Add some core modules and new features #18
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Some common crypto utilities, signatures, verify, and hash functions for elliptic curve.
This module contains implementations of a verifiable random function, currently only ECVRF. VRFs can be used in the consensus protocol for leader election.
And tee_vlc module verifiable logic clock is an implementation of Chronos's TEE backend.
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Caution Review failedThe pull request is closed. WalkthroughThe changes encompass the addition of new crates and modules within a Rust project, enhancing its functionality in areas such as cryptography, secure enclaves, and verifiable logic clocks. Key modifications include the introduction of new dependencies, structural changes to existing modules, and improvements to naming conventions for consistency. Additionally, several files have been created to facilitate asynchronous operations and testing, while existing files have been renamed for clarity and organization. Changes
Sequence Diagram(s)sequenceDiagram
participant User
participant NitroEnclavesClock
participant Clocked
User->>NitroEnclavesClock: Request clock update
NitroEnclavesClock->>Clocked: Verify clock integrity
Clocked-->>NitroEnclavesClock: Return verification result
NitroEnclavesClock-->>User: Send updated clock
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Actionable comments posted: 39
Outside diff range and nitpick comments (25)
demos/tee_vlc/src/main.rs (1)
5-7: Consider making the port number configurable.The port number
5006is currently hardcoded in therunmethod call. To improve flexibility and configurability, consider making the port number a command-line argument or an environment variable that can be set at runtime.Here's an example of how you could make the port number configurable using a command-line argument:
use std::env; // ... async fn main() -> anyhow::Result<()> { let port = env::args() .nth(1) .and_then(|arg| arg.parse().ok()) .unwrap_or(5006); NitroEnclavesClock::run(port).await }In this example, the port number is retrieved from the first command-line argument using
env::args().nth(1). If the argument is present and can be parsed as a valid port number, it is used; otherwise, the default value of5006is used.demos/tee_vlc/image/run.sh (1)
4-4: Consider adding error handling for missing EIF file.The script assumes that the EIF file
app.eifexists in the same directory as the script. If the file is not found, thenitro-clicommand will fail without providing a clear error message to the user.To improve error handling, you can add a check for the existence of the EIF file before running the
nitro-clicommand. Here's an example:#!/usr/bin/env bash +EIF_PATH="app.eif" + +if [ ! -f "$EIF_PATH" ]; then + echo "Error: EIF file not found at $EIF_PATH" + exit 1 +fi + if [ "$1" = "debug" ]; then - nitro-cli run-enclave --cpu-count 2 --memory 2048 --enclave-cid 16 --eif-path app.eif --attach-console + nitro-cli run-enclave --cpu-count 2 --memory 2048 --enclave-cid 16 --eif-path "$EIF_PATH" --attach-console else - nitro-cli run-enclave --cpu-count 2 --memory 2048 --enclave-cid 16 --eif-path app.eif + nitro-cli run-enclave --cpu-count 2 --memory 2048 --enclave-cid 16 --eif-path "$EIF_PATH" fiThis modification checks for the existence of the EIF file using the
-fflag before running thenitro-clicommand. If the file is not found, it prints an error message and exits with a non-zero status code.Also applies to: 6-6
crates/types/src/raw_wrapper.rs (1)
1-32: Excellent work on thePayloadstruct and itsDebugimplementation!The
Payloadstruct provides a robust and flexible wrapper for byte vectors, enhancing their usability by deriving several useful traits. The customDebugimplementation is well-designed, providing a dual approach for formatting the contents as either a UTF-8 string or a hexadecimal representation, ensuring meaningful output for logging and debugging purposes.A few suggestions for further improvement:
Consider adding a
From<Vec<u8>>implementation to allow easy conversion from aVec<u8>to aPayload. This would provide a convenient way to create aPayloadinstance from an existing byte vector.The
Debugimplementation could be further optimized by using thefmt::Debugimplementation ofVec<u8>directly when the contents are not valid UTF-8. This would eliminate the need for manual hexadecimal formatting and thetake(32)limitation. For example:impl Debug for Payload { fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { if let Ok(s) = std::str::from_utf8(&self.0) { write!(f, "Payload({:?})", s) } else { write!(f, "Payload({:?})", self.0) } } }
- Consider adding documentation comments (
///) to thePayloadstruct and itsDebugimplementation to provide clear explanations of their purpose and behavior. This will enhance the code's readability and make it easier for other developers to understand and use thePayloadtype.Overall, the
Payloadstruct and itsDebugimplementation are well-designed and provide a solid foundation for working with byte vectors in a more expressive and convenient manner. Great job!demos/test_conflict/src/lib.rs (2)
4-4: Naming convention for the struct.The renaming of the struct to
_VectorClocksuggests an intention to indicate that it is private or to avoid naming conflicts. This is a common convention in Rust to prefix private items with an underscore.However, it's important to ensure that this naming convention is consistently applied throughout the codebase and aligns with the project's coding guidelines.
Line range hint
8-38: Naming convention for the methods.The renaming of the methods to prefix with an underscore (
_new,_get_version,_update_version, and_has_conflict) is consistent with the struct renaming and suggests an intention to indicate that they are private or to avoid naming conflicts.This naming convention is commonly used in Rust to denote private items. However, it's important to ensure that this convention is consistently applied throughout the codebase and aligns with the project's coding guidelines.
