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Shamir Secret Sharing refactor #8

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merged 7 commits into from
Apr 9, 2024
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supragya
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@supragya supragya commented Apr 6, 2024

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coderabbitai bot commented Apr 6, 2024

Walkthrough

The project has undergone significant enhancements, incorporating a new verifiable secret sharing scheme, optimizing dependency management across the workspace, and refining cryptographic functionalities. These changes streamline the development process, enhance security features, and improve the mathematical foundations of the project, particularly in secret sharing and polynomial operations.

Changes

Files Changes
Cargo.toml Added Fel87 module, updated workspace dependencies, introduced workspace=true configuration.
.../feldman-verifiable-secret-sharing/src/lib.rs Added Shamir secret sharing functionality, including point generation and exponentiation.
.../shamir-secret-sharing/Cargo.toml Modified to use workspace dependencies.
halo2-trials/Cargo.toml Updated dependencies to workspace members.
polynomial/src/lib.rs Added get_raw_coefficients method for polynomial coefficients retrieval.
.../shamir-secret-sharing/src/lib.rs Improved floating-point comparisons, added SecretShare struct and secret sharing methods.

🐇✨
In the realm of secrets, whispers, and codes,
A rabbit hopped, lightening heavy loads.
With Shamir's wisdom and Feldman's trust,
It crafted a world that's fair and just.
Through polynomials and points so bright,
It shared secrets, hidden from sight.
🌟🐾


Recent Review Status

Configuration used: CodeRabbit UI

Commits Files that changed from the base of the PR and between df6a3d2 and 4288cf0.
Files selected for processing (1)
  • .github/workflows/ci.yaml (2 hunks)
Additional comments not posted (3)
.github/workflows/ci.yaml (3)

22-24: Adding a matrix strategy for Rust versions in the lint job enhances testing across different environments. Good practice.


30-30: Switching to hecrj/setup-rust-action@v2 for Rust setup. Ensure compatibility and explore new features offered by this version.

Also applies to: 44-44, 64-64


32-32: Utilizing ${{ matrix.rust }} for dynamic Rust version selection in the workflow is a flexible and efficient approach.

Also applies to: 46-46

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Actionable comments posted: 0

Review Status

Configuration used: CodeRabbit UI

Commits Files that changed from the base of the PR and between c98ae2b and 79d1f66.
Files selected for processing (7)
  • Cargo.toml (1 hunks)
  • [Fel87]feldman-verifiable-secret-sharing/Cargo.toml (1 hunks)
  • [Fel87]feldman-verifiable-secret-sharing/src/lib.rs (1 hunks)
  • [Sha97]shamir-secret-sharing/Cargo.toml (1 hunks)
  • halo2-trials/Cargo.toml (1 hunks)
  • polynomial/Cargo.toml (1 hunks)
  • univariate-polynomial-iop-zerotest/Cargo.toml (1 hunks)
Files skipped from review due to trivial changes (2)
  • halo2-trials/Cargo.toml
  • univariate-polynomial-iop-zerotest/Cargo.toml
Additional comments not posted (4)
polynomial/Cargo.toml (1)

7-8: Ensure num-traits and nalgebra are declared in the workspace's Cargo.toml to avoid build issues.

[Fel87]feldman-verifiable-secret-sharing/Cargo.toml (1)

1-9: Ensure rand and rand_chacha are declared in the workspace's Cargo.toml to avoid build issues.

Cargo.toml (1)

6-27: Ensure that the versions of the newly added workspace dependencies are compatible with the project's requirements.

[Fel87]feldman-verifiable-secret-sharing/src/lib.rs (1)

1-53: Consider using integer arithmetic or a library designed for cryptographic operations instead of f64 to avoid precision issues and enhance security.

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Actionable comments posted: 0

Review Status

Configuration used: CodeRabbit UI

Commits Files that changed from the base of the PR and between 79d1f66 and 7efe310.
Files selected for processing (6)
  • Cargo.toml (1 hunks)
  • [Fel87]feldman-verifiable-secret-sharing/Cargo.toml (1 hunks)
  • [Sha97]shamir-secret-sharing/Cargo.toml (1 hunks)
  • halo2-trials/Cargo.toml (1 hunks)
  • polynomial/Cargo.toml (1 hunks)
  • univariate-polynomial-iop-zerotest/Cargo.toml (1 hunks)
Files skipped from review as they are similar to previous changes (5)
  • Cargo.toml
  • [Fel87]feldman-verifiable-secret-sharing/Cargo.toml
  • halo2-trials/Cargo.toml
  • polynomial/Cargo.toml
  • univariate-polynomial-iop-zerotest/Cargo.toml
Additional comments not posted (1)
[Sha97]shamir-secret-sharing/Cargo.toml (1)

7-9: The changes to use workspace dependencies for rand and rand_chacha align well with the PR's objectives to streamline dependency management and ensure consistency across the project. This is a good practice in Rust workspaces, especially for projects focusing on cryptographic protocols. The use of a path dependency for polynomial indicates it's a closely related package within the same workspace, which is appropriate.

