Seminar PPT on Crypto Watermarking B.Tech

seminar ppt on crypto watermarking

1. arYA COLLEGE OF ENgineering . S ession 2020-2024

2. Crypto Watermarking Contents : Introduction Crypto Watermarking techniques Crypto Watermarking challenges Symmetric Crypto Watermarking example Asymmetric Crypto Watermarking Example Frequency Domain Crypto Watermarking Example Conclusion

3. Introduction What is crypto watermarking and why is it important? Crypto watermarking is the process of embedding a secret message (watermark) into a multimedia content (image, video, audio, etc.) using encryption methods. Crypto watermarking can provide authentication, ownership verification, tamper detection, and content protection for multimedia information. Crypto watermarking can be used in various applications such as medical, military, law enforcement, e-commerce, etc.

4. Crypto watermarking techniques How does crypto watermarking work and what are the main techniques? Crypto watermarking can be classified into two categories: symmetric and asymmetric. Symmetric crypto watermarking uses the same key for encryption and decryption of the watermark. Asymmetric crypto watermarking uses a public key for encryption and a private key for decryption of the watermark. Crypto watermarking can also be performed in different domains such as spatial, frequency, wavelet, etc.

5. Crypto watermarking challenges What are the main challenges and limitations of crypto watermarking? Crypto watermarking faces trade-offs between imperceptibility, robustness, and security. Imperceptibility means that the watermark should not degrade the quality of the original content. Robustness means that the watermark should resist various attacks such as noise, compression, cropping, filtering, etc. Security means that the watermark should not be easily detected, extracted, or modified by unauthorized parties.

6. Symmetric Crypto watermarking example An example of symmetric crypto watermarking is the algorithm proposed by  An Importance of Crypto-Watermarking Techniques for Secure Transmission of Multimedia Information , which uses a chaotic map and a secret key to encrypt and embed the watermark into an image .

7. Asymmetric Crypto Watermarking Example An example of asymmetric crypto watermarking is the algorithm proposed by  Real-time FPGA implementation of a secure chaos-based digital crypto-watermarking system , which uses a public key encryption scheme and a chaotic system to encrypt and embed the watermark into a video.

8. Frequency domain crypto watermarking Example An example of crypto watermarking in the frequency domain is the algorithm proposed by  A Review On Digital Image Watermarking With Cryptosystem Techniques , which uses discrete cosine transform (DCT) and a secret key to encrypt and embed the watermark into an image.

9. Conclusion What are the main takeaways and future directions of crypto watermarking? Crypto watermarking is a promising technique that can enhance the security and integrity of multimedia information. Crypto watermarking can be implemented using various methods and domains depending on the requirements and applications. Crypto watermarking still faces some challenges and limitations that need to be addressed and improved in the future.

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