期刊名称：International Journal of Computer and Information Technology
印刷版ISSN：2279-0764
出版年度：2014
卷号：3
期号：6
出版社：International Journal of Computer and Information Technology
摘要：Secured data storage and transmission has become an important issue in the digital world due to the increased use of Internet for communication purposes. Information security is becoming more important as the amount of sensitive data being exchanged on the Internet increases. The services like confidentiality and data integrity are required to protect data against unauthorized usage and modification. In recent years, several image encryption methods are introduced by various researchers to secure multimedia information while transit via public networks. A novel image encryption method based on pixels position permutation and random key stream is suggested in this paper. The pixels position permutation is done based on Hilbert Curve (HC). The pixel shuffled image is XORed with random key stream constructed by adopting the random bit pattern procedure used in the MD5 hash function to obtain the cipher image. The results confirm that the proposed method resists the statistical and differential attacks. Also attains acceptable entropy value, good key sensibility and secure against additive noise and cropping attacks
