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Data Theft Repackaged: A Case Study in Malicious Wrapper Packages on npm
The Socket Research Team breaks down a malicious wrapper package that uses obfuscation to harvest credentials and exfiltrate sensitive data.
eth-lib is a JavaScript library for Ethereum that provides a set of utilities for working with Ethereum data structures and cryptographic functions. It is designed to be lightweight and modular, making it easy to use in various Ethereum-related projects.
Hashing
This feature allows you to perform keccak256 hashing, which is commonly used in Ethereum for creating unique identifiers and securing data.
const ethLib = require('eth-lib');
const hash = ethLib.Hash.keccak256('hello world');
console.log(hash);
RLP Encoding/Decoding
This feature provides functions for encoding and decoding data using Recursive Length Prefix (RLP), a serialization method used in Ethereum.
const ethLib = require('eth-lib');
const encoded = ethLib.RLP.encode(['hello', 'world']);
const decoded = ethLib.RLP.decode(encoded);
console.log(encoded, decoded);
Signing
This feature allows you to sign messages with a private key, which is essential for creating transactions and verifying ownership in Ethereum.
const ethLib = require('eth-lib');
const privateKey = '0x...';
const message = 'hello world';
const signature = ethLib.Account.sign(message, privateKey);
console.log(signature);
Address Generation
This feature enables you to generate Ethereum addresses from private keys, which is fundamental for creating new accounts and managing identities.
const ethLib = require('eth-lib');
const privateKey = ethLib.Account.create().privateKey;
const address = ethLib.Account.fromPrivate(privateKey).address;
console.log(address);
web3 is a comprehensive library for interacting with the Ethereum blockchain. It provides a wide range of functionalities including contract interaction, account management, and utilities for working with Ethereum data structures. Compared to eth-lib, web3 is more feature-rich but also heavier and more complex.
ethers is a library for interacting with the Ethereum blockchain and its ecosystem. It is designed to be a complete and compact library for Ethereum, offering utilities for signing, hashing, and interacting with smart contracts. ethers is similar to eth-lib in terms of functionality but is more modern and actively maintained.
ethereumjs-util is a collection of utility functions for Ethereum. It provides low-level functions for hashing, signing, and encoding/decoding data. Compared to eth-lib, ethereumjs-util is more focused on providing low-level utilities and is often used as a building block for other libraries.
Lightweight Ethereum libraries. This is a temporary repository which will be used as the basis of an implementation on Idris (or similar).
FAQs
Lightweight Ethereum libraries
The npm package eth-lib receives a total of 311,805 weekly downloads. As such, eth-lib popularity was classified as popular.
We found that eth-lib demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 2 open source maintainers collaborating on the project.
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Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.
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