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Remove borsh from dkg

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It pulls in a lot of bespoke dependencies for little utility directly present.

Moves the necessary code into the processor.
This commit is contained in:
Luke Parker
2025-09-27 02:07:18 -04:00
parent 3512b3832d
commit 08f6af8bb9
6 changed files with 107 additions and 43 deletions
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7
crypto/dkg/Cargo.toml
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@@ -23,19 +23,12 @@ thiserror = { version = "2", default-features = false }
std-shims = { version = "0.1", path = "../../common/std-shims", default-features = false, features = ["alloc"] }
borsh = { version = "1", default-features = false, features = ["derive", "de_strict_order"], optional = true }
ciphersuite = { path = "../ciphersuite", version = "^0.4.1", default-features = false, features = ["alloc"] }
[features]
std = [
"thiserror/std",
"std-shims/std",
"borsh?/std",
"ciphersuite/std",
]
borsh = ["dep:borsh"]
default = ["std"]

21
crypto/dkg/src/lib.rs
View File

@@ -22,7 +22,6 @@ use ciphersuite::{
/// The ID of a participant, defined as a non-zero u16.
#[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, Debug, Zeroize)]
#[cfg_attr(feature = "borsh", derive(borsh::BorshSerialize))]
pub struct Participant(u16);
impl Participant {
/// Create a new Participant identifier from a u16.
@@ -129,18 +128,8 @@ pub enum DkgError {
NotParticipating,
}
// Manually implements BorshDeserialize so we can enforce it's a valid index
#[cfg(feature = "borsh")]
impl borsh::BorshDeserialize for Participant {
fn deserialize_reader<R: io::Read>(reader: &mut R) -> io::Result<Self> {
Participant::new(u16::deserialize_reader(reader)?)
.ok_or_else(|| io::Error::other("invalid participant"))
}
}
/// Parameters for a multisig.
#[derive(Clone, Copy, PartialEq, Eq, Debug, Zeroize)]
#[cfg_attr(feature = "borsh", derive(borsh::BorshSerialize))]
pub struct ThresholdParams {
/// Participants needed to sign on behalf of the group.
t: u16,
@@ -210,16 +199,6 @@ impl ThresholdParams {
}
}
#[cfg(feature = "borsh")]
impl borsh::BorshDeserialize for ThresholdParams {
fn deserialize_reader<R: io::Read>(reader: &mut R) -> io::Result<Self> {
let t = u16::deserialize_reader(reader)?;
let n = u16::deserialize_reader(reader)?;
let i = Participant::deserialize_reader(reader)?;
ThresholdParams::new(t, n, i).map_err(|e| io::Error::other(format!("{e:?}")))
}
}
/// A method of interpolation.
#[derive(Clone, PartialEq, Eq, Debug, Zeroize)]
pub enum Interpolation<F: Zeroize + PrimeField> {