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Using BLS12-381 curve operations on Ethereum: a guide for beginners
As an experienced developer and intelligent contract enthusiast, you are probably familiar with the importance of Efficient Cryptographic Operations in the Blockchain ecosystem. In this article, we will plunge into the use of BLS12-381 curve operations in Ethereum, focusing specifically on EIP-2537, and will explore how to implement them in public and private chains.
What is BLS12-381?
BLS (Hash Linear Linear) is a cryptographic hash function designed for efficient and safe data storage. It is based on the Blake2s algorithm and uses a 12 bytes output, making it suitable for various use cases, including smart contracts and decentralized applications (Dapps).
EIP-2537: BLS12-381 curve operations
In 2018, Ethereum launched the EIP-2337, which introduced a new set of cryptographic primitives to improve network safety and efficiency. One of these primitives is BLS12-381 curve operations, which allow faster and safer data transmission.
Using EIP-2537 in Public Chains
In a public jail, you can use the Ethereum package to activate BLS12-381 curve operations. Here is an example:
`JavaScript
Consta {Ethereum} = Requires (‘Ethereumjs’);
Consta Bls12_381 = New Ethereum.BLS12_381 ();
// Define the input data
CONST Data = ‘Hello, world!’;
// Run an operation BLS12-381
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 will need to use a different approach. In this case, we will focus on using the Web3 package with Web3.js to activate BLS12-381 curve operations. Here is an example:
`JavaScript
CONST Web3 = Requires (‘Web3’);
CONST PROVIDER = new web3.providers.httpprovider (‘ // Replace with your project ID infures
// Define the input data (replace with your own)
CONST Data = ‘Hello, world!’;
// Run an operation BLS12-381
Web3.eth.accounts.signtransaction ({from: ‘0xyouraccountadress’, data}, {
Key: Web3.eth.accounts.KeyfromfombuFFER (Web3.utils.FromHex (‘Your_Private_Key’)) // Replace with your private key,
})
.
Provider.SendTransaction (SignedTransaction.Rawttransaction), (error, result) => {
if (error) {
console.error (error);
} other {
console.log (Result: $ {result});
}
});
});
`
Implementation in EIP-2537
Here is a simple implementation of BLS12-381 curve operations on EIP-2537 using the Web3 package:
`JavaScript
CONST Web3 = Requires (‘Web3’);
CONST PROVIDER = new web3.providers.httpprovider (‘
// Define the input data
CONST Data = ‘Hello, world!’;
// Define the BLS12-381 curve operating parameters
Const Curveparams = {
Type: ‘Bls12_381’,
Key: Web3.eth.accounts.KeyfromfombuFFER (Web3.utils.fromhex (‘Your_Private_Key’)), // Replace with your private key,
};
// Run an operation BLS12-381
Web3.eth.accounts.signtransaction ({from: ‘0xyouraccountadress’, data, curveparams}, {
provider,
})
.
Provider.SendTransaction (SignedTransaction.Rawttransaction), (error, result) => {
if (error) {
console.error (error);
} other {
console.log (Result: $ {result});
}
});
});
`
Conclusion
In this article, we exploit the use of BLS12-381 curve operations in Ethereum, specifically with EIP-2337. We cover examples of public and private chain, demonstrating how to implement these primitives using popular packages such as ‘web3andEthereumjs’. With this knowledge, you can create more efficient and safe intelligent contracts and decentralized applications.
