Timeline for Does entropy apply to passwords generation when some passwords are more likely? [duplicate]
Current License: CC BY-SA 4.0
19 events
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| S Mar 7, 2019 at 5:59 | history | suggested | Pang | CC BY-SA 4.0 |
Fixed invalid link [1].
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| Mar 7, 2019 at 2:42 | review | Suggested edits | |||
| S Mar 7, 2019 at 5:59 | |||||
| Jul 19, 2017 at 21:44 | history | edited | RealAnswersNotAI | CC BY-SA 3.0 |
took out confusing introductin to second paragraph
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| Jul 19, 2017 at 19:41 | history | edited | RealAnswersNotAI | CC BY-SA 3.0 |
added note about closure
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| Jul 19, 2017 at 18:35 | comment | added | RealAnswersNotAI | Let us continue this discussion in chat. | |
| Jul 19, 2017 at 18:34 | comment | added | Steffen Ullrich | Using the probability of picking a word from a dictionary instead of using the probability of a single character in case of a dictionary based password is essentially mapping the non-uniform distribution based on characters to a uniform distribution based on the dictionary. I don't think that you can compute a single entropy value if you cannot build such a mapping because in this case different password have different probabilities. | |
| Jul 19, 2017 at 18:19 | comment | added | RealAnswersNotAI | I'm still confused about how that makes this a duplicate. None of the questions include the point you've explained about mapping a non-uniform distribution to a uniform one, and not all my examples can even be correctly mapped to a uniform distribution. If you're referring to the "What dicitionary is your password in," that scheme wouldn't be accurate for say, choosing a 5-word phrase from the COCA corpus. As you can see from these complexities, having one answer in question A that is general enough to answer most of question B does not usually make question B a duplicate of A. | |
| Jul 19, 2017 at 17:48 | comment | added | Steffen Ullrich | The focus of your question has shifted from "what happens" with the entropy to "how to compare" the entropy in non-uniform distributions. The first question was actually answered in the ones I've referenced in that you cannot naively apply simple entropy calculation any longer in non-uniform distributions. And the second question actually has an example of how to compute the entropy in such cases and how not. Essentially it boils down to mapping the non-uniform distribution to a uniform one, i.e. don't use the characters but the words as a base in case of a dictionary. | |
| Jul 19, 2017 at 17:14 | history | edited | RealAnswersNotAI | CC BY-SA 3.0 |
Grammar in second-to-last paragraph
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| Jul 19, 2017 at 17:06 | history | edited | RealAnswersNotAI | CC BY-SA 3.0 |
Clarified example
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| Jul 19, 2017 at 16:52 | review | Reopen votes | |||
| Jul 20, 2017 at 9:50 | |||||
| Jul 19, 2017 at 16:43 | comment | added | RealAnswersNotAI | Perhaps my question before I edited it was unclear, but I don't see how the question linked even answers my question, let alone meets the criteria for duplication listed at meta.stackexchange.com/questions/213976/… Can anyone please explain by pointing to a paragraph in the "duplicate" answers that answers my question about non-uniform distributions? | |
| Jul 19, 2017 at 16:37 | comment | added | RealAnswersNotAI | @SteffenUllrich The first question you have marked seems to only address user-chosen password and uniformly distributed password. No mention is made of non-uniform distributions for passwords. The second question you have marked as a possible duplicate does not address my question at all. I never implied that I was treating passwords as strings of characters and stated clearly that I am asking about calculating entropy based on distributions used to generate the password. | |
| Jul 19, 2017 at 16:37 | history | edited | RealAnswersNotAI | CC BY-SA 3.0 |
Edited to clarify difference vs duplicates
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| Jul 19, 2017 at 14:22 | history | closed |
Steffen Ullrich TheJulyPlot WhiteWinterWolf Xander Gilles 'SO- stop being evil' |
Duplicate of Calculating password entropy? | |
| Jul 19, 2017 at 6:03 | review | Close votes | |||
| Jul 19, 2017 at 14:27 | |||||
| Jul 19, 2017 at 5:47 | comment | added | Steffen Ullrich | Possible duplicate of Calculating password entropy? and Confused about (password) entropy. | |
| Jul 19, 2017 at 3:44 | answer | added | Arran Schlosberg | timeline score: 0 | |
| Jul 19, 2017 at 0:45 | history | asked | RealAnswersNotAI | CC BY-SA 3.0 |