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Eth Crypto

Eth Crypto is an MIT-licensed JavaScript library that provides cryptographic functions and tutorials for Ethereum identities, transactions, signatures, encryption and Solidity/Web3 development.

Explore the practical guide ↓

Independent OpenViST project profile, based on linked sources.

Eth Crypto — OpenViST project profile in Developer Tools.
OpenViST project illustration. See the linked sources for product details.
Understand the project

Practical overview

When it fits

Use Eth Crypto when an Ethereum dApp or service needs JavaScript cryptographic operations and the implementation also involves web3.js, Solidity or Ethereum transaction workflows.

Who it is for

  • JavaScript developers building Ethereum applications
  • Developers connecting browser or server code with web3.js
  • Solidity developers who need JavaScript signing and on-chain signature validation
  • Teams implementing encrypted and signed messages between Ethereum identities

Documented uses

  • Create Ethereum identities with private keys, public keys and addresses
  • Derive addresses and public keys from key material
  • Sign data and recover the signer’s address or public key
  • Encrypt messages for an Ethereum identity and decrypt them with the corresponding private key
  • Prepare transaction and contract-related cryptographic data
Before you choose

Requirements & limits

The repository is public and identifies an MIT license. The documented setup uses npm, with ES6 and Node.js import examples.

  • Its documented scope spans both standalone cryptographic functions and tutorials connecting JavaScript with web3.js and Solidity.
  • The API includes identity creation, key derivation, signing, recovery, encryption, decryption and transaction-related helpers.
  • The project warns that supplied entropy must be handled carefully because poor entropy can result in an insecure private key.
  • The supplied documentation does not specify the complete API surface, runtime-version support or production-readiness.

Check current requirements in the official documentation. Source-based guidance does not mean OpenViST has run or independently tested this project.

Source-based practical guide

Install Eth Crypto for JavaScript development

Set up the documented library import path for an Ethereum JavaScript project.

Before you start

  • A JavaScript project using npm.
  • A Web or Node.js environment matching the project's documented import examples.

Steps

  1. Install the package with npm using the repository's documented package command.

  2. Import EthCrypto with ES6 syntax in an ES6 project or require it in Node.js.

  3. Use the documented API areas for identities, keys, signing, encryption or transaction utilities.

Expected outcome

Eth Crypto is added to the project and available through the documented JavaScript import styles.

Guide limitations

  • The documentation does not specify complete runtime-version support or guarantee compatibility with a particular project setup.
  • Installation alone does not configure web3.js, Solidity contracts or an Ethereum network.
Documentation 1 ↗
Evidence and transparency

Sources & review

Official repository ↗
Source record details
Source availability
Active
Sources checked
2 October 2026
Original website title
pubkey/eth-crypto · Official homepage title · retained in its source language
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