crates/vrf/src/sample.rs (2)
20-25: LGTM with a minor typo fix!The threshold calculation logic is correct and handles large numbers using
BigUintoperations.Please fix the typo in the comment:
- // percision is based at bit + // precision is based at bit
33-54: LGTM with a suggestion to add more test cases!The test function correctly tests the functionality of the
Samplerstruct and its methods. It covers a specific scenario where thevrf_outputdoes not meet the threshold for a target probability of 0.1.To improve the test coverage, consider adding more test cases to cover different scenarios, such as:
- Test cases where the
vrf_outputmeets the threshold for different target probabilities.- Test cases with different
precisionvalues to ensure theSamplerstruct works correctly with various precisions.- Test cases with invalid hexadecimal strings to ensure the
hex_to_biguintmethod handles errors gracefully.demos/tee_vlc/src/bin/run-solo-vlc-enclave.rs (1)
3-71: LGTM with minor suggestions!The
mainfunction is well-structured and follows a clear flow of installing packages, building the artifact, copying the artifact, building the Docker image, creating the enclave image file, and running the enclave. The use oftokio::process::Commandis appropriate for executing shell commands asynchronously, and the error handling usinganyhow::ensure!is correct.Here are some minor suggestions to improve the code:
- Use
format!instead of string concatenation to build the shell commands. This makes the code more readable and maintainable.- Use
item.as_deref()instead ofitem.clone()to avoid unnecessary cloning.Apply this diff to implement the suggestions:
let status = Command::new("sh") .arg("-c") - .arg( - String::from("sudo dnf install -y tmux htop openssl-devel perl docker-24.0.5-1.amzn2023.0.3 aws-nitro-enclaves-cli aws-nitro-enclaves-cli-devel") - + " && sudo usermod -aG ne ec2-user" - + " && sudo usermod -aG docker ec2-user" - + " && sudo systemctl restart docker" - + " && sudo systemctl restart nitro-enclaves-allocator.service" - + " && sudo systemctl enable --now nitro-enclaves-allocator.service" - + " && sudo systemctl enable --now docker" - ) + .arg(format!( + "sudo dnf install -y tmux htop openssl-devel perl docker-24.0.5-1.amzn2023.0.3 aws-nitro-enclaves-cli aws-nitro-enclaves-cli-devel \ + && sudo usermod -aG ne ec2-user \ + && sudo usermod -aG docker ec2-user \ + && sudo systemctl restart docker \ + && sudo systemctl restart nitro-enclaves-allocator.service \ + && sudo systemctl enable --now nitro-enclaves-allocator.service \ + && sudo systemctl enable --now docker" + )) .status() .await?; anyhow::ensure!(status.success()); let status = Command::new("cp") .arg("target/x86_64-unknown-linux-musl/artifact/tee_vlc") - .arg(item.clone().ok_or(anyhow::format_err!("missing destination path"))?) + .arg(item.as_deref().ok_or(anyhow::format_err!("missing destination path"))?) .status() .await?; anyhow::ensure!(status.success()); let status = Command::new("sh") .arg("-c") .arg(format!( "cd {} && docker build . -t tee_vlc && nitro-cli build-enclave --docker-uri tee_vlc:latest --output-file tee_vlc.eif", - item.clone().ok_or(anyhow::format_err!("missing destination path"))? + item.as_deref().ok_or(anyhow::format_err!("missing destination path"))? )) .status() .await?; anyhow::ensure!(status.success()); let status = Command::new("sh") .arg("-c") .arg(format!( "cd {} && nitro-cli run-enclave --cpu-count 2 --memory 2048 --enclave-cid 16 --eif-path tee_vlc.eif", - item.ok_or(anyhow::format_err!("missing destination path"))? + item.as_deref().ok_or(anyhow::format_err!("missing destination path"))? )) .status() .await?; anyhow::ensure!(status.success());crates/crypto/src/recovery.rs (1)
6-20: Add documentation comments to public functions for improved clarity.The public functions lack documentation comments. Adding
///comments to explain the purpose, parameters, and return values of each function will enhance code maintainability and usability for other developers.Example:
/// Converts a public key in hexadecimal format to an Ethereum address. /// /// # Arguments /// /// * `public_key_hex` - A string slice that holds the public key in hex format. /// /// # Returns /// /// A `String` representing the Ethereum address derived from the public key. pub fn public_key_to_address(public_key_hex: &str) -> Result<String, hex::FromHexError> { // function body }Also applies to: 22-28, 30-37, 39-46, 48-67, 69-82
crates/enclaves/src/nitro_secure.rs (2)
6-7: Enhance documentation for better clarity and grammarThe comments for
HandleFnat lines 6-7 contain grammatical errors and lack clarity. Improving these comments will enhance maintainability and readability of the code.Consider rephrasing the comments as follows:
- /// HandleCallbackFn is running handler behind in vsock. - /// params: input_buf, nsm (nitro secure module), pcrs, write_sender(reply sender) + /// `HandleFn` is a callback function type used to handle incoming data over vsock. + /// + /// Parameters: + /// - `input_buf`: The received data buffer. + /// - `nsm`: An `Arc` to the Nitro Secure Module instance. + /// - `pcrs`: An array containing PCR (Platform Configuration Register) data. + /// - `write_sender`: An unbounded sender for sending replies back to the client.
131-131: Use consistent logging mechanism instead ofeprintln!At line 131,
eprintln!is used to log an error, while elsewhere in the code, thetracingcrate is utilized (e.g.,warn!). For consistency and better control over logging levels, consider replacingeprintln!withtracing::error!.Apply this diff to replace
eprintln!withtracing::error!:- eprintln!("Error: {:?}", err); + tracing::error!("Error: {:?}", err);demos/tee_vlc/src/bin/call_vlc_client.rs (2)
31-37: Clarify the purpose of the spawned task withpendingThe spawned task at lines 31-37 awaits indefinitely with
pending::<()>().await;, so thedrop(update_sender)statement will never be executed. Sincedrop(update_sender)will not be reached, consider refactoring to clearly indicate the intention. If the goal is to keepupdate_senderalive to prevent the receiver from closing, you might simplify or document this behavior for better clarity.
51-64: Unusedlinesvariable in concurrency benchmarkingIn the branch where
num_concurrentis provided (lines 51-64), thelinesvariable is populated with benchmarking data but is never printed or used, as theprintln!("{lines}")statement at line 64 is commented out. Consider printing the accumulatedlinesor removing it if it's unnecessary to avoid confusion and improve code readability.crates/vrf/src/traits.rs (2)
83-90: Simplify error handling infrom_encoded_stringfor clarity.The current implementation uses
.or(Err(CryptoMaterialError::DeserializationError)), which may suppress the original error context. Usingmap_errprovides clearer intent and preserves the original error.Apply this diff to streamline the error handling:
fn from_encoded_string(encoded_str: &str) -> std::result::Result<Self, CryptoMaterialError> { - let bytes_out = ::hex::decode(encoded_str); - // We defer to `try_from` to make sure we only produce valid keys. - bytes_out - // We reinterpret a failure to serialize: key is mangled someway. - .or(Err(CryptoMaterialError::DeserializationError)) - .and_then(|ref bytes| Self::try_from(bytes)) + let bytes_out = ::hex::decode(encoded_str) + .map_err(|_| CryptoMaterialError::DeserializationError)?; + Self::try_from(&bytes_out) }
92-94: Remove unnecessaryResultinto_encoded_stringmethod.Since
to_bytes()and::hex::encodedo not produce errors, the method can returnStringdirectly instead ofResult<String, failure::Error>.Apply this diff to simplify the method signature and implementation:
- fn to_encoded_string(&self) -> Result<String, failure::Error> { - Ok(::hex::encode(&self.to_bytes())) + fn to_encoded_string(&self) -> String { + ::hex::encode(&self.to_bytes()) }crates/vrf/src/ecvrf.rs (2)
45-54: Update deprecatedfailurecrate usageThe
failurecrate is deprecated. It's recommended to usethiserrororanyhowfor error handling to stay up-to-date with current Rust practices.Consider migrating to
thiserrororanyhow:- use failure::bail; - use failure::Error; + use anyhow::{bail, Error};Update the error types and handling throughout the code accordingly.
45-54: Remove unused imports to clean up the codeSome imported modules and traits may not be used in the code. Removing unused imports can reduce clutter and potential confusion.
