Secured Digital Video Authentication System
Keywords:
Digital Video, Watermarking, tampering, Frame, Cryptography, Encryption, decryption, DCT, DWT, Algorithm.Abstract
Digital Video is very important in day to day life. There is a problem of illegal updating or manipulation of digital video. There are many techniques to prevent this issue like copyright, Digital Signature and Watermarking. Watermarking is a process of embedding a watermark into a video using the method of discrete cosine transform (DCT) and discrete wavelet transform (DWT).In this paper DCT method is used. In watermarking secret data can be embedding into a video during embedding process. But still there are issues of tampering the video. Tampering like adding frame, dropping frame, replacing frame etc. There are many algorithms of protection. Protection means changing the original data by converting the original data into some unknown form. Cryptography is one of the best techniques to protect image or video. In cryptography there is a term called encryption and decryption. Encryption means change the originality of image or video and decryption means to revert back the originality. Algorithm of encryption, decryption and DCT watermark is present in this paper.
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