Chaotic Image Encryption with Different Modes of Operation
Fathi E. Abd El-Samie · 2013
The main objective of chaotic encryption with different modes of operation is to increase the security of chaotic encryption with moderate computation time and adjust it to encrypt images with arbitrary dimensions. We investigated chaotic encryption with three modes of operation: CBC, CFB, and OFB [16-18]. The three modes were tested to decide which one would increase the data-hiding ability of the cryptosystem. Chaotic encryption with modes of operation can be simply summarized in the following three steps: 1. Scan the image row by row. 2. Convert the scanned rows to w blocks, each with N × N pixels. 3. Encrypt these blocks using the 2D chaotic Baker map in the CBC, CFB, or OFB mode as explained in the following sections.