this post was submitted on 09 Aug 2024
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89
512-bit RSA key in home energy system gives control of “virtual power plant” (arstechnica.com)
submitted 1 month ago by [email protected] to c/[email protected]
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[–] [email protected] 19 points 1 month ago (9 children)

How in the fuck do you even coax software into using a key like that? Did someone just say "yeah just use the smallest size possible, that'll be okay" and then just like not care?

[–] [email protected] 21 points 1 month ago* (last edited 1 month ago) (2 children)

From the article:

In an email, a GivEnergy representative reinforced Castellucci’s assessment, writing:

In this case, the problematic encryption approach was picked up via a 3rd party library many years ago, when we were a tiny startup company with only 2, fairly junior software developers & limited experience. Their assumption at the time was that because this encryption was available within the library, it was safe to use. This approach was passed through the intervening years and this part of the codebase was not changed significantly since implementation (so hadn't passed through the review of the more experienced team we now have in place).
[–] [email protected] 15 points 1 month ago (1 children)

So, it sounds like they don't have regular security audits, because that's something that would absolutely get flagged by any halfway competent sec team.

[–] [email protected] 4 points 1 month ago

No need for audits. It's only critical infrastructure embedded into tens of thousands of homes, lol.

[–] [email protected] 10 points 1 month ago

Yet another reminder that trust should be earned.

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