Video Steganography for Authentication: Enhancing Digital Watermark and Verification

Abstract

The thesis "Video Steganography for Authentication Enhancing Digital Watermark and Verification" elaborates an advanced methodology to enhance the security and authenticity of video content. With an increase in multimedia data exchange, robust security is required in the current digital era to provide protection against unauthorized tampering. Existing techniques of digital watermarking for the security or verification of digital media usually have a trade-off with (the Rivest, Shamir, and Adelman) algorithm encryption with advanced steganographic robustness, imperceptibility, and capacity. An innovative solution through the integration of RSA methodologies, like Least Significant Bit (LSB) replacement and XOR substitution, will be proposed to mitigate this limitation. The proposed model provides the facility to maintain secure and hidden data in video files, where it is safe and remains undetectable for security and verification purposes. The methodology involves the separation of frames from videos, and the frames are passed, utilizing the concept of a cryptographic hash function, to choose determined frames within which an encrypted message will be embedded. This has been implemented using public key cryptography. Public key cryptography using RSA has been implemented to ensure the confidentiality of the message for the intended receiver. The encrypted message is embedded into selected frames using LSB and XOR methodologies along with the message, maintaining the quality of the video. It has been shown in this thesis that these double layers of protection increase security considerably, making the system inhospitable for data extraction by attackers and offering perceptible protection against tampering. Long-reaching implications of the research include significant benefits in the areas of VIII © Daffodil International University intellectual property protection, digital forensics, and secure communications. The proposed video steganography model, thus emphasizing two main problems concerning robustness and imperceptibility, is a significant improvement and sets a mature model in the field of digital media security. A comprehensive model meant for the overall improvement of existing watermarking as well as verification processes has been developed. Keywords: video steganography, digital watermarking, RSA encryption, Least Significant Bit (LSB), XOR substitution, data security, multimedia authentication, cryptographic techniques, covert communication, data integrity.