A Dual Approach to Image Security Using Steganography and Cryptography
Keywords:
Image Security, Steganography, Cryptography, Data Protection, Hybrid ApproachAbstract
The increasing reliance on digital communication has intensified the need for robust techniques to secure sensitive data, particularly images that often carry personal, medical, financial, or classified information. Conventional cryptographic methods ensure confidentiality by transforming data into unreadable ciphertext, while steganography conceals information within innocuous cover media, preventing suspicion. However, when used independently, each technique has limitations—cryptography alone may attract attention due to its apparent randomness, and steganography alone may fail if the hidden data is discovered. This research explores a hybrid model that integrates cryptography and steganography to establish a twofold security mechanism for image protection. In the proposed approach, data is first encrypted using a secure cryptographic algorithm and then embedded into a cover image using steganographic techniques, ensuring both secrecy and invisibility. The system’s effectiveness is analyzed in terms of imperceptibility, robustness, and resistance to attacks, offering a comprehensive framework for secure image communication in modern networks.
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