Abstract: The paper highlights the security needed door transmission of data on a wireless network, with the technology moving forward wireless communications has grown enormously. It is necessary to provide security for wireless data transfer as it is more vulnerable to the security attacks .70% of the online data transfer is in the images This implies it is important to provide security to text as well as images .Images have large data size and also has real time constraints problem hence the same cipher cannot be applied to encrypt images and text. But with some manipulation ARE can be used for this purpose. Here we modify AES by adding key stream generator (CEK) for enhanced security.

Keywords: AES, Cryptography, Image encryption, Wireless transmission.