电话银行系统——密码拨号器设计

Banking System of the Telephone the Design of the Password Dialing Device

密码拨号器采用了DES加密算法对用户口令进行加密,与现有的银行密码体系相兼容,利用声耦合技术与电话机无任何连线,从而确保了用户口令的机密性,且硬件设计支持I2C总线协议规定,体积小巧,携带方便.通过密码拨号器代替用户手工拨号,对系统而言只增加了安全拨号功能,不改变原有的系统工作模式,合理地解决了当前电话银行系统中存在的安全隐患.

Adopting DES algorithm to consumer password, the password dialing device is compatible with the existing bank password system. There is no line to telephone by using the sound coupling technology, thus guarantees user confidentiality of password. Its hardware supporting I2C bus protocol volume is small and compact, then it is carried conveniently. Through the replacement of consumer dialing with the password dialing device replaces by hand, it increases the safe dialing function of system, solving the potential safety hazard existing in the banking system of the telephone at present rationally without changing the already existing systematic work pattern.