The original Diceware list has at least 1400 of these collisions like 'any' 'how' and 'anyhow'. Slack permissions are required to detect the /xkcd command. word occurs in the explanation or transcript. The security doesn't derive from it being unknown, but from it being a good way to generate memorable passwords from a large search space. But XKCD's claim already accounts for that: 2048^4 = 2^44. The words are not human-chosen, they are chosen randomly. The mathematics in the xkcd comic is correct, and it's not going to change. Don't have to recite korbanot at mincha? It would be nice/better if it zoomed in, instead of out. This is why the oft-cited XKCD scheme for generating passwords - string together individual words like "correcthorsebatterystaple" - is no longer good advice. Isn't it still pseudorandom? If you click enough times, this is actually a relevant xkcd to relevant xkcds to relevant xkcds ad infinitum. Back in 2008, I described the "Schneier scheme". I didn't spend a lot of time researching costs and benchmarks. My name is Thomas Park, and I started Codepip to make tools that help people learn to code. The relevant xkcdoften pops up as a reminder that an idea (or its setbacks) have already occurred to others. The xkcd comic assumes in both examples that all the details of the generation are known. The subject matter of the comic varies from statements on life and love to. ), 44 bits of entropy 6.7 character password (also bad), 66.4 bits of entropy 10.1 character password (okay for 2016), Make a nonsensical "sentence" of 4+ words of 4+ characters each (100,000), None of these words can be connected to you or each other, Use case, spaces, and at least two symbols or punctuation marks (32), At least one word should fail spell check (e.g. Schneier did say his scheme "gives you more entropy per memorizable character than other methods" which is true when compared to characters making up words. out of a playing field of 64 submitted projects We have an explanation for all 2784 xkcd comics, and only 28 (1%) are incomplete. Against a broad-based attack -the sort of thing where an attacker got a list of passwords from a Website and doesn't know anything about whose passwords are in the list- this is as strong as it ever was. Just as you say, its strength comes from the power of exponents (and a good word list). Therefore, he needs to say disparaging things about the "competitors", regardless of whether such assertions are scientifically sound or not. A: Says thing B: relevant xkcd.jpg A: These comics are always so stragely relevant! The xkcd comic assumes in both examples that all the details of the generation are known. LongtimeUser4 writes: Is there a relevant xkcd to post after they say that line? You agree to indemnify, defend and hold harmless Relevant XKCD, our affiliates, and employees from any and all third party claims, liability, damages and/or costs (including, but not limited to, attorneys fees as and when incurred) arising from your use of Relevant XKCD. If I may quote myself, The great thing about Diceware is that we know exactly how secure it It doesn't matter if you type it or use a program like KeePass to copy and paste it if an attacker can key-log / read memory. Comments: The reason that the entropy goes down if the attacker knows the method is that it changes the whole structure of the password.
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