VLSI
REALIZATION OF A SECURE CRYPTOSYSTEM USING IMAGE ENCRYPTION
Cryptography means transfer of secure information and it is
widely used in military image database , medical imaging , secret video
conferencing to prevent illegal access of data in wireless and general
communication networks. This project deals with image encryption which uses
chaotic and Brahmagupta-Bhaskara(BB) algorithms with moderate key size.
The chaotic algorithm
seems to be insecure because of its limited key size and is more vulnerable to
plain text attacks.To overcome this we are combining Brahmagupta-Bhaskara(BB) algorithm with
chaotic algorithm with moderate key size for transfering highly image between
sender and receiver through a wireless channel so that the image will be
transmitted in highly secured manner.
This algorithm is based on Advanced Encryption
Standard (AES).which comes under secret key cryptography in which the key value
is known between sender and receiver.In this project first the image is readed
by using matlab then the image is converted into text file then the text file
is readed in the modelsim then encypted output is loaded in the another text
file finally the encrypted image is displayed in the matlab 