Review the imports and remove those that are unnecessary, such as:
- use derive_deref::Deref;Ensure that all remaining imports are required for the code to compile.
crates/vlc/src/ordinary_clock.rs (5)
1-1: Typographical Error in CommentThe comment at line 1 contains a grammatical error. It should read: "This clock uses the
BTreeMapas its core data structure."Apply this diff to correct the comment:
-//! This clock use the BTreeMap as its core data structure. +//! This clock uses the `BTreeMap` as its core data structure.
81-85: Inaccurate Comment Regarding Data SerializationThe comment on line 84 mentions updating the hasher with a JSON string, but
bincodeis used for serialization, which produces binary data. This could be misleading to readers.Apply this diff to correct the comment:
-// Update the hasher with the JSON string +// Update the hasher with the serialized binary data
189-189: Improve Clarity of CommentThe comment on line 189 is ambiguous and contains grammatical errors. Rewriting it improves comprehension.
Apply this diff to enhance the comment:
-// Tips: when clock is hashmap, this serialize and sha256 can't reproduce, every time is different. +// Note: When using a HashMap, serialization and SHA256 hashing yield different results each time due to the non-deterministic ordering.
193-195: Provide Justification for Ignored TestThe test
hash_big_clock_sha256is marked with#[ignore]without explaining why. Adding a reason helps others understand the context.Include a comment explaining why the test is ignored:
#[test] #[ignore] +// Ignored because this test is resource-intensive and intended for manual execution only. fn hash_big_clock_sha256() -> anyhow::Result<()> {
318-319: Performance Impact Due to Frequent AssertionsIn the
stress_verify_updatetest, the assertion on line 319 is inside a tight loop, which could affect performance during stress testing.If the assertion is necessary, you might want to conditionally compile it for debug builds or measure its impact on performance.
crates/crypto/src/core.rs (2)
242-247: Clarify the security implications ofCryptoFlavor::PlainIn the
CryptoFlavor::Plainvariant within thenew_randommethod, the public key is derived directly from the secret key by converting it to a hex string. This could pose security risks if used beyond testing scenarios. Please document that this variant is intended only for testing or non-secure use cases to prevent accidental misuse.
525-536: Add assertions in tests to verify outcomesIn the
verify_batchedtest, the result ofverify_batchis not being checked. To ensure the batch verification functionality works as intended, consider adding an assertion to validate the result.Apply the following diff to add an assertion:
fn verify_batched() -> anyhow::Result<()> { let message = "hello"; let crypto = (0..4usize) .map(|i| Crypto::new_hardcoded(4, i, CryptoFlavor::Schnorrkel)) .collect::<anyhow::Result<Vec<_>>>()?; let verifiable = crypto .iter() .map(|crypto| crypto.sign(message)) .collect::<Vec<_>>(); - crypto[0].verify_batch(&[0usize, 1, 2, 3], &verifiable) + assert!(crypto[0].verify_batch(&[0usize, 1, 2, 3], &verifiable).is_ok()); + Ok(()) }demos/tee_vlc/src/nitro_clock.rs (1)
79-80: Remove commented-out debugging codeThere are several instances of commented-out
println!andio::stdout().flush()statements. Removing these can clean up the codebase and prevent confusion.Apply this diff to remove the commented-out code:
-// println!("Received buffer: {:?}", buf); -// let _ = io::stdout().flush();Repeat similar changes for the other specified lines.
Also applies to: 94-95, 111-112, 122-123, 140-141, 145-146
Review details
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Files selected for processing (42)
- Cargo.toml (1 hunks)
- LICENSE (1 hunks)
- crates/README.md (1 hunks)
- crates/crypto/Cargo.toml (1 hunks)
- crates/crypto/src/core.rs (1 hunks)
- crates/crypto/src/lib.rs (1 hunks)
- crates/crypto/src/recovery.rs (1 hunks)
- crates/enclaves/Cargo.toml (1 hunks)
- crates/enclaves/src/lib.rs (1 hunks)
- crates/enclaves/src/nitro_secure.rs (1 hunks)
- crates/types/Cargo.toml (1 hunks)
- crates/types/src/configuration.rs (1 hunks)
- crates/types/src/lib.rs (1 hunks)
- crates/types/src/raw_wrapper.rs (1 hunks)
- crates/vlc/Cargo.toml (1 hunks)
- crates/vlc/src/lib.rs (1 hunks)
- crates/vlc/src/ordinary_clock.rs (1 hunks)
- crates/vrf/Cargo.toml (1 hunks)
- crates/vrf/src/ecvrf.rs (1 hunks)
- crates/vrf/src/lib.rs (1 hunks)
- crates/vrf/src/sample.rs (1 hunks)
- crates/vrf/src/test_utils.rs (1 hunks)
- crates/vrf/src/traits.rs (1 hunks)
- crates/vrf/src/unit_tests/mod.rs (1 hunks)
- crates/vrf/src/unit_tests/vrf_test.rs (1 hunks)
- demos/README.md (1 hunks)
- demos/coll_tx/Cargo.toml (1 hunks)
- demos/coll_tx/src/simple_utxo.rs (1 hunks)
- demos/tee_vlc/Cargo.toml (1 hunks)
- demos/tee_vlc/README.md (1 hunks)
- demos/tee_vlc/image/Dockerfile (1 hunks)
- demos/tee_vlc/image/run.sh (1 hunks)
- demos/tee_vlc/src/bin/call_vlc_client.rs (1 hunks)
- demos/tee_vlc/src/bin/run-solo-vlc-enclave.rs (1 hunks)
- demos/tee_vlc/src/lib.rs (1 hunks)
- demos/tee_vlc/src/main.rs (1 hunks)
- demos/tee_vlc/src/nitro_clock.rs (1 hunks)
- demos/test_conflict/src/lib.rs (2 hunks)
- demos/vlc_dag/Cargo.toml (1 hunks)
- demos/vlc_dag/src/db_client/lldb_client.rs (2 hunks)
- demos/vlc_dag/src/db_client/lldb_test.rs (4 hunks)
- demos/vlc_dag/src/lib.rs (6 hunks)
Files skipped from review due to trivial changes (10)
- LICENSE
- crates/types/src/configuration.rs
- crates/vlc/src/lib.rs
- demos/coll_tx/Cargo.toml
- demos/coll_tx/src/simple_utxo.rs
- demos/tee_vlc/image/Dockerfile
- demos/vlc_dag/Cargo.toml
- demos/vlc_dag/src/db_client/lldb_client.rs
- demos/vlc_dag/src/db_client/lldb_test.rs
- demos/vlc_dag/src/lib.rs
Additional context used
LanguageTool
demos/tee_vlc/README.md
[grammar] ~7-~7: “Repository” is a singular noun. It appears that the verb form is incorrect.
