텐트 사상기반 동영상 암호화 방법

초록

The rapid growth of Internet and digital contents has made video distribution easily. Owing to this effect, the necessity of the protection of digital video was increased. In this paper, we propose a digital video encryption system based on Tent map for MPEG-2 encoding process. The proposed method generates cipher block using the tent map. The overhead of the method is low because it performs selective XOR operation between nonzero coefficients of DCT block and generated cipher block. The experimental result shows that the proposed method is effective in visual security and has low overhead in terms of data size and time ratio.