Abstract—In this paper, we proposed a reconfigurable secure image codec based on the Discrete Wavelet Transformation (DWT) and the Advanced Encryption Standard (AES)processor. Either, use of image coding with DWT or encryption using AES is well known. However, linking these two designs to achieve secure image coding is leading. The prominent feature of this method is a partial encryption of bass frequency (LL bands) by AES-128 (128-bit keys), or AES-192 or AES-256. Our approach provides considerable levels of security (key size, partial encryption, encryption mode), and has very limited adverse impact on the compression efficiency. The proposed codec can provide up to 9 cipher schemes within a reasonable software cost. Correlation, PSNR and compression rate results from these codec are analyzed
Index Terms—AES, Band LL, DWT, Partial Encryption, Security Levels.
The authors are with the Electronics and Microelectronics Laboratory, Faculty of Sciences Monastir, 5000 Tunisia (corresponding author Medien. Zeghid: +216-73 501 785; fax: +216-73 501 785).
Cite: D. Dia, M. Zeghid, M. Atri, B. Bouallegue, M. Machhout and R. Tourki, "DWT-AES Processor for a Reconfigurable Secure Image Coding," International Journal of Computer Theory and Engineering vol. 1, no. 2, pp. 188-194, 2009.