Ethereum: Back with an error GS026 for “Isvalidsignature” the call function
Entry
In this article, we will study the “Isvalidsignature” function in Ethereum, which is used to verify the authenticity and integrity of signed messages. We will also show how to use it to sign a message using the EOA portfolio (owner of easy access).
What is “Isvalidsignature”?
The “Isvalidsignature” function takes two parameters:
Messagehash: Hash of the signed message.
SIGNATURE: Digital signature signature, generated by signing a message with their private key.
Sample code
Here is an example fragment of the code that shows how to use “Isvalidsignature” to sign a message using the EOA portfolio:
`Javascript
Import {Ethers} with "Ethers";
// configure the wallet and supplier
const private = "0x1234567890abdef";
Const provider = new ethers.providers.jsonrpcprovider ("
// Create a new wallet instance
Const Wallet = New Ethers.wallet (privatey, supplier);
// Define a message to sign
Const Message = "Hello";
// Get the gas limit to sign (in ETH)
Const Gaslimit = 20,000; // You can adapt this value according to your needs
// Calling the ISVALIDSIGNATURE function with a shortcut and signature
ISNC ISVALIDSIGNURE (Messagehash, signature) function {
to try {
Const txreceipt = expect a wallet.
return True;
} catch (error) {
console.error (error);
return false;
}
}
// sign a new message using the EOA portfolio
Const shistedMessage = expect Isvalidsignature (Messagehash, "0x1234567890abdef"); // replace your own private key
if (! SonnedMessage) {
console.log ("error: unable to sign the message.");
} otherwise {
console.log ('signature is correct. Message hash: $ {messagehash});
}
`
GS026 Error service
When using the “Isvalidsignature” function, you may encounter the GS026 error if the delivered signature does not match the expected or if there are any problems with the private wallets key.
Here is an example fragment of the code that shows how to deal with this error:
`Javascript
Import {Ethers} with "Ethers";
// configure the wallet and supplier
const private = "0x1234567890abdef";
Const provider = new ethers.providers.jsonrpcprovider ("
// Create a new wallet instance
Const Wallet = New Ethers.wallet (privatey, supplier);
// Define a message to sign
Const Message = "Hello";
// Get the gas limit to sign (in ETH)
Const Gaslimit = 20,000; // You can adapt this value according to your needs
to try {
ISNC ISVALIDSIGNURE (Messagehash, signature) function {
to try {
Const txreceipt = expect a wallet.
return True;
} catch (error) {
if (error.code === "gs026") {
console.error ("There was an error: GS026 there was a mistake. Check the private key.");
return false;
} otherwise {
Throwing error;
}
}
}
// Calling the ISVALIDSIGNATURE function with a shortcut and signature
Const shistedMessage = expect Isvalidsignature (Messagehash, "0x1234567890abdef");
if (! SonnedMessage) {
console.log ("error: unable to sign the message.");
} otherwise {
console.log ('signature is correct. Message hash: $ {messagehash});
}
} catch (error) {
console.error (error);
}
`
the best practices
When using the “Isvalidsignature” function, remember about the following best practices:
- Always verify the gas limit so that the signing operation has enough gas available.
- Use a secure private key and the portfolio instance.
