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Security is required for the protection of delivery of multimedia data. Thus this security is provided by encryption. There are many encryption schemes are present for protecting multimedia data. In this paper, the authors are using selective encryption for protecting multimedia data. It takes less computational workload and provides five levels of security from level 0 to level 4. Multimedia data is a grouping of some of the subsequent medium: content, audio, moving image, and film. Multimedia safety deals with ways of defending such substance.
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