ethereum/alethArchived
Aleth
Aleth is an Ethereum C++ client and full-node implementation. It provides a virtual machine executor for running and debugging bytecode, a blockchain state debugger, and a serialization library for encoding and decoding data using the Recursive Length Prefix format.
The project includes a dedicated mining tool for producing blocks and benchmarking hashing hardware performance. It further distinguishes itself with a state debugger that analyzes pre- and post-execution state changes and generates step-by-step execution traces for the virtual machine.
The implementation covers node operations including peer discovery via bootnodes, snapshot-based state synchronization, and cryptographic key management for signing transactions. It also provides a framework for verifying consensus stability, simulating smart contract logic, and deploying contracts within private networks.
Features
- Ethereum Execution Clients - Provides a full C++ implementation of the Ethereum execution client for state transitions and block execution.
- EVM Implementations - Implements a high-performance Ethereum Virtual Machine for executing smart contract bytecode.
- Binary Serialization Formats - Provides a serialization library to encode and decode data using the Recursive Length Prefix format.
- Snapshot Synchronization - Accelerates node startup by downloading pre-computed state snapshots to bypass historical block replay.
- Hashing Accelerators - Provides optimized C++ routines to accelerate block production through hardware-efficient hashing operations.
- Blockchain Node Operation - Manages the overall operation of a blockchain node, including peer discovery and database recovery.
- Blockchain Network Interaction - Executes operations and manages data exchanges with the blockchain network using specialized tools.
- Bootstrap Node Discovery - Implements discovery protocols and bootnode connectivity to locate and connect with other network peers.
- Peer Discovery - Implements a discovery protocol and uses bootnodes to locate and connect with other network participants.
- Ethereum Virtual Machines - Implements the Ethereum Virtual Machine specification for executing and debugging smart contract bytecode.
- Blockchain Transaction Signing - Manages cryptographic keys and signs transactions to interact with the blockchain and manage assets.
- Blockchain Transaction Management - Handles the execution of transactions and the management of cryptographic keys for network communication.
- Data Encoders and Decoders - Transforms data structures to and from the recursive length prefix format for network communication.
- State Debuggers - Implements a debugger for inspecting real-time blockchain state and generating VM execution traces.
- Block Mining - Produces new blocks using hardware resources to secure the network and earn rewards.
- Serialization Libraries - Ships a library for encoding and decoding data using the Recursive Length Prefix format.
- State Transition Verification - Executes virtual machine bytecode to verify state transitions and perform general state tests.
- Ethereum Mining - Benchmarks hardware hashing speed and produces blocks to secure the Ethereum network.
- Account State Differencing - Calculates the specific changes between pre- and post-execution account states to track the impact of transactions.
- Smart Contract Execution Environments - Processes smart contract logic by simulating instructions within a dedicated virtual machine environment.
- VM Library Wrappers - Wraps the virtual machine as a shared library to allow external tools to execute bytecode and run tests.
- State Transition Inspections - Calculates the difference between pre- and post-execution states to identify modified accounts.
- Step Execution Tracing - Generates step-by-step execution traces and logs to analyze transaction processing in the VM.
- Blockchain Logic Testing - Runs automated test cases to verify state transitions and behavior across different network rules.
- Consensus Verification - Executes test scenarios to validate the correctness and consistency of network agreement logic.
- Hashing Performance Benchmarks - Measures hashing hardware efficiency and speed through configurable warmup and trial periods.
- Consensus Stability Testing - Simulates stressful scenarios to verify that the blockchain agreement process remains stable and correct.
- Automated Contract Testing Suites - Provides automated test suites to verify smart contract logic and stability before deployment.
- Ethereum Clients - C++-based Ethereum client implementation.
