A Novel Method of Generating (Stream Cipher) Keys for Secure Communication

摘要

Security is an important part of computer science that deals with the protection of important information from access, change or modified, and delete, so there are many ways to improve the security of information like cryptography, steganography, biometrics, passwords, barcode ..... However most of these methods are considered keys required These keys are used to implement the changing of the information for secure style purpose. For that reason, generating and keeping these keys is a major part of the appropriate security system. Moreover, sending the key to the wanted person in unsacred channel is a widely weakness part for any system. The proposed system is a novel method for generating a secret unique key from an image. A generating process is applied by discovering the essential colors in the image and constructing a table values for these essential colors, after that a suitable threshold is used to considered these values are (0, 1) bits which will be used as stream bits key.