Re:Companies must stop using Google Analytics
by marcosdumay on Tuesday July 04, 2023 @01:24PM
(#36589777)
> the first 64 bits is generally enough to define the edge network
One complication is that hashing removes this structure. If you use any good algorithm, you will need to test the entire address to recover any part of it.
I am very wary of IPv6 addresses being so heavily biased into 00 or ff segments that the address space doesn't actually add much entropy. So, I'd go with no, it's not safe to hash them. But if you get some random ones, I am really not sure.
One complication is that hashing removes this structure. If you use any good algorithm, you will need to test the entire address to recover any part of it.
I am very wary of IPv6 addresses being so heavily biased into 00 or ff segments that the address space doesn't actually add much entropy. So, I'd go with no, it's not safe to hash them. But if you get some random ones, I am really not sure.