Abstract:
The wide spread of WLAN and the popularity of mobile devices increase the frequency
of data transmission among mobile users. However, most of the data encryption
technology is location-independent. Indeed, an encrypted data can be decrypted
anywhere, however, The encryption technology cannot restrict the location of data
decryption. Therefore, our objective is to add a layer of security to the network without
breaking the network rules and to decrease network traffic. These aims can be achieved
by two ways. First, when the receivers decrypt almost all the encrypted messages sent
by senders. Second, when a decrease in the message queuing occurs. In order to meet
the demand of mobile users in the future, a location-dependent approach is proposed in
which target latitude/longitude coordinate must be determined. The coordinate is
incorporated with a random key for data encryption. The receiver can only decrypt the
ciphertext when the coordinate acquired from GPS receiver is matched with the target
coordinate.