Asynchronous multi factor model (AMFM) of security for wireless MAN

For credit cards and ATM cards, financial institutes around the world use the classical security system. This involves the distribution of keys through asynchronous bearers in space and time, whereas for authentication the keys are used synchronously through multifactor authentication. This methodology of asynchronous and synchronous usage of split keys is considered to be very secure. Due to lack of proper technology to date, there was no electronic equivalent of the same. However, with the emerging technologies in wireless metropolitan area networks (MAN), over GSM, GPRS, or CDMA/3G, it is possible to adopt the asynchronous mode of space and time for key distribution. The paper suggests a model for combining the asynchronous mode of space and time with ideas from quantum cryptography for key distribution to have a secure communication channel for wireless metropolitan area networks.