How to apply AES algorithm on Sound, Image and Video File????

Hi,

I want to apply AES algorithm on sound image and video file. For that I need to convert them in text file. How should I go about it. Plz help.

[Jan]

Before you ask a new question, it would be helpful if you answer our question about your former question at first.

[Walter Roberson]

duplicate is at http://www.mathworks.co.uk/matlabcentral/answers/57958-how-to-convert-audio-video-image-in-binary-outputs-and-vice-versa-series-of-1-s-0-s

Answer 1

[Jan]

No, there is no reason to convert the file to a text file. AES can encrypt the binary contents of the file directly, because any file can be interpreted as sequence of bytes.

fid = fopen(FileName, 'r');
if fid == -1, error('Cannot open file'); end
data = fread(fid, Inf, '*uint8');
fclose(fid);

All AES implementations I've ever seen work on Byte arrays.