EFF Dice-Generated Passphrases
www.eff.orgCreate strong passphrases with EFF's new random number generators! This page includes information about passwords, different wordlists, and EFF's suggested method for passphrase generation. Use the directions below with any set of dice.And now, a message from internationally renowned security...
This is really good for encrypted content such as a hard drive, password vault or gpg key
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Yeah, that is what I meant by “strength of the hash”. Probably should have been more clear. Basically the amount of resources it takes to calculate the hash will have to be spent by the attacker for each guess they make. So if it takes 1s and 100MiB of RAM to decrypt your disk it will take the attacker roughly 1s and 100MiB of RAM for each guess. (Of course CPUs will get faster and RAM will get cheaper, but you can make conservative estimates for how long you need your password to be secure.)
Parallelism 1, iterations 15, memory 512mb
New status unlocked! LUNATIC
Keep in mind they will be using GPUs with lots of ram and cores so that 1s will be more like hundreds or thousands a second.
It depends a lot on the hash functions. Lots of hashes are believed to be difficult to parallelize on GPUs and memory hard hash functions have different scaling properties. But even then you need to assume that an adversary has lots of computing power and a decent amount of time. These can all be estimated then you give yourself a wide margin.