Context: ...epare environment Now, this repository use the aws nitro enclave as its trust exec...(PCT_SINGULAR_NOUN_PLURAL_VERB_AGREEMENT)
[typographical] ~31-~31: Consider adding a comma here.
Context: ...init_env.sh ./init_env.sh ``` Remember please re-run the script when you update the `...(PLEASE_COMMA)
Additional comments not posted (61)
crates/enclaves/src/lib.rs (1)
1-1: Approve the addition of thenitro_securemodule.The declaration of the
nitro_securemodule is syntactically correct. Based on the module name, it seems to be intended for secure operations using Nitro Enclaves.However, to better understand the module's purpose and its impact on the overall system, please provide more information about its intended functionality and how it interacts with other components. It would also be helpful to see the module's internal implementation to assess its correctness and potential security implications.
crates/crypto/src/lib.rs (2)
1-1: LGTM!The declaration of the public
coremodule is syntactically correct and aligns with the PR objective of introducing new cryptographic functionalities.
2-2: LGTM!The declaration of the public
recoverymodule is syntactically correct and aligns with the PR objective of introducing new cryptographic functionalities.crates/types/src/lib.rs (2)
1-1: LGTM!The introduction of the
raw_wrappermodule is a good architectural decision. It promotes modularity and separation of concerns by encapsulating low-level operations and ensuring safe interactions with underlying data structures.
2-2: LGTM!The introduction of the
configurationmodule is a good architectural decision. It promotes modularity and separation of concerns by managing application settings or parameters, allowing for flexible configuration management.demos/tee_vlc/src/main.rs (1)
1-7: LGTM!The
mainfunction is well-structured and follows the idiomatic Rust style for an asynchronous entry point. It is conditionally compiled when the "nitro-enclaves" feature is enabled, ensuring that it is only included in the appropriate build configuration. The function calls therunmethod ofNitroEnclavesClock, which suggests that the application is designed to operate within a Nitro Enclave environment for secure timekeeping or synchronization purposes.crates/types/Cargo.toml (2)
1-4: LGTM!The
[package]section is well-defined with a clear package name, initial version, and the latest stable Rust edition.
6-10: Dependencies look good!The dependencies are relevant for trait derivation and serialization. The versions are pinned for reproducibility, and enabling the "derive" feature for
serdeis a common and useful practice.demos/tee_vlc/image/run.sh (1)
1-7: LGTM!The bash script is well-structured and provides a convenient way to run the Nitro Enclave with different execution modes. The conditional structure enhances usability by allowing users to easily switch between debug and standard execution modes.
demos/tee_vlc/src/lib.rs (3)
1-2: LGTM!The module declaration is syntactically correct. The name
nitro_clocksuggests it might contain functionality related to a specific type of clock, possibly used in the Nitro framework.
5-9: LGTM!The
Clockedstruct provides a generic container for holding a clock value and an inner value. The use of generic type parameters allows flexibility in the types used for theclockandinnerfields. DerivingDebug,Serialize, andDeserializetraits enables useful capabilities for the struct.
11-13: LGTM!The
Verifytrait defines a clear contract for types that can verify their state against a clock. Theverify_clockmethod takes the necessary parameters and returns a result, allowing for error handling. The trait bounds ensure thread safety and a static lifetime for implementers.crates/vrf/Cargo.toml (2)
1-4: LGTM!The
[package]section is correctly defined with appropriate values for the package name, version, and edition.
6-22: Dependencies look good!The
[dependencies]section includes all the necessary dependencies for thevrfpackage, covering numerical operations, binary encoding, cryptography, serialization, and testing.The versions are properly specified, and the additional features for
ed25519-dalek,anyhow, andserdeare appropriately enabled.The included dependencies align well with the expected functionalities of a VRF package.
crates/vrf/src/lib.rs (4)
1-3: LGTM!The module-level documentation provides a clear and concise overview of the module's purpose, the specific VRF variant implemented, and its potential use case. It follows the Rust documentation conventions.
5-8: LGTM!The submodule declarations are well-organized and follow a logical structure. The names of the submodules clearly indicate their purposes, and they are declared as public, making them accessible to external code.
14-16: LGTM!The
addfunction is a simple and straightforward utility function that adds twousizevalues. It is declared as public, making it accessible to external code.
18-27: LGTM!The test module and the
it_workstest function are properly implemented. The test function covers a basic scenario and verifies the correctness of theaddfunction using theassert_eq!macro. The test module is wrapped in a#[cfg(test)]attribute, ensuring that it is only compiled during testing.crates/crypto/Cargo.toml (2)
1-4: LGTM!The package metadata looks good. The package name and version are appropriate for a new crypto package, and using the latest 2021 edition of Rust is a good practice.
6-21: Dependencies look good!The dependencies specified in the
Cargo.tomlfile are essential for implementing cryptographic functionalities within the Rust ecosystem. Here's a brief overview of their usage:
schnorrkelandsecp256k1: Essential for cryptographic operations like Schnorr signatures and elliptic curve cryptography.sha2,sha3,blake2, andhex: Necessary for hashing functionalities.serde,serde_json, andbincode: Required for serialization and deserialization of data structures.rand: Critical for random number generation in cryptographic applications.nix: Used for low-level system APIs, which may be necessary for certain cryptographic operations.primitive-types: Provides common types for Ethereum, which may be useful for interoperability with Ethereum-based systems.anyhow: Used for error handling, which is important for robust error management in the package.derive_moreandderive-where: Used for deriving common traits and conditional compilation, which can help reduce boilerplate code and improve code maintainability.Overall, the dependencies are well-chosen and cover the essential aspects required for a cryptographic package.
crates/enclaves/Cargo.toml (3)
1-4: LGTM!The package metadata is correctly defined with the appropriate name, initial version, and the latest stable edition of Rust.
6-7: LGTM!The "nitro-enclaves" feature is correctly defined with the appropriate optional dependencies. It provides flexibility to conditionally include the dependencies based on the project's requirements.
9-17: Dependencies look good, but be cautious with the external dependency.The dependencies are correctly specified with their respective versions and features. The included libraries provide essential functionality for the package.
However, sourcing the "aws-nitro-enclaves-attestation" dependency from a GitHub repository may introduce risks if the repository is not well-maintained or trusted. Ensure that the repository is reliable and actively maintained to mitigate potential issues.
To verify the reliability of the external dependency, run the following script:
Verification successful
External dependency appears legitimate but requires careful monitoring
Based on our investigation, the "aws-nitro-enclaves-attestation" repository shows signs of being a legitimate and maintained project:
- It contains essential files and directories expected in a Rust project.
- The latest commit was made on April 25, 2024, with the message "Reduce dependency," indicating recent maintenance.
- The repository is licensed under Apache-2.0, which is suitable for commercial use.
- It has 4 contributors, suggesting some level of collaboration.
However, there are some concerns:
- The repository has 0 stars, which might indicate limited community adoption.
