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Update FROST signing to match the IETF draft

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Modernizes dependencies
This commit is contained in:
Luke Parker
2022-04-23 03:49:30 -04:00
parent 76a6ff46be
commit e22dcb1441
18 changed files with 226 additions and 724 deletions
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15
sign/dalek-ff-group/src/lib.rs
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@@ -6,7 +6,7 @@ use core::{
use rand_core::RngCore;
use subtle::{Choice, CtOption, ConditionallySelectable};
use subtle::{Choice, CtOption, ConstantTimeEq, ConditionallySelectable};
pub use curve25519_dalek as dalek;
@@ -100,6 +100,10 @@ impl<'a> MulAssign<&'a Scalar> for Scalar {
fn mul_assign(&mut self, other: &'a Scalar) { self.0 *= other.0 }
}
impl ConstantTimeEq for Scalar {
fn ct_eq(&self, _: &Self) -> Choice { unimplemented!() }
}
impl ConditionallySelectable for Scalar {
fn conditional_select(_: &Self, _: &Self, _: Choice) -> Self { unimplemented!() }
}
@@ -117,7 +121,7 @@ impl Field for Scalar {
fn double(&self) -> Self { *self + self }
fn invert(&self) -> CtOption<Self> { CtOption::new(Self(self.0.invert()), Choice::from(1 as u8)) }
fn sqrt(&self) -> CtOption<Self> { unimplemented!() }
fn is_zero(&self) -> bool { self.0 == DScalar::zero() }
fn is_zero(&self) -> Choice { Choice::from(if self.0 == DScalar::zero() { 1 } else { 0 }) }
fn cube(&self) -> Self { *self * self * self }
fn pow_vartime<S: AsRef<[u64]>>(&self, _exp: S) -> Self { unimplemented!() }
}
@@ -130,11 +134,14 @@ impl PrimeField for Scalar {
type Repr = [u8; 32];
const NUM_BITS: u32 = 253;
const CAPACITY: u32 = 252;
fn from_repr(bytes: [u8; 32]) -> Option<Self> { DScalar::from_canonical_bytes(bytes).map(|x| Scalar(x)) }
fn from_repr(bytes: [u8; 32]) -> CtOption<Self> {
let scalar = DScalar::from_canonical_bytes(bytes).map(|x| Scalar(x));
CtOption::new(scalar.unwrap_or(Scalar::zero()), Choice::from(if scalar.is_some() { 1 } else { 0 }))
}
fn to_repr(&self) -> [u8; 32] { self.0.to_bytes() }
const S: u32 = 0;
fn is_odd(&self) -> bool { unimplemented!() }
fn is_odd(&self) -> Choice { unimplemented!() }
fn multiplicative_generator() -> Self { unimplemented!() }
fn root_of_unity() -> Self { unimplemented!() }
}