Design of New Secret Key to Increase the Security of LSB Algorithm

Abstract

now a days, information security has become a big challenge for the world due to the rapid growth of Internet users day after day. Unauthorized access to confidential data can have serious implications such as financial loss, etc. One of the best techniques for secure communication is secret writing.Hiding data is very important nowadays as data travels over multiple insecure networks. To avoid this problem, encryption is used that hides data, but in some cases encryption cannot provide full security because the message is still available for encryption analysis.Encryption focuses on making the message unreadable to any unauthorized person who might intercept it. On the other hand, hiding information is a means of hiding the existence of a message to allow secure communication in a completely undetectable manner. Hide information and encryption are two different ways to hide data. In this paper the researcher suggests how to hide the message using the least significant bit algorithm inside an image and encrypt it in a new way, by modifying the DES algorithm, the researcher generated subkeys from the DES algorithm and used them to specify the masking mechanism in the digital image.