Abstract:
Image information is important, especially in the
field of military. When those images are transmitted
over the communication channel, it needs the
privacy. There are a lot of image encryption
algorithms. Because of storing large size of pixels,
most of the functions are not appropriate for the
image encryption.
This paper presents an alternative symmetrickey
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) gray scale
function (GS). HVT function is based on a twodimensional
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 applies to encrypt military images,
such as Maps, Buildings, Army forces, etc.
