无线终端设备的计算能力通常比一般的PC机低很多,因此许多现有的图像加密算法并不适用于无线终端设备。本文提出了一种基于无损图像压缩的加密算法,该算法具有较少的计算量、较高的安全性和一定的压缩率。理论分析与实验结果表明该算法适用于无线终端设备。
The computing power of wireless terminal is usually much lower than that of PC. Accordingly, most known image encryption algorithms are not fit for wireless application. In this paper, we propose a new image encryption algorithm based on lossless compression, which is fast, secure and with acceptable compression rate. Both theoretic analysis and computer simulation show that it is practical for wireless application.