Working with errors and signature management in Ethereum intelligent contracts
As a developer building intelligent contracts based on Ethereum, you are probably familiar with the importance of correct mistakes and signature management. In this article, we will immerse ourselves in the problem under consideration – “Binance Signature” is not valid.
The problem: Binance signature
When creating a digital signature for Ethereum blockchain transaction, you must make sure that the used Privatekey '(or address') is correct and coincides with the one provided by API binance. However, for the reasons for the security, theBinanceAPI does not provide direct access to the private key to the signator.
Code:Cryptomodule
To solve this problem, we will use theCryptomodule in node.js to generate a digital signature for the transaction and then check it using API on Binance. Here is an example fragment of code:
javascript
const crypto = requires (‘crypto’);
const {signer} = crypto;
// Replace with your own private key
Const Privatekey = “your_private_Key_Here”;
// Define the feature to be used to sign transactions
ASYNC Functional Signature (Message) {
try {
// Create a new copy of signatures using Binance API
CONST SIGNER = Wait a new signature (Privatekey);
// Sign the transaction with the signature
CONST Signature = waiting signature.signmessage (message, “eth_sign”);
Return of signature;
} catch (error) {
Console.error (“signing transaction error:”, error);
Throwing error; // Re-throw the error for further control
}
}
// Sample use:
Async function main () {
try {
// Send a message to Ethereum network
CONST MESSAGE = “Hello, Binance!”;
CONST Signature = Wait Signature (Message);
Console.log (“signature of transaction:”, signature);
} catch (error) {
Console.error (“Error:”, error);
}
}
main ();
`
Explanation:
- First we import the
Cryptomodule and define a new copy of the” Signer “class using API of Binance.
- In
Signaturefunctionwe create a new copy of the signator with your personal key as an argument.
- We then call the signmessage method to the signature by handing over the message to be signed and the signature algorithm (“ETH_SIGN”).
- If you succeed, we return the generated digital signature.
Tips for successful execution:
* Save your personal key : Never share or expose your personal key publicly.
* Use a reliable Binance API conversion : Make sure you use an established library that processes API keys securely and correctly.
* Test thoroughly : Check that your “Crypto” module works as expected, including generating signatures for different messages.
Following these steps and tips, you should be able to resolve the “Binance Signature”, which is not a valid mistake in the construction of intelligent contracts based on Ethereum.