Histogram matching attack on selective perceptual video encryptions in H.264/AVC

Selective video encryption provide low encryption time by selection of sensible bits from the video codec, which is well suited for real time application like live TV, video conferencing, video telephony, video conferencing etc. During AVC encoding, such sensitive data as NZs in CAVLC, intra-prediction slice and motion vector are encrypted with the use of standard AES algorithm. Perceptual encryption requires that quality of visual data is only partially degraded by encryption i.e., the encrypted multimedia data are still partially perceptible after encryption. It can be noted that the perceptual encryption may be cryptanaysis by perceptual attack. This paper deals with histogram matching attack, which increase the video quality. This paper summarizes the result and proposed the better encryption method to resist the perceptual attack. All simulations are carried out in Intel Core i5 processor having 2.4GHz frequency, 4GB RAM with 64-bit window 7 operating system.