Re: How did they get behind my NAT?

Unruh wrote:


Being able to detect modified content doesn't mean that you can avoid the modification, and not even that you can correct it (the unmodified content might not exist anymore or might have never existed at all -> "fake").

???? If you know the stuff is bad, you can avoid it.


No. You can only ask other clients for the chunks, but you can only detect the modification after you actually downloaded them.

At any rate, you might not know if the content whose checksum you know might actually be the claimed content. It might be a completely different one, or a carefully modified original. You really need to get the checksum from the actual creator or a trusted deliverer of the original content.

I am sorry, you are claiming that someone could spoof the hash on the
content?


No, I'm talking about spoofing the content itself. Why would you trust me if I offered you a CD image of Windows Vista Ultimate with the hash 270eb5c849b240dedc7b2a24f04b56f028fcda6a that this is actually unmodified and I didn't implant a Trojan horse?
.

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