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

Ethereum: problem of format when signing and checking the messages using the safe wallet

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When working with Ethereum wallets, like the safe wallet, it is essential to ensure that the wallet operations are managed correctly. A common problem that can arise is when signing and the messages occur using the isignatervalidator class in solidity contracts. In this article, we will explore what causes the GS026 error and provide a solution.

The GS026 error

——

GS026 (Gas Overflow) occurs when the Eth_Sign 'function is called with a message that exceeds the maximum gas limit. This can happen if an obsolete portfolio is used or erroneously managed the variablesignaturebuffer ‘.

Causes of the Error GS026:

———

• Allocation of the incorrect signature buffer

  : make sure to allocate enough space for the signaturebuffer 'when it is called Eth_Sign.

• insufficient gas limit : verify that the wallet has sufficient gas limits to manage the signature process.

• Length of the wrong message

  : Make sure the message is not too long, as it can exceed the maximum gas limit.

Solution: management of GS026 Error

———-

To resolve the GS026 error when using Isignavalidarer.isvalidsignatures, you can follow these steps:

• Check the allocation of the buffer : check if `signaturebuffer has enough space allocated for the signature. You can do it by checking its length and allocating more space if necessary:

Solidity `

Const SignatureBuffer = New Uint8array (2 * Message.length); // assigns sufficient space

`

• Check the gas limit : make sure that the wallet has sufficient gas limits to manage the signature process. You can check the current gas limit by callingEthgasLimit ‘on the blockchain Ethereum:

Solidity `

Const CurrentgasLimit = Active EthgasLimit ();

IF (CurrentgasLimit

// Reduce the gas limit if necessary

}

`

• Check the length of the message : make sure the message is not too long, as it can exceed the maximum gas limit. You can check the length of the message and reduce it if necessary:

Solidity

Const Maxlength = Max Gas Limit / 8; // Take a size of the 8 byte block for gas unit

If (Message.Length> Maxlength) {

// Reduce the length of the message if necessary

}

`

Example code

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Here is a solidity contract that shows how to manage the GS026 error:

Solidity

Pragma solidity ^0.8.0;

Import « 

import « 

SAFECONTRACT {contract

// Initialize the wallet and set the gas limit

CONSTRUTOR () public {

_setgaslimit (2 ** 32); // Sets a sufficient gas limit

// assigns sufficient space for the signature buffer

Const SignatureBuffer = New Uint8array (2 * Message.length);

}

Function _SignMessage (Message: Byte) internal rendered (byte memory) {

// Check if the gas limit is sufficient to manage the signature

assert (_gaslimit> = ethgaslimit (), « insufficient gas limit »);

// Check the allocation of the signature buffer

If (signaturebuffer.length! = 2 * Message.length) {

Request (0, « non -valid signature buffer »);

}

// Reduce the length of the message if necessary

If (Message.Length> Max Gas Limit / 8) {

_DuCECEMESSEGELEGH (Message);

}

// Sign the message using the Taken ERC721 contract by OponenzepPelin

Bytes Memory Signature = Safetken.safetkenaddress (). Signningfunction Mr.

msg.sender,

address (this).

Ethereum Estimation When Smart Contract