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Remove c-kzg (#8930)

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#7330


  Removes `c-kzg` from our `kzg` crate and rely fully on the `rust_eth_kzg` crate.

This removes the old `Blob` type entirely and instead handles `rust_eth_kzg::KzgBlobRef`s directly which allows us to avoid some extra stack allocations . Similarly, we make `Bytes32` and `Bytes48` type aliases rather than structs as this fits better with the new `rust_eth_kzg` API.


Co-Authored-By: Mac L <mjladson@pm.me>
This commit is contained in:
Mac L
2026-03-11 07:43:26 +02:00
committed by GitHub
parent 2bb79f43aa
commit 815040dc3c
14 changed files with 129 additions and 188 deletions
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18
crypto/kzg/src/trusted_setup.rs
View File

@@ -24,7 +24,7 @@ struct G1Point([u8; BYTES_PER_G1_POINT]);
struct G2Point([u8; BYTES_PER_G2_POINT]);
/// Contains the trusted setup parameters that are required to instantiate a
/// `c_kzg::KzgSettings` object.
/// `rust_eth_kzg::TrustedSetup` object.
///
/// The serialize/deserialize implementations are written according to
/// the format specified in the ethereum consensus specs trusted setup files.
@@ -155,19 +155,9 @@ fn strip_prefix(s: &str) -> &str {
}
}
/// Loads the trusted setup from JSON.
///
/// ## Note:
/// Currently we load both c-kzg and rust-eth-kzg trusted setup structs, because c-kzg is still being
/// used for 4844. Longer term we're planning to switch all KZG operations to the rust-eth-kzg
/// crate, and we'll be able to maintain a single trusted setup struct.
pub(crate) fn load_trusted_setup(
trusted_setup: &[u8],
) -> Result<(TrustedSetup, PeerDASTrustedSetup), Error> {
let ckzg_trusted_setup: TrustedSetup = serde_json::from_slice(trusted_setup)
.map_err(|e| Error::TrustedSetupError(format!("{e:?}")))?;
/// Loads the trusted setup from JSON bytes into a `rust_eth_kzg::TrustedSetup`.
pub(crate) fn load_trusted_setup(trusted_setup: &[u8]) -> Result<PeerDASTrustedSetup, Error> {
let trusted_setup_json = std::str::from_utf8(trusted_setup)
.map_err(|e| Error::TrustedSetupError(format!("{e:?}")))?;
let rkzg_trusted_setup = PeerDASTrustedSetup::from_json(trusted_setup_json);
Ok((ckzg_trusted_setup, rkzg_trusted_setup))
Ok(PeerDASTrustedSetup::from_json(trusted_setup_json))
}