Ethereum: How to sign a transaction hash in ruby?
signing Ethereum transactions in Ruby: A step -by -step guide
Ethereum is a decentralized popular platform that allows developers to build and implement smart contracts and applications. One of the key components of any Ethereum transaction is “hash transaction “, which contains the input data, including the sender’s private key and the unsigned transaction. In this article, we will explore how to sign an Ethereum transaction using SECP256K1 in Ruby.
understanding SECP256K1
Before we dive in the code, we will briefly discuss the SECP256K1, a cryptographic algorithm used to sign the digital signatures in Ethereum transactions. SECP256K1 is a safe and efficient elliptical cryptography algorithm, which allows developers to sign messages with their own private key. The Библиотека SECP256K1 'в Ruby предлагает реализацию этого алгоритма.
Подписание хэша транзакции
Чтобы подписать транзакцию Ethereum, необходимо вычислить хэш транзакции в исходных данных (закрытый ключ и неподписанная транзакция). Ниже приведено пошаговое руководство, как это сделать:
1. Вычислите хэш транзакции
Прежде всего, создайте новый объект "транзакция" с вашим приватным ключом в качестве отправителя. Мы будем использоватьSECP256K1библиотека для вычисления хэша транзакции.
Руби
Запрос "SECP256K1"
Определите закрытый ключ в шестнадцатеричном формате (например, 0x1234567890ABCDEF).
Private_Key = "0x1234567890ABCDEF"
Создайте новый объект транзакции с вашим закрытым ключом в качестве отправителя
transaction_hash = transaction.new (private_key)
2. Signs the hash of the transaction
Now that we have the hash of the transaction, let's sign it using SECP256K1.
Руби
Signing_key = opennsl :: rsa: pkcs8 :: Privatenumber.from_pem ("----- starts private key ----- n ... Your private key here ... \ n ----- End RSRS Private Key ----- ")
Sign the hash of the transaction with your signing key (make sure you replace your "signing key" with your real private key)
signed_transction_hash = transaction_hash.sign (signing_key, 'sha256')
####. Get the transaction hash hash
Finally, we will convert the hash of the transaction signed into a hexadecimal string.
Руби
Convert the transaction hash signed into a hexadecimal string
signed_transction_hash_hex = signed_transction_hash.to_s (16)
Code testing
Here is the complete code fragment:
Руби
Запрос "SECP256K1"
requires "opennsl"
Определите закрытый ключ в шестнадцатеричном формате (например, 0x1234567890ABCDEF).
Private_Key = "0x1234567890ABCDEF"
Создайте новый объект транзакции с вашим закрытым ключом в качестве отправителя
transaction_hash = transaction.new (private_key)
Sign the hash of the transaction with your signing key (make sure you replace your "signing key" with your real private key)
Signing_key = opennsl :: rsa: pkcs8 :: Privatenumber.from_pem ("----- starts private key ----- n ... Your private key here ... \ n ----- End RSRS Private Key ----- ")
signed_transction_hash = transaction_hash.sign (signing_key, 'sha256')
Convert the transaction hash signed into a hexadecimal string
signed_transction_hash_hex = signed_transction_hash.to_s (16)
Put "hash the signed transaction: #{simned_transacti_hash_hex}"
This code should issue the transaction hash signed in hexadecimal format. Note that you will need to replace your "private key" with your real private key and install the SECP256K1 library, adding it to gemfile and runningBundle Install`.