论文标题
基于块渗透的加密方案，具有RGB组件的独立处理
A Block-Permutation-Based Encryption Scheme with Independent Processing of RGB Components
论文作者
论文摘要
本文提出了一个基于块渗透的加密（BPBE）方案，用于加密 - 加压（ETC）系统，从而增强了颜色争夺。在将原始图像分为多个块之后，可以通过四个过程，即位置争夺，块旋转/翻转，负阳性转换和颜色组件改组来获得BPBE图像。所提出的方案通过为每个颜色分量分配不同的键，在位置争夺，块旋转/翻转和负阳性转换中独立地拼凑出R，G和B组件。常规方案考虑使用JPEG和JPEG 2000的压缩效率，默认情况下需要在压缩过程之前进行颜色转换。因此，常规方案在每个过程中都相同拼凑出颜色成分。相比之下，提出的方案考虑了基于RGB的压缩，例如JPEG-LS，因此可以增加争夺的程度。因此，由于BPBE图像的颜色分布更广泛，可以增加针对拼图拼图求解器（JP）的弹性。此外，针对蛮力攻击的弹性弹性的关键空间也被指数扩展。此外，与常规方案相比，提出的方案可以维持JPEG-LS压缩效率。我们通过实验和分析确认了所提出的方案的有效性。
This paper proposes a block-permutation-based encryption (BPBE) scheme for the encryption-then-compression (ETC) system that enhances the color scrambling. A BPBE image can be obtained through four processes, positional scrambling, block rotation/flip, negative-positive transformation, and color component shuffling, after dividing the original image into multiple blocks. The proposed scheme scrambles the R, G, and B components independently in positional scrambling, block rotation/flip, and negative-positive transformation, by assigning different keys to each color component. The conventional scheme considers the compression efficiency using JPEG and JPEG 2000, which need a color conversion before the compression process by default. Therefore, the conventional scheme scrambles the color components identically in each process. In contrast, the proposed scheme takes into account the RGB-based compression, such as JPEG-LS, and thus can increase the extent of the scrambling. The resilience against jigsaw puzzle solver (JPS) can consequently be increased owing to the wider color distribution of the BPBE image. Additionally, the key space for resilience against brute-force attacks has also been expanded exponentially. Furthermore, the proposed scheme can maintain the JPEG-LS compression efficiency compared to the conventional scheme. We confirm the effectiveness of the proposed scheme by experiments and analyses.
