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In the area of generic data security and privacy, there exists well established encryption system, but within the area of video security still there is need to evolve provable model of security. Various video encryption schemes based on 'symmetric encryption' have been proposed, so far, but these techniques lacks rigorous and provable model of security, hence their efficiency degraded significantly when scaled to real life applications. Asymmetric Cryptosystems basically works on the principle of 'Trapdoor one way functions' , which consume CPU power significantly results in slow speed of AE. Therefore, AE is never considered 'good' for video encryption. Real time processing is the foremost need of video applications, therefore, in the area of Video Security, possibility of 'Asymmetric Encryption' is still unexplored due to its slow speed. This book explores a way, to use computationally intensive 'Trapdoor One Way' mathematical functions efficiently in the area of video security.