Digital Image Scrambling Technology Based on Wavelet Transformation and Feistel Cryptography Structure
Yi Zhang · Journal of Logistical Engineering University · 2008
During transmission image information can be easily intercepted, and the steganography can protect the secret information from being extensively researched and applied. Although the scrambling technology is the preprocessing of steganography, but the steganography plays a very important role in the information security. This paper presents a new scrambling method based on wavelet transformation and Feistel cryptography structure. The processing object is the wavelet coefficients of the image. Scrambling algorithm is based on the Feistel cryptography structure and the keys generated from by Joseph traverse. The key generation belongs to the definition of one-time pad. In addition, the method has been used to hide the images of oil information according to the results of the experiment and the scrambling algorithms have achieved good results.