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fix(hmac-sha256): compute PHash and AHash concurrently (#969)

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---------

Co-authored-by: th4s <th4s@metavoid.xyz>
This commit is contained in:
dan
2025-08-21 09:41:59 +03:00
committed by GitHub
parent afd8f44261
commit 5034366c72
1 changed files with 6 additions and 5 deletions
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11
crates/components/hmac-sha256/src/prf/function/reduced.rs
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@@ -40,7 +40,6 @@ enum PrfState {
inner_partial: [u32; 8],
a_output: DecodeFutureTyped<BitVec, [u8; 32]>,
},
FinishLastP,
Done,
}
@@ -137,16 +136,18 @@ impl PrfFunction {
assign_inner_local(vm, p.inner_local, *inner_partial, &msg)?;
if *iter == self.iterations {
self.state = PrfState::FinishLastP;
self.state = PrfState::Done;
} else {
self.state = PrfState::ComputeA {
iter: *iter + 1,
inner_partial: *inner_partial,
msg: output.to_vec(),
}
};
};
// We recurse, so that this PHash and the next AHash could
// be computed in a single VM execute call.
self.flush(vm)?;
}
}
PrfState::FinishLastP => self.state = PrfState::Done,
_ => (),
}