Research on Chaotic Cryptosystem Based on Time Delay Feedback Chua Circuit
In the past few yean, a number of image cryptosystems have been proposed. However, many of them have been shown to be insecure. In this paper we present a robust and efficient cryptosystem based on the synchronization of a chaotic time delay system to transmit a digital image in a secure way. It consists of two steps: the first one assures the transmitter/receiver synchronization, the second step focuses on the encryption/decryption procedure. The transmitter module consists of a chaotic generator which is the time delay feedback Chua circuit and an encryption mechanism (chaotic masking), in which the secret message (digital image) is added to the output of the chaotic generator. The receiver module consists of a nonlinear state observer design which is driven by only one of the states of the time delay feedback Chua circuit and a decryption mechanism. 关 键词 The cryptosystem is of benefit to the security of digital images.
Cryptosystem Encryption Chaos Chua Circuit
Yuhuan Zhang Zhenyou Zhang Yilong Lei
College of Light Industry, Hebei Polytechnic University Tangshan, 063000, Hebei, China
国际会议
成都
英文
187-190
2010-06-12（万方平台首次上网日期，不代表论文的发表时间）