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Digital Watermarking using Spatial Domain and Blowfish Algorithm
Piyoosh Pandey and Manish Gupta

Published in: Journal for Advance Research in Applied Sciences
Volume- 5, Issue-1, pp.140-146, Jan 2018
DPI :-> 16.10089.JARAS.2018.V5I1.140146.2290

Use of internet in open environment in today’s era, introduces the new set of problems of copyright protection, security and authentication of digital images. This paper is about the robustness of a digital watermarking scheme to protect and authenticate digital images. The process starts with a goal of gaining high level of privacy and efficiency by combining digital watermarking with symmetric key cryptography together to embed the secret information in cover image. By using a secret key Blowfish algorithm generates an encrypted watermark to embed it with a cover image. Embedding an encrypted watermark in spatial domain of cover image makes it very difficult for invaders to access and alter the images. The experimental results from MATLAB implementation of proposed scheme shows that the better imperceptibility, capacity and robustness against various noise attacks. The possible applications for the proposed scheme are content protection, copyright protection, message authentication and data integrity.

Key-Words / Index Term
Blowfish, Copyright, Cryptography, Digital Watermarking, Privacy, Spatial Domain.

How to cite this article
Piyoosh Pandey and Manish Gupta , “Digital Watermarking using Spatial Domain and Blowfish Algorithm”, Journal for Advance Research in Applied Sciences, 5, Issue-1, pp.140-146, Jan 2018. DPI:16.10089.JARAS.V5.I1.2290