Protection for encrypted data and logo in H.264/AVC video streams by CHAOS
D. Sowmya Keerthi, K. Satya Prasad · 2016
Digital videos are to be stored, processed and transmitted in the encryption of compressed video bit streams in order to maintain security. Data has to be hidden in these encrypted videos for the purpose of content notation and tampering detection. Data hiding without decryption preserves the confidentiality of the content more efficiently. Data hiding is the encrypted version of H.264/AVC video streams which includes three parts i.e., data embedding, data extraction, H.264 /AVC codec. The code words of intra prediction modes, motion vector differences, and residual coefficients are encrypted with stream cipher in H.264/AVC codec. By using bit replacement technique. A data hider can embed additional data in the encrypted domain without changing or knowing the original video content. The proposed approach presents the selective encryption, and Data hiding in LSB process. We propose Chaos Crypto System to encrypt /decrypt the secret info before/after the embedding/extraction of info. This process is used for reducing time consumption, avoids leaks of videos, better compatible for privacy protection.