在系统工作模式为苹果模式时执行步骤2; 如果系统工作模式是USB模式,请执行步骤2; 步骤2,等待接收指令,确定指令的第一预设字节,如果第一预设字节是第一预置值,则执行相应的操作; 根据初始加密密钥,密钥序列号和对应于算法标志的算法解密指令,将解密的指令发送到卡,并且如果第一预设字节是第二预设值则执行步骤3; 步骤3,当接收到卡返回的数据时,更新密钥序列号,根据算法标志,初始加密密钥和更新密钥序列号的算法配置加密卡返回的数据,发送 根据系统工作模式,通过相应的接口将加密数据加密到上位机。 根据本发明,在读卡器与上位计算机之间的密钥协商之后,密钥被更新,数据被更新的密钥加密或解密,以提高数据通信的安全性。