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Cake day: June 4th, 2023

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  • It probably won’t affect Fedora because that’s already a consumer-oriented distro. For me, it’s a philosophical question. Do you want to run a distro that is supported by a company who would behave that way?

    What did you find in Fedora that you didn’t find in the other distros? Was it something about the graphical interface, or was it more about the system packaging ecosystem and developers?


  • In other words, if the sha matches, then it wasn’t corrupted during downloading. If the signature matches, then it wasn’t tampered with before you downloaded it.

    There’s also a third check. Even if the certificate signature is valid, you have to have confidence that the certificate is authentic and trusted to be from the original author. This is usually done by having a trusted third party sign the certificate with another, more trusted, certificate.


  • If you get the sha256 from the same place you got the main file, then anyone tampering with the main file could also recalculate the sha256 to match the tampered file. A signature signed with a certificate uses complex math (public-key asymmetric cryptography) to give some certainty that the signed content (the sha256) is the same sha256 that the original file author created. It’s not mathematically feasible to recalculate the certificate signature. Why don’t we just sign the whole original file with the public-key crypto and skip the sha256? Because asymmetric crypto is much, much slower than plain symmetric crypto or hash functions. It’s faster and easier to generate the valid hash or key, then sign or encrypt just the smaller key.