Replying to Avatar jb55

anyone have a good idea on how to make hashes of phone numbers rainbow-table resistant? Trying to think of a way to find friends on nostr by phone number but without leaking the number. maybe argon2(first name + number) ?

We should spec this if so.
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sommerfeld 1y ago 💬 2

Double sha256 hash? That's what Satoshi would do

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The Fishcake (nostr.build) 1y ago

Too weak, easy to compute a large table 🐶🐾🫡

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sommerfeld 1y ago 💬 2

I'm starting to think phone numbers don't have enough entropy. Without another source, it's hard.