- We encountered issues retrieving the full commit history, which warrants caution.
Recommendations:
- Proceed with using this dependency, but implement a strategy to regularly monitor its status and updates.
- Consider reaching out to the repository maintainers to clarify any concerns about the commit history.
- Evaluate alternatives periodically and be prepared to switch if issues arise.
Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Verify the reliability of the "aws-nitro-enclaves-attestation" repository. # Test 1: Check the repository's last commit date. Expect: Recent activity. gh api repos/neatsys/aws-nitro-enclaves-attestation | jq '.pushed_at' # Test 2: Check the repository's open issues count. Expect: Low count. gh api repos/neatsys/aws-nitro-enclaves-attestation | jq '.open_issues_count' # Test 3: Check the repository's stargazers count. Expect: Reasonable count. gh api repos/neatsys/aws-nitro-enclaves-attestation | jq '.stargazers_count'Length of output: 251
Script:
#!/bin/bash # Description: Gather additional information about the "aws-nitro-enclaves-attestation" repository. # Get repository details including license and description gh api repos/neatsys/aws-nitro-enclaves-attestation | jq '{license: .license.spdx_id, description: .description}' # Get total number of commits gh api repos/neatsys/aws-nitro-enclaves-attestation/commits?per_page=1 | jq '.[0].commit.tree.sha' | xargs -I {} gh api repos/neatsys/aws-nitro-enclaves-attestation/commits?sha={} | jq length # Get number of contributors gh api repos/neatsys/aws-nitro-enclaves-attestation/contributors | jq lengthLength of output: 557
Script:
#!/bin/bash # Description: Verify commit history and content of the "aws-nitro-enclaves-attestation" repository. # Get the latest commit information echo "Latest commit info:" gh api repos/neatsys/aws-nitro-enclaves-attestation/commits?per_page=1 | jq '.[0] | {sha: .sha, date: .commit.author.date, message: .commit.message}' # List files in the root directory of the repository echo "Files in root directory:" gh api repos/neatsys/aws-nitro-enclaves-attestation/contents | jq '[.[] | {name: .name, type: .type}]' # Get commit count using a different method echo "Commit count:" gh api repos/neatsys/aws-nitro-enclaves-attestation/commits?per_page=1 | jq '.[0].commit.tree.sha' | xargs -I {} gh api repos/neatsys/aws-nitro-enclaves-attestation/commits?sha={}&per_page=1 | jq '.[0].parents | length + 1'Length of output: 1073
Cargo.toml (1)
12-15: LGTM! The changes enhance the project's modularity and functionality.The addition of new crates (
vrf,crypto,enclaves, andtypes) and the new demo entry (tee_vlc) suggest an expansion of the project's capabilities. The renaming of demo entries (coll-txandvlc-dag) also improves consistency in naming conventions.As the project grows in complexity, consider the following suggestions to manage the increased complexity:
- Ensure that each crate and demo entry has a clear purpose and is well-documented.
- Maintain a consistent coding style and naming convention across all crates and demo entries.
- Regularly review and update dependencies to ensure compatibility and security.
- Consider using a dependency management tool like
cargo-editto simplify the process of adding and updating dependencies.- Use a continuous integration (CI) system to automatically build and test the project on each commit to catch potential issues early.
Also applies to: 17-19
crates/vlc/Cargo.toml (14)
9-9: LGTM!The
sha2library is a reliable choice for cryptographic hashing. The specified version0.10.8is a stable release.
10-10: LGTM!The
sha3library is a good addition alongsidesha2for comprehensive cryptographic hashing support. The specified version0.10.1is a stable release.
11-11: LGTM!The
randlibrary is the go-to choice for random number generation in Rust. The specified version0.8.5is a stable release.
12-12: LGTM!The
rand_distrlibrary is a valuable addition torandfor generating random numbers from various probability distributions. The specified version0.4.3is a stable release.
13-13: LGTM!The
bincodelibrary is a good choice for efficient binary serialization and deserialization. The specified version1.3.3is a stable release.
14-14: LGTM!The
tracinglibrary is an excellent choice for instrumenting Rust programs and collecting diagnostic information. The specified version0.1.40is a stable release.
15-15: LGTM!The
futureslibrary is essential for asynchronous programming in Rust. The specified version0.3.30is a stable release.
16-16: LGTM!The
num_cpuslibrary is handy for optimizing performance based on the available CPU cores. The specified version1.13.1is a stable release.
17-17: LGTM!The
derive_morelibrary is a convenient addition for deriving common traits. The specified version0.99.17is a stable release.
18-18: LGTM!The
derive-wherelibrary is a useful tool for adding where clauses to struct and enum definitions. The specified version1.2.7is a stable release.
20-20: LGTM!The
anyhowlibrary is a great choice for flexible and easy error handling. Thebacktracefeature is a valuable addition for improved debugging. The specified version1.0.79is a stable release.
21-21: LGTM!The
tracing-subscriberlibrary is a valuable addition totracingfor implementing and composing subscribers. The specified version0.3.18is a stable release.
22-22: LGTM!The
secp256k1library is a robust implementation of the secp256k1 elliptic curve cryptography algorithm. The enabled features (rand-std,serde,recovery) provide useful functionality for integration with other libraries and key recovery. The specified version0.29.0is a stable release.
23-23: LGTM!The
tokiolibrary is an excellent choice for an asynchronous runtime in Rust. The enabled features provide a comprehensive set of tools for building scalable and concurrent applications. The specified version1.35.1is a stable release.crates/vrf/src/unit_tests/mod.rs (1)
12-26: Excellent work on implementing theuniform_keypair_strategyfunction!The function is well-designed and provides a reusable strategy for generating uniformly random keypairs using the
proptestlibrary. The use of property-based testing is a great choice, as it allows for generating a wide range of test cases and can help uncover edge cases, improving the overall robustness of the code being tested.The function signature and generic type constraints are well-defined, ensuring that the input types meet the necessary requirements for serialization and key derivation. Generating a random seed and initializing the
StdRngwith it ensures deterministic keypair generation for a given seed, which is crucial for reproducibility in testing.The
no_shrinkdirective is appropriately used to prevent the generated keypair from being altered during testing, as shrinking the keypair would result in a different keypair being generated, which is not useful for testing cryptographic operations.Overall, this function is a valuable addition to the testing infrastructure and will promote code reuse, consistency, and robustness in testing cryptographic operations.
demos/tee_vlc/README.md (1)
33-46: LGTM!The instructions for running the VLC TEE images and testing the setup are clear and well-formatted. Great job!
demos/tee_vlc/Cargo.toml (3)
1-4: LGTM!The
[package]section correctly defines the package metadata with appropriate values forname,version, andedition.
6-11: LGTM!The
[features]section correctly defines theordinaryandnitro-enclavesfeatures with appropriate dependencies. The feature names are descriptive and their purposes are clear.
