摘要
介绍了在DSP基础上,实现数字图像的混沌加密及硬件实现方法。根据离散化和数字化处理技术,对三维Chen混沌系统作离散化处理,用C语言和DSP技术产生三维Chen混沌迭代序列,分别对数字图像进行混沌加密和解密。基于芯片型号为TMS32 0VC5509A的DSP开发平台,以灰度图像为例,设计了Chen混沌序列对数字图像进行加密与解密算法,给出了DSP硬件实现结果表明,改善了安全性、提高了速度、满足了实时性要求。
A novel method for realizing chaotic digital image encryption and its hardware implementation based on DSP is presented. By the discrete and digital process technology, the three-dimensional Chen chaotic system is made discrete and Chen chaotic iteration sequence is generated by using Hardware Description Language C and DSP technology.Red,green,and blue tricolor signals of the image are encrypted and decrypted,respectively.On the basis of the DSP exploitation platform with TMS320VC5509A chip.a gray image with an BMP format is taken as an example. The digital image encryption and deeryption algorithm using Chen chaotic sequence is designed,and DSP hardware implementation result is given.
出处
《电子设计工程》
2013年第1期190-193,共4页
Electronic Design Engineering
