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On 7/25/2022 16:29, John Helmert III wrote: |
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> On Mon, Jul 25, 2022 at 03:59:59PM -0400, Joshua Kinard wrote: |
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>> On 7/25/2022 15:30, Joshua Kinard wrote: |
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>> [snip] |
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>> |
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>>> |
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>>> Some really quick looking around, I'm not finding any substantive |
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>>> discussions on why yescrypt is better than argon2. It so far seems that it |
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>>> just got implemented in libxcrypt sooner than argon2 did, so that's why |
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>>> there is this sudden push for it. |
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>>> |
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>>> E.g., on Issue #45 in linux-pam[3], user ldv-alt just states "I'd recommend |
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>>> yescrypt instead. Anyway, it has to be implemented in libcrypt.", but |
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>>> provides no justification for why they recommend yescrypt. Since we're |
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>>> dealing with a fairly important function for system security, I kinda want |
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>>> something with much more context that presents pros and cons for this |
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>>> algorithm over others, especially argon2. |
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>> |
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>> So there is this question and three answers on Crypto StackExchange. It is |
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>> about five years-old, but it's got more detail on why argon2 won the PHC |
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>> instead of one of the other contenders. It is still subjective information, |
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>> but more thorough: |
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>> https://crypto.stackexchange.com/questions/48933/why-did-argon2-win-the-phc |
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>> |
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>> There's some more info if one continues to deep-dive on CSE, but I am |
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>> noticing a lot of the info is several years old. Some more recent things |
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>> make references to a newer algo called Balloon, but that seems to be going |
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>> off into side-tangents. |
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>> |
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>> Anyways, I guess I am just being paranoid. If a change to hashing algos is |
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>> made, it should be based on facts and not popularity contests or feelings. |
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> |
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> I'm not sure it's fair to suggest this change is based on "popularity |
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> contests or feelings". The facts were given in the original mail, just |
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> because one finds them unconvincing doesn't mean those facts aren't |
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> real and convincing to others. |
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> |
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|
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My wording could sometimes be done better, but that's my takeaway in a |
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nutshell. Facts, presented objectively and well, should convince just about |
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anyone. But the Fedora page just doesn't do that for me. It really only |
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presents positives and no negatives of yescrypt. Are there any? I don't |
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know. I assume there have to be, but I'm not a crypto-expert. |
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|
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I've only done a light, cursory search on Google for something basic like |
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"argon2 vs yescrypt", and that gets a few interesting results. A few links |
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to github, one to the PHC website, another to the the now-dead openwall ML |
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posts, and Debian's bug for switching pam_linux over to using yescrypt. The |
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most recent discussion-wise result are the comments on a Hacker News article |
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that is 11 months old[1]. |
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|
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1. https://news.ycombinator.com/item?id=28181350 |
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|
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-- |
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Joshua Kinard |
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Gentoo/MIPS |
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kumba@g.o |
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rsa6144/5C63F4E3F5C6C943 2015-04-27 |
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177C 1972 1FB8 F254 BAD0 3E72 5C63 F4E3 F5C6 C943 |
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|
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"The past tempts us, the present confuses us, the future frightens us. And |
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our lives slip away, moment by moment, lost in that vast, terrible in-between." |
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--Emperor Turhan, Centauri Republic |
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