论文部分内容阅读
智能SIM卡是一张用戶资料卡,每张卡代表一个用户。它记录有用戶的身份鉴别码及语音加密密钥,可以有效地防窃听、防并机、防盗用。GSM数字移动电话手机只有装上智能SIM卡方可使用,智能SIM卡可装
Smart SIM card is a user data card, each card represents a user. It records the user’s identity authentication code and voice encryption key, which can effectively prevent eavesdropping, anti-parallelism, anti-theft use. GSM digital mobile phone handsets can only be used with smart SIM card installed, smart SIM card can be installed