Ethereum: Format problem when signing and verifying messages using Safe Wallet

Ethereum: Format problem by signing and verifying messages using a safe wallet

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When working with Ethereum wallets, as a safe wallet, it is essential to ensure that their wallet operations are handled correctly. A common problem that may arise is when signing and verifying messages using the isignaturevalidator class in its solidity contracts. In this article, we will explore what causes the GS026 error and provide a solution.

The GS026 error

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GS026 (gas overflow) occurs when the function ‘eth_signis called with a message that exceeds the maximum allowed gas limit. This can happen if you are using an obsolete wallet or incorrectly handle the variable 'Signaturebuffer'.

Causes of error GS026:

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• Incorrect signature buffer assignment : Be sure to assign enough space for the 'signaturebuffer when calling’ eth_sign.

• Insufficient gas limit : Verify that your wallet has enough gas limits to handle the signature process.

• Incorrect length of the message : Make sure your message is not too long, since it can exceed the maximum allowed gas limit.

Solution: GS026 error management

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To solve the GS026 error when used isignaturevalidator.isvalidsignature, you can follow these steps:

• Verify the allocation of the signature buffer

  

  : Check ifsignaturebufferhas enough space assigned for the firm. You can do this verifying its length and assigning more space if necessary:

SOLIDITY

const firaturebuffer = new uint8array (2 * message.length); // assign enough space

• Verify the gas limit

  : Make sure your wallet have enough gas limits to handle the signature process. You can verify the current gas limit by calling 'ethgaslimit in the Ethereum block chain:

`SOLIDITY

const cicentgaslimit = Aleath ethgaslimit ();

if (currentgaslimit

// reduce the gas limit if necessary

}

• Verify the length of the message : Make sure your message is not too long, since it can exceed the maximum allowed gas limit. You can verify the length of the message and reduce it if necessary:

SOLIDITY

const maxlength = maximum gas / 8 gas; // Assume an 8 -bytes block size per gas unit

if (message.length> maxlength) {

// Reduce the length of the message if necessary

}

Example code

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Here is an example solidity contract that demonstrates how to handle the GS026 error:

` SOLIDITY

Pragma solidity ^0.8.0;

import “

Import “

Hire Safecontract {

// initialize the wallet and establish the gas limit

Builder () public {

_Setgaslimit (2 ** 32); // Establish a sufficient gas limit

// Assign sufficient space for signature buffer

const firaturebuffer = new uint8array (2 * message.length);

}

Function _SignMessage (Message: Bytes) Internal Return (Bytes Memory) {

// Verify if the gas limit is sufficient to handle the firm

affirm (_gaslimit> = ethgaslimit (), “insufficient gas limit”);

// Verify the signature buffer allocation

if (firaturebuffer.length! = 2 * message.length) {

requires (0, “invalid signature buffer”);

}

// Reduce the length of the message if necessary

if (Message.length> Max gas limit / 8) {

_Reducessaglelength (message);

}

// Sign the message using the Openzeppelin token erc721 contract

bytes memory signature = SafeToken.safeTokenAddress().signingFunction Sig(

msg.sender,

address (this).

Block Reward Defi