摘要
文章提出一种基于混沌和比特级置乱的并行图像加密算法——CBLP算法。该算法主要包含3种基本运算:像素位置置换、比特旋转(BR)以及像素值异或(XOR)运算,其中位置置换用于置乱像素位置,BR和XOR运算用于扩散图像的像素值。另外,为充分利用当前异构处理平台的计算资源以大幅提升算法的执行效率,文章在NIVIDIA GeForce GTX 580 GPU上使用OpenCL技术并行实现了该算法。实验结果和数值分析表明,CBLP算法具有较高的加密效率和良好的安全性,可以有效地应用于实际加密当中,具有较高的应用价值。
This paper proposes a parallel image encryption algorithm based on chaotic and bit level permutation （CBLP）. The CBLP algorithm includes the pixel position permutation operation, bit rotation and XOR operation, and therefore the image is confused by the pixel position permutation and diffused by the bit rotation and XOR operation. In order to take full advantage of the heterogeneous processing platform to enhance the efficiency of the algorithm substantially, an OpenCL-based implementation of the algorithm with NVIDIA＆#39;s GeForce GTX 580 GPU device has been shown in this paper. Comparing to the implementation on CPU, the CBLP algorithm has the high encryption efficiency and the high security, and can be used effectively in practical encryption operation.
出处
《信息网络安全》
2014年第4期40-45,共6页
Netinfo Security
基金
国家自然科学基金[61272045]
浙江省自然科学基金[R1090138]
