Abstract:
Nowadays, Image information is important,
especially in the field of military. When those images are
transmitted over the communication channel, it needs the
privacy. Therefore, Image encryption plays important role.
There are a lot of image encryption algorithms already
presented. Because of storing large size of pixels, most of the
functions are not appropriate for the image encryption. This
system will present an alternative symmetric-key encryption
algorithm for securing images, namely Secure Image Encryption
based on chaos. Generally, it comprises of three main
components: (1) horizontal vertical transformation function
(HVT); (2) Shift function(S), and (3) grayscale function (GS)
HVT function is based on a two-dimensional chaotic map that
utilized Baker’s map algorithm. GS function extends the
algorithm to three-dimension, whereby, the third dimension
refers to the level of the grayscale of a pixel. This secure image
encryption will be applied to encrypt military images, such as
Maps, Buildings, Arm forces, etc.
