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p256: fix Barrett reduction docs in scalar32 and scalar64 #1481

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p256: fix Barrett reduction docs in scalar32 and scalar64 #1481

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24792fb
fix Barrett reduction doc scalar64
Galoretka Sep 30, 2025
fa304b9
fix Barrett reduction docs in scalar32
Galoretka Sep 30, 2025
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6 changes: 3 additions & 3 deletions p256/src/arithmetic/scalar/scalar32.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -25,13 +25,13 @@ const MU: [Limb; 9] = [
/// The general algorithm is:
/// ```text
/// p = n = order of group
/// b = 2^64 = 64bit machine word
/// k = 4
/// b = 2^32 = 32bit machine word
/// k = 8
/// a \in [0, 2^512]
/// mu := floor(b^{2k} / p)
/// q1 := floor(a / b^{k - 1})
/// q2 := q1 * mu
/// q3 := <- floor(a / b^{k - 1})
/// q3 := floor(q2 / b^{k + 1})
/// r1 := a mod b^{k + 1}
/// r2 := q3 * m mod b^{k + 1}
/// r := r1 - r2
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2 changes: 1 addition & 1 deletion p256/src/arithmetic/scalar/scalar64.rs
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Expand Up @@ -27,7 +27,7 @@ const MU: [Limb; 5] = [
/// mu := floor(b^{2k} / p)
/// q1 := floor(a / b^{k - 1})
/// q2 := q1 * mu
/// q3 := <- floor(a / b^{k - 1})
/// q3 := floor(q2 / b^{k + 1})
/// r1 := a mod b^{k + 1}
/// r2 := q3 * m mod b^{k + 1}
/// r := r1 - r2
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