14-35: LGTM!The
[dependencies]section comprehensively defines the required dependencies for thetee_vlcpackage. The dependencies are versioned, and optional features are appropriately enabled. The use of local path dependencies indicates a well-structured project.crates/vrf/src/test_utils.rs (4)
7-15: LGTM!The
KeyPairstruct provides a clean and flexible way to manage cryptographic key pairs. The generic parameters and the constraint on the public key ensure that the struct can handle various key types while maintaining the important property that the public key can be derived from the private key.
17-27: LGTM!The
Fromtrait implementation forKeyPairis a nice addition. It allows easy creation of aKeyPairfrom just the private key, ensuring that the public key is always correctly derived. This enhances the usability of the struct.
29-41: LGTM!The
Uniformtrait implementation forKeyPairis a valuable addition for testing. It allows generating key pairs using a random number generator, ensuring that the public key is correctly derived from the randomly generated private key. This will be very useful in writing tests for functionality that depends on key pairs.
43-53: LGTM!The custom
Debugtrait implementation forKeyPairis a thoughtful addition. Serializing and concatenating the private and public keys and then encoding them in hexadecimal format provides a clear and concise representation of the key pair for debugging purposes. This will be very helpful in understanding and debugging issues related to key pairs.demos/test_conflict/src/lib.rs (1)
47-55: Test case updated to reflect the changes.The test case in the
testsmodule has been updated to use the renamed struct (_VectorClock) and methods (_new,_update_version, and_has_conflict). This ensures that the test case is in sync with the changes made to the struct and methods.The test logic and assertions remain unchanged, indicating that the core functionality of the
_VectorClockis preserved.crates/README.md (3)
23-27: LGTM!The new
enclavessection provides a clear and concise description of the module's purpose. The examples of TEEs are relevant and help clarify the module's scope.
28-31: LGTM!The new
cryptosection provides a clear and concise description of the module's purpose. The key functionalities, such as signatures, verification, and hash functions for elliptic curves, are clearly mentioned.
32-35: LGTM!The new
vrfsection provides a clear and concise description of the module's purpose. The description mentions that the module currently only contains the ECVRF implementation and provides context on the usage of VRFs in consensus protocols for leader election, which helps clarify the module's scope.crates/vrf/src/sample.rs (3)
4-7: LGTM!The struct definition is clear and concise. The derived traits are appropriate for the struct's purpose.
10-14: LGTM!The constructor function is straightforward and correctly initializes the
Samplerstruct with the providedprecisionvalue.
27-29: LGTM!The
meets_thresholdmethod correctly compares theoutputvalue with thethresholdvalue and returns the result.demos/README.md (1)
28-36: LGTM!The addition of the
tee_vlcmodule section to the README is a great improvement to the documentation. It provides a clear and concise overview of the module's purpose and features.Highlighting the use of AWS Nitro Enclaves as the trusted execution environment and the support for test cases instills confidence in the security and reliability of the module.
Overall, this change enhances the README's clarity and informativeness.
demos/tee_vlc/src/bin/run-solo-vlc-enclave.rs (1)
1-2: LGTM!The import statement is correct and necessary for executing shell commands asynchronously using Tokio.
crates/crypto/src/recovery.rs (1)
99-100: Avoid printing private keys in test output.Printing the private key can be a security risk, even in test code. It's advisable to avoid outputting sensitive information to the console.
[security]
Apply this diff to remove the private key from the output:
- println!("pri :{} \npub : {}", secret_key_hex, public_key_hex); + println!("Public key: {}", public_key_hex);crates/vrf/src/ecvrf.rs (2)
305-316: Verify the necessity of cofactor multiplication inOutput::fromIn
Output::from, thegammapoint is multiplied by the cofactor before hashing. According to the ECVRF specification, this step may not be required and could affect the output's correctness.Please verify whether the cofactor multiplication is necessary as per the ECVRF-ED25519-SHA512-TAI specification. Removing unnecessary operations can improve efficiency and ensure compliance with the standard.
159-161: Handle potential errors when decompressing inVRFPublicKey::try_fromIn
impl TryFrom<&[u8]> for VRFPublicKey, usingunwrap()may cause a panic if decompression fails. Handle this error explicitly to prevent unexpected panics.Apply this diff to handle errors:
- let point = compressed - .decompress() - .ok_or(CryptoMaterialError::DeserializationError)?; + let point = compressed.decompress() + .ok_or(CryptoMaterialError::DeserializationError)?;Likely invalid or redundant comment.
crates/crypto/src/core.rs (1)
294-300: Verify usage ofMessage::from_digestwithsecp256k1The function
secp256k1::Message::from_digestis used to create a message from the SHA-256 hash of the data. Ensure that this method correctly constructs aMessageobject compatible with the secp256k1 library requirements. Iffrom_digestis not standard, consider usingMessage::from_sliceinstead.Run the following script to check if
from_digestis a valid method:Verification successful
Usage of
Message::from_digestwithsecp256k1is validThe
secp256k1::Message::from_digestmethod is indeed used in the codebase, specifically incrates/crypto/src/core.rs. This confirms that it's a valid method for creating aMessageobject from a digest.However, consider the following points:
- In
crates/crypto/src/recovery.rs, a similar methodfrom_digest_sliceis used. You may want to verify if this is a more appropriate or newer alternative for your use case.- Always refer to the latest secp256k1 library documentation to ensure you're using the most up-to-date and recommended methods.
Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Verify if `from_digest` exists in `secp256k1::Message`. # Test: Search for `from_digest` method in the `secp256k1` crate. rg --type rust 'impl.*Message.*from_digest' -A 5Length of output: 50
Script:
#!/bin/bash # Description: Gather more information about secp256k1::Message and from_digest usage # Search for any mention of from_digest in relation to Message rg --type rust 'Message.*from_digest' # Look for the import statement of secp256k1::Message rg --type rust 'use.*secp256k1::Message' # Find the implementation of the sign function ast-grep --lang rust --pattern 'fn sign($$$) { $$$ }'Length of output: 829
demos/tee_vlc/src/nitro_clock.rs (1)
226-231: Verify the use of unit type()inVerifytrait implementationThe implementation of
Verify<()>forClocked<M, NitroEnclavesClock>uses the unit type(). Confirm whether this is intentional or if a more specific type is needed for context.
There was a problem hiding this comment.
Actionable comments posted: 12
Outside diff range and nitpick comments (4)
demos/tee_vlc/README.md (1)
31-31: Consider adding a comma to improve readability.-Remember please re-run the script when you update the `/etc/nitro_enclaves/allocator.yaml`. +Remember, please re-run the script when you update the `/etc/nitro_enclaves/allocator.yaml`.Tools
LanguageTool
[typographical] ~31-~31: Consider adding a comma here.
