encyption and decryption of image using hill cipher

how do I encrypt any image using hill cipher technique. I want to scramble the image first by using hill cipher and on that scramble image I want to apply arnold cat map for scrambling image again.Please help me with matlab code for it.

[Karbala'a Unvi. Science]

Hi there,

Dear Nancy,

Can you send me the code for encriting the image with the chaotic map.. I need to follow up that code with you to create another cryptography code from that, couse I am working on something like that.

Yours

Dr. Zeyad Nabeel

[Image Analyst]

Attached is my arnold cat map code.

[Samaa Yasser]

@Karbala'a Unvi. Science hey, please do you have a code for encrypting image or text based on chaotic map ??

i need a help please to got this code

Answer 1

[Image Analyst]

Your best bet, if you don't want to write the code yourself, is to check the File Exchange, or use Google.

[Nancy]

Sir, I already encrypted the image using chaotic map. I just wanted to provide much more security to my algorithm by encrypting the image by hill cipher. Thats why i asked this question. And people here are for helping each other infact if you think we people take help from google and other. Then there is nothing wrong. Its meant to help people. Lastly thank you for your comment. And yeah i didn't forgot to accept you answer. Its really helpful in no way.

[Image Analyst]

You gave no indication that you had already written code for it. You didn't attach your file, or tell people that you already had code where you needed improvements. I'm not an encryption expert so I can't help you with your code. I don't think there are many encryption experts here but I could be wrong. If you still need help/advice on your code, then please attach it (if you can legally, and you have no problem with others seeing your code), and someone may answer. Though usually the answers here involve syntax errors, error messages, simple program flow, etc., not complicated algorithm development. Good luck.