A complete binary tree structure block cipher for real-time multimedia

We propose a new symmetric block cipher encryption which provides confidentiality to the multimedia while transmitting through the network. The encryption relies on two typical operations, substitution and transposition. A complete binary tree performs substitution and a 2-d array performs non-linear diffusion in the 2 stage of the encryption/decryption process. The first stage spreads out the bits of a block into a complete binary tree and...