8 ms·
This is just turning one hash into another, so would be just as easy to brute force.
by zepolen 10y ago
This is just turning one hash into another, so would be just as easy to brute force.
- adrianratnapala 10y agoThe point is to turn one fairly big hash into a representation where humans can easily spot the differences.
- vesinisa 10y agoPretty sure most of the time people only read the first few and last words and e.g. don't concern if the words in the middle are in correct order. Not sure about the size of that dictionary, but it would seem to greatly diminish the entropy.
- sp332 10y agoIt doesn't. The dictionary is exactly the same size as the input data. It's lossless.
- avisser 10y agoIt's asking for a solution with more gestalt impact. Turn the key into a painting or some sort of visualization.
- AdamN 10y agoAh, you mean randomart: http://superuser.com/questions/22535/what-is-randomart-produced-by-ssh-keygen http://superuser.com/questions/22535/what-is-randomart-produ...
- thomasahle 10y agoIt has to be a visualization in which changing a few pixels make it look significantly different. Otherwise we can still make a 'low distance' brute force attack.
- adrianratnapala 10y agoI don't understand. What you need is a picture that makes the visually salient information tot up to about 160 bits. That's tough, but since the human visual system is so powerful, it's not hopeless. But we would need real psychologists to help design the art generators, backing the results with experiments.
- adrianratnapala 10y agoWhether it is vision or words, the point is to enlist some of our primal, automatic brain machinery. Both the random word lists and randomart are a good start, but far from perfect. The word lists ignore and even foil, our gramatical machinery. And I at least have never been able to remember what my own randomart SSH key fingerprint looked like. Adding colour might be a good start.
- rrobukef 10y agoIt depends on how valuable the identity is. I check some characters, for additional security I check some in the middle until I am satisfied with security. The downside is security creep, but verified identities generally grow more secure the older they are (does this grow faster?). The upside to showing a larger hash is that humans are very good at roughly comparing two things. The difference in casing is probably enough to trigger a conscious check. A visual hash is still better.
- crottypeter 10y agoThe correct way to compare hashes is to let the computer do it. i.e. Ctrl + C, Ctrl + F, Ctrl + V "oh look it didn't find it ... they don't match", versus, "yup all 64/128/2048/n digits match, the hashes are the same".
- kccqzy 10y agoWe still need to define a hash format. Typical hex/base64 would work, but imagine someone tries to be smart and invent a dictionary word encoding with Unicode characters, and then someone brute forces another key that's actually different but will match a search with smart Unicode collation algorithms.
- deleted 10y ago[deleted]