Context: ...init_env.sh ./init_env.sh ``` Remember please re-run the script when you update the `...(PLEASE_COMMA)
crates/vlc/src/ordinary_clock.rs (1)
120-122: Clarify the comment about the disabled check.The comment explaining the disabled check is somewhat unclear and uses tentative language. Providing a clear rationale helps maintainers understand the decision.
Consider rephrasing the comment for clarity:
-// disabling this check after the definition of genesis clock has been extended -// haven't revealed any bug with this assertion before, hopefully disabling it will not -// hide any bug in the future as well +// Disabled this check due to the extended definition of the genesis clock. +// Previous assertions did not reveal any bugs, but monitor for potential issues arising from this change.crates/vrf/src/traits.rs (1)
88-88: Typographical correction in the commentThe comment currently says "We reinterpret a failure to serialize," but it should be "We reinterpret a failure to deserialize" to correctly reflect the error handling in this context.
Apply this diff to correct the comment:
- // We reinterpret a failure to serialize: key is mangled someway. + // We reinterpret a failure to deserialize: key is mangled someway.demos/tee_vlc/src/nitro_clock.rs (1)
68-70: Simplify Dereferencing for Improved ReadabilityThe expression
&***user_datais complex and can be simplified usingas_deref(), which flattens theOptionand dereferences the content. This enhances code readability.Apply this diff to simplify the expression:
anyhow::ensure!( - document.user_data.as_ref().map(|user_data| &***user_data) + document.user_data.as_deref() == Some(&self.plain.sha256().to_fixed_bytes()[..]) );Ensure the comparison remains accurate after the change.
Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
Files selected for processing (12)
- LICENSE (1 hunks)
- crates/crypto/src/recovery.rs (1 hunks)
- crates/enclaves/src/nitro_secure.rs (1 hunks)
- crates/vlc/src/ordinary_clock.rs (1 hunks)
- crates/vrf/Cargo.toml (1 hunks)
- crates/vrf/src/ecvrf.rs (1 hunks)
- crates/vrf/src/sample.rs (1 hunks)
- crates/vrf/src/traits.rs (1 hunks)
- crates/vrf/src/unit_tests/vrf_test.rs (1 hunks)
- demos/tee_vlc/README.md (1 hunks)
- demos/tee_vlc/src/nitro_clock.rs (1 hunks)
- demos/test_conflict/src/lib.rs (2 hunks)
Files skipped from review as they are similar to previous changes (5)
- LICENSE
- crates/enclaves/src/nitro_secure.rs
- crates/vrf/Cargo.toml
- crates/vrf/src/sample.rs
- demos/test_conflict/src/lib.rs
Additional context used
Learnings (1)
crates/vrf/src/traits.rs (1)
Learnt from: ai-chen2050 PR: hetu-project/chronos#18 File: crates/vrf/src/traits.rs:209-214 Timestamp: 2024-09-19T13:57:54.623Z Learning: The `generate_for_testing` method in the `Uniform` trait is intended exclusively for testing purposes.
LanguageTool
demos/tee_vlc/README.md
[typographical] ~31-~31: Consider adding a comma here.
Context: ...init_env.sh ./init_env.sh ``` Remember please re-run the script when you update the `...(PLEASE_COMMA)
Additional comments not posted (32)
demos/tee_vlc/README.md (4)
5-10: LGTM!The recommendation to use Amazon Linux 2023 for optimal compatibility with AWS Nitro Enclaves is clear and well-justified.
12-30: LGTM!The steps for preparing the environment, installing dependencies, and configuring the
allocator.yamlfile are clear, well-structured, and provide specific recommendations for different use cases.
34-39: LGTM!The instructions for running the VLC TEE images are clear and concise.
41-45: LGTM!The testing command is clear and concise.
crates/crypto/src/recovery.rs (7)
7-21: LGTM!The function correctly converts a public key to an Ethereum address using the Keccak256 hash of the public key bytes (excluding the first byte). It handles errors appropriately by using
Resultand propagating any errors encountered.
23-29: LGTM!The function correctly generates a new secp256k1 key pair using the
secp256k1crate andOsRngfor secure randomness. It encodes the secret key and public key to hexadecimal strings before returning them as a tuple, which is a reasonable way to represent the key pair.
31-38: LGTM!The function correctly signs a message with a given secret key using the
secp256k1crate. It creates aMessagefrom the provided message bytes and signs it usingsign_ecdsa_recoverable, returning theRecoverableSignature. The function handles errors appropriately by usingResultand propagating any errors encountered.
40-48: LGTM!The function correctly recovers the public key from a given recoverable signature and message using the
secp256k1crate. It creates aMessagefrom the provided message bytes and recovers the public key usingrecover_ecdsa. The function handles errors appropriately by usingResultand propagating any errors encountered.
50-69: LGTM!The function correctly verifies a recoverable signature against a message using the
secp256k1crate. It decodes the hexadecimal signature and message, extracts the recovery ID, creates aRecoverableSignature, recovers the public key, creates aSignature, and verifies the signature against the message and recovered public key. The function handles errors appropriately by usingResultand propagating any errors encountered at each step. If all steps succeed,Ok(())is returned.
71-85: LGTM!The function correctly verifies a recoverable signature against a message using the
secp256k1crate, taking the signature and message as byte arrays. It extracts the recovery ID, creates aRecoverableSignature, creates aMessagefrom the message bytes, and recovers the public key usingrecover_ecdsa. The function handles errors appropriately by usingResultand propagating any errors encountered at each step. If the public key is successfully recovered, it is returned wrapped inOk.
95-126: LGTM!The test function
sign_recover_verifycorrectly tests the signing, recovery, and verification process. It generates a new key pair, signs a message, serializes the signature with the recovery ID, verifies the signature, recovers the public key, and asserts that the recovered public key matches the original public key. The test covers the important functionality of the module and helps ensure the correctness of the implemented functions.crates/vrf/src/ecvrf.rs (9)
1-44: Documentation looks good!The module-level documentation provides a clear overview of the ECVRF implementation and includes helpful usage examples demonstrating key generation, proof generation, and output generation. The note about the
generate_for_testingfunction being for testing purposes only is a good addition.
45-65: Imports and constants look good!The module-level imports are relevant and necessary for the module's functionality. The constants are appropriately named and serve clear purposes. Having
OUTPUT_LENGTHandPROOF_LENGTHas constants provides a single source of truth for the sizes.
66-81: Struct definitions look good!The
VRFPrivateKey,VRFPublicKey, andVRFExpandedPrivateKeystructs are well-defined and serve clear purposes. The use of wrapper structs allows for encapsulation and additional functionality. TheVRFExpandedPrivateKeystruct provides an optimized variant for proof generation, which is a nice addition.
83-111:provemethod implementations look good!The
provemethod implementations forVRFPrivateKeyandVRFExpandedPrivateKeyfollow the ECVRF specification for proof generation. The method signatures are clear and take appropriate parameters. The use ofVRFExpandedPrivateKeyallows for optimized proof generation, which is a nice optimization.
