Image encryption using AES algorithm in Java

Question

Is there a library available in java to encrypt a string? Is there any library to encrypt and decrypt an image using AES in Java?

I haven't seen any libraries that let you encrypt strings - only byte arrays. — user253751, Jan 06 '15 at 06:40
Any library that can encrypt byte arrays can encrypt images. Or songs. Or strings. Or anything you want. — user253751, Jan 06 '15 at 06:43
Have you read this [question](http://stackoverflow.com/q/992019/2970947)? — Elliott Frisch, Jan 06 '15 at 06:43

score 1 · Answer 1 · answered Jan 06 '15 at 06:46

You can encrypt an image by piping it out to ByteArrayOutputStream, using Cipher.doFinal on the result bytes and writing that to an output source.

Example:

ByteArrayOutputStream baos = new ByteArrayOutputStream();
ImageIO.write(image, "png", baos);
SecretKeySpec keySpec = new SecretKeySpec(key, "AES");
Cipher cipher = Cipher.getInstance( ... );
cipher.init(Cipher.ENCRYPT_MODE, keySpec);
output = cipher.doFinal(baos.toByteArray());

Image encryption using AES algorithm in Java

1 Answers1