Ethereum: signing safe transactions without using the sdk safeSDK.signTransaction(txs)

I can introduce you to the signs of non -melted transaction without using sdk (ethers.js) in dart.

Signature transaction without ethers.js SDK

At the work with the intelytectual counterattacks on the basis of Ethereum, it is necessary to sign the transaction to prevents unauthorized access and to make the intersection of the contract. In this state, we dissatisfied with the transaction without using ethers.js SDK.

Make a second underweight?

Ethers.js SDK imposes API for mutuality with the ethereum network, the transaction signature with the API JSON-RPC. However, the SDK can be used to introduce the marketlessness, if they will not be encompassed by a must. For example:

* Enviable signatures : ethers.js SDK generates cryptographic signatures on the basis of transaction. If these signatures are not verified, they can manipulate the vicinity.

* No management key : SDK uses pre -signed key for signature transaction. In the production medium you should use the renewed and the hand -being.

Uspolzing Ethers-Web3 B DART

For the sake of transaction without using ethers.js SDK, we use the “Ethere” package, which is a part of the Web3.js library,

`Dart

Import ‘Package: Ethers/Ethers.dart’;

// Create a new catch written ether (inappropriately)

Etdddress Address = etddress (‘0x …’);

// Distinguished data transaction

Map TXDATA = {

‘from’: Address.Tohex (), // ADRES EFRA

‘to’: ‘0x …’, // Advis Etira half

‘Value’: ‘0x …’, // values ​​of transaction in the Ephire

“Gas”: “1000000”, // Predel Gaza for transaction

‘Gasprice’: ’20 .00 ‘// Car on Gas (B Vay)

};

// Create a new copy of the Web3 Post (for example, infura, alchemy)

Web3 Web3 = Web3 (New Httpprovider (‘

// Signify the transaction

Etdddress signtxaddress;

ask {

Signtransaction ingtx = await web3.eth.signtransaction (txdata);

// ADVERATION OF THE STATULATION OF THE APPLIED ATTENDING CONTRACT, To use this signature tx

} Catch (error) {

PRINT (‘Sign On Transaction: $ {Error.tostring ()}’);

}

Signedtxaddress = signedtx.address;

// Put the signature transaction in code DART

Executygintransaction (signtxaddress, txdata, web3);

`

Important Classification

At the use of ethers' with dart, mymish in the view:

* Particular keys : Holly hoping your face keys and use a non -peculiar technique for the creation and management of them.

* Manage Key : Use a good sealing system of management by keys to guarantee that only authorized polls can be accessed to the signature transaction.

* Algorithms Signatures : PackageEthers` subtract the distinctive algorithms of the signature, such as ECDSA (Elliptic krychya ciphrosya signatures), which is more free, which RSA.

The follow -up of these stages and the dissatisfaction of the implementation of every entrance, you can unsettled the transaction without using Ethers.js SDK.

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