Replying to Avatar gandlaf21

ntag-424 cards can generate keys, so on each tap yeu get a new key. you could set it up in a way that each tap has a limit, so only a certain amount can be stolen with each tap
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matevz 7mo ago

ok, but how does the vault trust that the key was generated on the card and wasn't forged outside? Is it signed with the public key you publish somewhere?

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gandlaf21 7mo ago

if you are interested in how it works in detail, check out the spec for bolt card

https://github.com/Amperstrand/boltcard/blob/main/docs/SPEC.md

not sure if this is the official one, but you'll find it i'm sure