key: don't use Hasher to generate fingerprints; just use hashes crate
#726
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conceptACK. You missed setting the PR title. |
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Hasher to generate fingerprints; just use hashes crate
There is no need to hash up the secret for Keypair. It already has a "fingerprint" in the form of its public key. We should just use that.
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CI failure looks like some unrelated |
Kixunil
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Aug 26, 2024
| fn fmt(&self, f: &mut ::core::fmt::Formatter) -> ::core::fmt::Result { | ||
| f.debug_struct("Keypair") | ||
| .field("pubkey", &self.public_key()) | ||
| .field("secret", &"<hidden>") |
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In addition to changing
SecretKeyandSharedSecretto usehashes, we also unconditionally use the public half ofKeyPairas a fingerprint, since that's always available and does not need extra deps.This patches the existing unit tests but doesn't add more. Maybe they should be removed; it's a bit weird to have unit tests for
Debugoutput. But in this case we're doing some nontrivial logic and I guess we wanted to double-check that it was taking effect.I'd also like to change the manual tagged-hash implementation to use
bitcoin_hashesmethods but those are under construction rust-bitcoin/rust-bitcoin#3184 and the existing stuff is neither faster nor less code than what's currently done. So we'll live with it.Fixes #725