Overview

Encryption and watermarking are two important techniques used to protect digital images. Encryption is a method of converting plain text into a coded format that can only be accessed by someone who has the correct decryption key. This technique is used to protect the confidentiality of digital images by preventing unauthorized access. Watermarking, on the other hand, is a technique that embeds a visible or invisible mark or signature within a digital image to establish ownership and authenticity. This technique can be used for copyright protection, authentication, and tracking the distribution of the image. Both encryption and watermarking can be used together to provide a higher level of security for digital images. Encryption can be used to protect the image's data, while watermarking can be used to provide proof of ownership and authenticity. However, it is important to note that both methods have their own limitations and trade-offs. For example, while encryption makes it difficult for unauthorized users to access the image, it can also make it difficult for authorized users to access it. Similarly, while watermarking helps to establish ownership, it can also make the image less visually appealing and can be removed by malicious actors.

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