Fast encryption for multimedia

The security of multimedia data is important for multimedia commerce. The e ncryption algorithms with high security, such as DES and IDEA, may not be s uitable to multimedia applications because large data sizes and real time c onstraint. This paper proposes a fast encryption algorithm for multimedia data, called FEA-M. FEA-M is based on Boolean matrix theory. The plaintext and the ciph ertext are 64 x 64 Boolean matrices while the secret key is also a 64 x 64 matrix. The structure of FEA-M is chosen to provide confusion and diffusion and to facilitate both hardware and software implementation.