what s the longterm security margin of of a winzip or Winrar file encrypted with aes-256 and a password consisting of 64 completely random characters set a-z 0-9 and other printable special characters)?
How long will such a file be safe against an enemy with a large GPU cluster?
My own calculation is that the possible number of passwords is 96^64.
I have searched but all the amazing success stories turning up are about bruteforcing of weaker MD5 and Windows passwords.
Very little specific about cracking of Winzip, Winrar or PGP protected files on GPUs where the password is longer than 10 characters.
Does it mean that Winzip, Winrar and PGP encrypted files are not easily subject to the same attacks?
Or does it mean that we'll have to wait a few years before this security margin is broken by evolution in computational power?