Watermarking scheme for authenticity and integrity control of digital medical image using Reed-Muller Codes and Hash Block Chaining
D. S. Prathiwi, Widi Astuti, Adiwijaya Adiwijaya, Tjokorda Agung Budi Wirayuda · 2015
Watermarking scheme can be a solution to embed more than one type of watermark that has a different purpose. Signature watermark can be used to embed some ownership information that is resistant to attack (authenticity control). Meanwhile, reference watermark can be used to detect modifications on digital medical images (integrity control). In this paper, signature watermark is embedded in frequency domain (Integer Wavelet Transform). To increase the robustness, Reed-Muller Codes can be applied in order to detect and improve if there is any modification attack. Authenticity control in this system is using Hash Block Chaining with the function of hash MD5. Based on the testing results, the combination of Reed-Muller on embedding process can improve the robustness of signature watermark from attack. Moreover, the fragility of reference watermark can be used to detect any attack of Gaussian noise, sharpening, blurring, and JPEG compression. It means the proposed scheme has a good performance for authenticity and integrity control of digital medical images.