Reply to post: Re: Unhash?

Home Depot sent my email, details of stuff I bought to Meta, customer complains

sinsi

Re: Unhash?

OK, I thought that a hashing algorithm was a "roll your own" bit of code, but there are (apparently) only 7 approved ones, so it would be trivial for Facebook to store someone's email address 7 times as a hash and then compare the Home Depot hash, or even compare on the fly.

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