scroll-tech / scroll-tech/zkvm-prover

Verify a batch of KZG proofs

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Dominant language
Rust
Stars
33
Forks
14
PR merge metrics
No merged PRs in 30d

Description

At the moment, the batch circuit's blob consistency module exposes functionality to verify a single KZG proof via the verify_kzg_proof method.

We would like to add functionality to verify a batch of KZG proofs:

/// Request to verify a single KZG proof
struct VerifyKzg {
    /// random point of evaluation
    z: Scalar,
    /// evaluation of the blob polynomial evaluated at `z`
    y: Scalar,
    /// KZG commitment
    commitment: G1Affine,
    /// KZG proof
    proof: G1Affine,
}

/// Alias for request to verify a batch of KZG proofs
type BatchVerifyKzg = Vec<VerifyKzg>;

/// Verify a batch of KZG proofs
pub fn verify_kzg_proof_batch(input: &BatchVerifyKzg) -> bool {
    // refer: https://github.com/ethereum/consensus-specs/blob/dev/specs/deneb/polynomial-commitments.md#verify_kzg_proof_batch
    todo!()
}

The verify_kzg_proof_batch should implement deneb specs as per verify_kzg_proof_batch.

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start in crates/types/batch/src/blob_consistency/openvm.rs at the existing verify_kzg_proof method, then read the Deneb polynomial-commitments specification linked in the issue. The work is complete when verify_kzg_proof_batch accepts the shown batch request and implements the specification's batch verification behavior.

Written by the indexing model from the issue text.

Assessment

Tech stack
rust
Domain
blockchain, cryptography
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
45/100

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