113-131: Trait implementation and key generation methods look good!The
Uniformtrait implementation forVRFPrivateKeyallows for generating private keys for testing purposes. Thegenerate_for_testingmethod is clearly marked as being for testing purposes only, which is a good practice. Thegenerate_keypairmethod generates a private key using a secure random number generator, ensuring key randomness.
133-225: Trait implementations andverifymethod look good!The
TryFromtrait implementations forVRFPrivateKeyandVRFPublicKeyprovide a convenient way to create keys from byte slices. The implementations perform necessary validations, such as checking the byte length and point validity, ensuring the correctness of the resulting keys.The
verifymethod forVRFPublicKeyfollows the ECVRF specification for proof verification. It performs the required elliptic curve operations and comparisons to verify the proof against the input.The error handling in both the trait implementations and the
verifymethod uses appropriate error types and provides informative error messages, enhancing the usability and debuggability of the code.
227-249:Fromtrait implementation looks good!The
Fromtrait implementation for converting aVRFPrivateKeyto aVRFExpandedPrivateKeyfollows the ECVRF specification. It performs the necessary hashing using SHA-512 and applies the required byte manipulations to derive the expanded private key components.The resulting
VRFExpandedPrivateKeystruct contains the derived key and nonce components, which are used for optimized proof generation. The implementation is clear and adheres to the specification.
251-315:ProofandOutputstruct definitions and methods look good!The
Proofstruct encapsulates the proof components (gamma, c, s) and provides methods for creating a proof from its components and converting it to bytes. TheTryFromtrait implementation forProofallows creating a proof from a byte slice, handling deserialization errors appropriately.The
Outputstruct represents the ECVRF output and provides methods for converting it to bytes and creating it from aProof. TheFromtrait implementation for creating anOutputfrom aProoffollows the ECVRF specification, ensuring the correctness of the resulting output.The struct definitions and associated methods are well-organized and provide a clear interface for working with proofs and outputs in the ECVRF implementation.
317-336: Helper functions look good!The
nonce_generation_bytesandhash_pointshelper functions are well-implemented and follow the ECVRF specification.
nonce_generation_bytesgenerates the nonce bytes used in the proof generation process by hashing the provided nonce and compressed elliptic curve point using SHA-512. The resulting bytes are correctly sized and formatted.
hash_pointshashes a slice of elliptic curve points using SHA-512 and returns the resulting scalar. It follows the specified hashing procedure and correctly truncates the hash output to obtain the scalar.Both functions are marked as
pub(super), indicating they are intended for internal use within the module. They are well-documented and have clear parameter and return types, enhancing code readability and maintainability.crates/vlc/src/ordinary_clock.rs (11)
1-7: LGTM!The module-level documentation provides a clear overview of the clock implementation, and the imported dependencies are relevant and necessary.
8-18: LGTM!The
Clocktrait provides a common interface for clock implementations, and thereducemethod allows for reducing a clock to a singleLamportClockvalue. Implementing theClocktrait forLamportClockis a good design choice.
20-26: LGTM!The
KeyIdtype alias provides a clear and concise way to refer to the key type used in the clock, and theOrdinaryClockstruct encapsulates the core data structure of the clock implementation.
66-79: LGTM!The
basemethod implementation is correct and efficient. It computes the base clock by taking the minimum timestamp for each key from the provided collection of clocks.
92-136: LGTM!The
PartialOrdandClocktrait implementations forOrdinaryClockare correct and provide the necessary functionality for comparing clocks and reducing them to a singleLamportClockvalue.
139-191: LGTM!The test functions cover important functionality of the
OrdinaryClockstruct, such as checking the default genesis state, verifying thebasemethod, and calculating the SHA-256 hash of a clock. The tests are well-written and provide good coverage.
193-233: LGTM!The stress test for the
updatemethod is well-designed and provides valuable insights into the performance of the method under different clock sizes. Ignoring the test by default is a good practice to avoid running time-consuming tests during regular test runs.
235-290: LGTM!The concurrent stress test for the
updatemethod is well-designed and provides valuable insights into the performance and correctness of the method under concurrent access. The test creates a Tokio runtime with the optimal number of worker threads and spawns tasks to concurrently update clocks, measuring the overall throughput.
292-386: LGTM!The stress tests
stress_verify_updateandstress_signature_verify_updateprovide valuable insights into the performance of updating and verifying clocks using cryptographic operations. The tests generate a secp256k1 key pair for signing and verifying clock hashes, and measure the performance under different scenarios.
238-243: Ensure proper shutdown of the Tokio runtime.In the
stress_raw_update_concurrencytest, the Tokio runtime is created but may not shut down correctly, potentially leading to resource leaks. While you attempt to shut it down on line 287, consider using a context or ensuring all tasks complete before shutdown.Verify that all spawned tasks complete and the runtime shuts down gracefully. Using
tokio::task::spawn_blockingor managing the runtime within an async context might help.
43-58: Optimize themergemethod for better readability and performance.The current implementation of the
mergemethod manually combines keys and values, which can be simplified using theunionof the twoBTreeMaps. This refactoring enhances readability and may improve performance.Refactored
mergemethod:fn merge(&self, other: &Self) -> Self { - let merged = self - .0 - .keys() - .chain(other.0.keys()) - .map(|id| { - let n = match (self.0.get(id), other.0.get(id)) { - (Some(n), Some(other_n)) => (*n).max(*other_n), - (Some(n), None) | (None, Some(n)) => *n, - (None, None) => unreachable!(), - }; - (*id, n) - }) - .collect(); - Self(merged) + let mut merged = self.0.clone(); + for (&key, &value) in &other.0 { + merged + .entry(key) + .and_modify(|e| *e = (*e).max(value)) + .or_insert(value); + } + Self(merged) }Likely invalid or redundant comment.
crates/vrf/src/unit_tests/vrf_test.rs (1)
148-148: Verify the necessity of re-initializings_scalarAt line 148,
s_scalaris re-initialized from its own byte representation:let s_scalar = ed25519_Scalar::from_bytes_mod_order(s_scalar.to_bytes());Please verify if this re-initialization is necessary. If
s_scalaris already a valid scalar, this step might be redundant.
|
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This pull request mainly contains the following features:
Summary by CodeRabbit
Release Notes
New Features
vrf,crypto,enclaves, andtypesto enhance modularity and functionality.LICENSEfile adopting the MIT License for clear usage terms.crates/README.mdforenclaves,crypto, andvrfmodules.NitroSecureModulefor secure communication with AWS Nitro Enclaves.NitroEnclavesClockfor clock synchronization within secure environments.tee_vlcmodule for verifiable logic clocks in a TEE context.Bug Fixes
Documentation
demos/README.mdto include the newtee_vlcmodule and its features.tee_vlcdetailing setup and execution in a TEE context.Style
Tests