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what if the hacker provided the public key for https connection? (www.youtube.com)

submitted 3 months ago by Moxible@monyet.cc to c/technology@lemmy.world

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So this video explains how https works. What I don't get is what if a hacker in the middle pretended to be the server and provided me with the box and the public key. wouldn't he be able to decrypt the message with his private key? I'm not a tech expert, but just curious and trying to learn.

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[–] lostmypasswordanew@feddit.de 0 points 3 months ago* (last edited 3 months ago)

All TLS/HTTPS clients have a set of Certificate Authority keys which they trust. Your client will only accept a public key which is signed by a trusted CA's key. A proper CA will not sign a key for a domain when it has not verified that the entity that wants it's key signed actually controls the domain.