computer

Considering digital image features with high volumes and video data, especially in real-time applications, the use of classic encryption methods like DES, AES, ..., is not efficient in terms of being time cosuming. In this article, a new method is proposed to encrypt digital images, using chos systems and utilizing DNA patterns. A central idea in the method suggested is to produce a pseudo-random DNA strand using chaos functions, which an encrypted strand is created, using the random strand and the strand produced from the main image. Also, in the method, multiple tables are used; in the article how to create and use these tables are addressed. One of benefits of the method is the small volumes of data that are accessed by utilizing DNA patterns. Experimental results and security assessment experiments indicate that the method suggested has an ideal level of security.
With development of computer networks and the increasing use of Internet, the discussion of security in transferring data has been put forward as one of important subjects. The reason for it is the accessibility of data in Internet, and their easy access by authorized and unauthorized people. Data packets in Internet pass several intermediate public networks before they reach the target; this makes it easy that other people access data. In case of lack of protection of these data packets, it is impossible to work with Internet.
One of methods of data protection is to encrypt them. By data encryption, if there is unauthorized access to data by people, the possibility of using data will be impossible.
Also, with development of new applications, especially in commercial, military areas; video conferences, .., the need for quick and secure systems for digital images is increasing more and more. Recently, many algorithms [] have been presented, which have been suggested as methods of digital image encryption.
In general, encryption algorithms and techniques are classified in groups including