Slice-level selective encryption for protecting video data
Seo-Hyun Jeong, Eunji Lee, Sung-Ju Lee, Youngwha Chung, Byoungki Min · 2011
SECMPEG selectively encrypts data to protect MPEG video streams. However, this scheme is inefficient because it encrypts the whole I-frames whose size is relatively larger than B/P-frames. In this paper, we propose a more efficient selective encryption approach which exploits the error propagation property in MPEG2 standard. Our experimental results show that the proposed approach can reduce the execution time of SECMPEG by a factor of 32 without degradation of the security.