Encryption of image files on Android — Cipher(Output|Input)Stream problems

Question

I\'m trying to encrypt image files on Android with password based encryption. To save the encrypted image I just do this:

FileOutputStream fos = new FileOutp         


        

Answer 1

When writing to a CipherOutputStream, make sure you close() the stream after writing the data (and not closing the underlying stream before it). Closing makes sure the right padding is added. A flush() alone is not enough here.

Also, I would advise to not use DES for new protocols - preferred nowadays is AES.

Answer 2

You could subclass CipherOutputStream or even just OutputStream, and just override the flush() method to do nothing.