openzeppelin-contracts

by OpenZeppelin

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Updated 19 days ago

About

OpenZeppelin Contracts is a widely-used, community-vetted library providing secure, reusable smart contract components for blockchain development.

OpenZeppelin Contracts is a library for secure smart contract development.

Primary Use Case

This tool is primarily used by blockchain developers to build secure and standardized smart contracts, including tokens and access control mechanisms. It simplifies the development process by offering audited implementations of popular standards like ERC20 and ERC721, enabling developers to focus on their application logic while ensuring security best practices.

Key Features

Implementations of widely adopted token standards such as ERC20 and ERC721
Flexible role-based permissioning and access control system
Reusable Solidity components for building custom and complex decentralized applications
Semantic versioning with clear guidelines for upgradeable contracts and storage layout compatibility
Integration with popular development environments like Hardhat and Foundry
Interactive smart contract generator via Contracts Wizard
Extensive documentation and community support

Installation

Install via npm for Hardhat: npm install @openzeppelin/contracts
Install via git for Foundry: forge install OpenZeppelin/openzeppelin-contracts
Add remapping in remappings.txt: @openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/
Avoid using the master branch directly; prefer tagged releases for stability and security

Usage

>_ npm install @openzeppelin/contracts

Installs the OpenZeppelin Contracts library via npm for Hardhat projects.

>_ forge install OpenZeppelin/openzeppelin-contracts

Installs the OpenZeppelin Contracts library via Foundry using git.

>_ import {ERC721} from "@openzeppelin/contracts/token/ERC721/ERC721.sol";

Imports the ERC721 contract to be used in a Solidity smart contract.

>_ contract MyCollectible is ERC721 { constructor() ERC721("MyCollectible", "MCO") {} }

Example of creating a custom ERC721 token contract by inheriting from OpenZeppelin's ERC721 implementation.

Security Frameworks

Initial Access

Defense Evasion

Credential Access

Privilege Escalation

Impact

Usage Insights

Integrate OpenZeppelin Contracts into CI/CD pipelines to automate security best practices for smart contract deployments.
Leverage the role-based access control features to enforce least privilege in decentralized applications.
Combine with blockchain security monitoring tools to detect anomalous contract interactions in real-time.
Use the Contracts Wizard to accelerate secure smart contract prototyping and reduce human error.
In purple team exercises, simulate attacks exploiting smart contract vulnerabilities to validate defenses built using OpenZeppelin.

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Security Profile

Red Team30%

Blue Team90%

Purple Team70%

Details

LicenseMIT License

LanguageSolidity

Open Issues2073

Topics

ethereum

solidity