This research focuses on the design, implementation, and evaluation of a steganography system for secure data hiding in digital images. Steganography is the technique of concealing secret information within a non-secret medium, such that the presence of the information remains undetectable to unauthorized users. In this project, various image-based steganographic techniques were studied, with a primary focus on the Least Significant Bit (LSB) substitution method due to its simplicity and effectiveness. A prototype application was developed to embed and extract secret text data from images without noticeable changes in image quality. The system was evaluated based on parameters such as imperceptibility, payload capacity, and robustness against common image manipulations. Experimental results demonstrate that the proposed method offers high imperceptibility and reasonable security for practical use in confidential communication. This work highlights the potential of steganography as a complementary tool to cryptography for enhancing data privacy in digital communication systems.
Steganography, Cryptography, LSB, JavaScript, PHP, MySQL
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