03 Feb Ethereum: How can I use curve operations BLS12-381: EIP-2537, whether on a public or private chain
Using BLS12-381 Curve Operations in Ethereum: A Beginner’s Guide
As an experienced developer and smart contract enthusiast, you’re likely familiar with the importance of efficient cryptographic operations in the blockchain ecosystem. In this article, we’ll dive into using BLS12-381 curve operations in Ethereum, specifically focusing on EIP-2537, and explore how to implement them in both public and private chains.
What is BLS12-381?
BLS (Brief Linear Cryptographic Hash) is a cryptographic hash function designed for efficient and secure data storage. It’s based on the Blake2s algorithm and uses a 12-byte output, making it suitable for various use cases, including smart contracts and decentralized applications (dApps).
EIP-2537: BLS12-381 Curve Operations
In 2018, Ethereum released EIP-2537, which introduced a new set of cryptographic primitives to improve the security and efficiency of the network. One of these primitives is BLS12-381 curve operations, which allow for faster and more secure data transmission.
Using EIP-2537 in Public Chains
In a public chain, you can use the ethereum package to enable BLS12-381 curve operations. Here’s an example:
const { Ethereum } = require('ethereumjs');
const bls12_381 = new Ethereum.BLS12_381();
// Define the input data
const data = 'Hello, World!';
// Perform a BLS12-381 operation
const result = bls12_381.sign(data);
// Print the output
console.log(Result: ${result});
Using EIP-2537 in Private Chains
In a private chain or a testnet, you’ll need to use a different approach. In this case, we’ll focus on using the web3 package with Web3.js to enable BLS12-381 curve operations. Here’s an example:
const web3 = require('web3');
const provider = new web3.providers.HttpProvider(' // Replace with your Infura project ID
// Define the input data (replace with your own)
const data = 'Hello, World!';
// Perform a BLS12-381 operation
web3.eth.accounts.signTransaction({ from: '0xYourAccountAddress', data }, {
key: web3.eth.accounts.keyFromBuffer(web3.utils.fromHex('YOUR_PRIVATE_KEY')) // Replace with your private key,
})
.then((signedTransaction) => {
provider.sendTransaction(signedTransaction.rawTransaction), (error, result) => {
if (error) {
console.error(error);
} else {
console.log(Result: ${result});
}
});
});
Implementation in EIP-2537
Here’s a simple implementation of BLS12-381 curve operations in EIP-2537 using the web3 package:
const web3 = require('web3');
const provider = new web3.providers.HttpProvider('
// Define the input data
const data = 'Hello, World!';
// Define the BLS12-381 curve operation parameters
const curveParams = {
type: 'Bls12_381',
key: web3.eth.accounts.keyFromBuffer(web3.utils.fromHex('YOUR_PRIVATE_KEY')), // Replace with your private key,
};
// Perform a BLS12-381 operation
web3.eth.accounts.signTransaction({ from: '0xYourAccountAddress', data, curveParams }, {
provider,
})
.then((signedTransaction) => {
provider.sendTransaction(signedTransaction.rawTransaction), (error, result) => {
if (error) {
console.error(error);
} else {
console.log(Result: ${result});
}
});
});
Conclusion
In this article, we explored the use of BLS12-381 curve operations in Ethereum, specifically with EIP-2537. We covered both public and private chain examples, demonstrating how to implement these primitives using popular packages like web3 and ethereumjs. With this knowledge, you’ll be able to create more efficient and secure smart contracts and decentralized applications.
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