Are 128 and 256bit AES encryption considered weak?
I wanted to archive files and i figure i can write an app to automatically do it with winrar or 7z. Winrar uses AES-128 and 7z uses AES-256. I was wondering if that's easily breakable now that the market have quad cores? Some of these files are small like 10kb and even 4kb (maybe a few files with be <1k)
I want to backup many disc but i am nervous how easily they can be broken if someone really wanted to break it.
Best Answer
A recent AES-256 break described by Bruce Schneier in his July 30, 2009 posting,
Another New AES Attack
The quote above has highlights relevant to the question and
mild typographical changes I made.
Schneier was probably typing slower then he thinks...
The original reference is linked for the purists.
Finally, if you want to look at what some Stackoverflow users want to say about,
Is it possible to reverse engineer AES256?