impl ConditionallySelectable for Field
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@ -21,6 +21,7 @@ crossbeam = { version = "0.7", optional = true }
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pairing = { version = "0.16", path = "../pairing", optional = true }
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rand_core = "0.5"
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byteorder = "1"
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subtle = "2.2.1"
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[dev-dependencies]
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hex-literal = "0.2"
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@ -10,6 +10,7 @@ use std::cmp::Ordering;
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use std::fmt;
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use std::num::Wrapping;
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use std::ops::{Add, AddAssign, Mul, MulAssign, Neg, Sub, SubAssign};
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use subtle::{Choice, ConditionallySelectable};
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const MODULUS_R: Wrapping<u32> = Wrapping(64513);
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@ -22,6 +23,16 @@ impl fmt::Display for Fr {
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}
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}
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impl ConditionallySelectable for Fr {
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fn conditional_select(a: &Self, b: &Self, choice: Choice) -> Self {
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Fr(Wrapping(u32::conditional_select(
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&(a.0).0,
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&(b.0).0,
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choice,
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)))
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}
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}
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impl Neg for Fr {
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type Output = Self;
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