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Actionable comments posted: 1

Review Status

Configuration used: CodeRabbit UI

Commits Files that changed from the base of the PR and between 7efe310 and ea11342.
Files selected for processing (4)
  • [Fel87]feldman-verifiable-secret-sharing/Cargo.toml (1 hunks)
  • [Fel87]feldman-verifiable-secret-sharing/src/lib.rs (1 hunks)
  • [Sha97]shamir-secret-sharing/src/lib.rs (1 hunks)
  • polynomial/src/lib.rs (1 hunks)
Files skipped from review as they are similar to previous changes (1)
  • [Fel87]feldman-verifiable-secret-sharing/src/lib.rs
Additional comments not posted (2)
[Fel87]feldman-verifiable-secret-sharing/Cargo.toml (1)

1-13: LGTM! The package metadata is correctly specified, and dependencies are appropriately managed, with workspace-level versions for most dependencies and a relative path for the local polynomial package. This setup promotes consistency and ease of dependency management across the project.

[Sha97]shamir-secret-sharing/src/lib.rs (1)

43-43: LGTM! Using abs() for floating-point comparisons is appropriate. Consider adding a comment to explain the choice of the comparison threshold (0.0000001) to help future maintainers understand the rationale.

Comment on lines 49 to 59
impl <T> Polynomial<T>
where
T: Clone {
/// Get raw coefficients
pub fn get_raw_coefficients(&self) -> Vec<T> {
match &self.repr {
PolynomialRepr::Points(_points) => unimplemented!(),
PolynomialRepr::Roots(_root) => unimplemented!(),
PolynomialRepr::Coeff(coeffs) => coeffs.to_vec(),
}
}
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Consider refactoring get_raw_coefficients to return a Result or an Option instead of using unimplemented!(), which causes a panic. This change would improve error handling and make the API more robust and user-friendly.

- pub fn get_raw_coefficients(&self) -> Vec<T> {
+ pub fn get_raw_coefficients(&self) -> Result<Vec<T>, &'static str> {
  match &self.repr {
      PolynomialRepr::Points(_points) => Err("Raw coefficients are not available for Points representation."),
      PolynomialRepr::Roots(_root) => Err("Raw coefficients are not available for Roots representation."),
-     PolynomialRepr::Coeff(coeffs) => coeffs.to_vec(),
+     PolynomialRepr::Coeff(coeffs) => Ok(coeffs.to_vec()),
  }
}

Committable suggestion

‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation.

Suggested change
impl <T> Polynomial<T>
where
T: Clone {
/// Get raw coefficients
pub fn get_raw_coefficients(&self) -> Vec<T> {
match &self.repr {
PolynomialRepr::Points(_points) => unimplemented!(),
PolynomialRepr::Roots(_root) => unimplemented!(),
PolynomialRepr::Coeff(coeffs) => coeffs.to_vec(),
}
}
impl <T> Polynomial<T>
where
T: Clone {
/// Get raw coefficients
pub fn get_raw_coefficients(&self) -> Result<Vec<T>, &'static str> {
match &self.repr {
PolynomialRepr::Points(_points) => Err("Raw coefficients are not available for Points representation."),
PolynomialRepr::Roots(_root) => Err("Raw coefficients are not available for Roots representation."),
PolynomialRepr::Coeff(coeffs) => Ok(coeffs.to_vec()),
}
}

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Actionable comments posted: 0

Review Status

Configuration used: CodeRabbit UI

Commits Files that changed from the base of the PR and between ea11342 and 21c7ebc.
Files selected for processing (2)
  • [Fel87]feldman-verifiable-secret-sharing/src/lib.rs (1 hunks)
  • [Sha97]shamir-secret-sharing/src/lib.rs (1 hunks)
Files skipped from review as they are similar to previous changes (2)
  • [Fel87]feldman-verifiable-secret-sharing/src/lib.rs
  • [Sha97]shamir-secret-sharing/src/lib.rs

@supragya supragya changed the title [Fel87] Feldman's verifyable secret sharing Shamir Secret Sharing refactor Apr 9, 2024
@supragya supragya merged commit a9c9566 into main Apr 9, 2024
8 checks passed
@supragya supragya deleted the supragya/feldman-secret-sharing branch April 9, 2024 07:53
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