Ethereum: How to extract addresses from input in raw transaction

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Entry addresses from RAW Ethereum Transaction

Ethereum deals are complicated and include multiple inputs, including « vin(input check). In this article, we will translate you through the process of extracting these addresses from a raw transaction in offline mode.



 View the components of raw transactions 

Ethereum's raw transaction consists of several components:


 TXN ID : Unique transaction identifier.



 from 

: the sender's "address" (for example, "0x ...").



 to : The "address" of the recipient.

** Value: The value sent to the transaction.

Gaza restriction : The gas limit used to carry out the transaction.

Entry addresses

In order to extract input addresses from a raw transaction, we must identify the component vin, which is responsible for creating these addresses. The vin component is usually created by the sender’s private key and includes:

** Address’: Sender address (hexadecimal string).

** Sum: The value sent to the transaction.

** Publicyhash: The public part of the sender's address.



Here's an example of a raw transaction:

'raw



TXN ID: 0x1234567890abcdef

From: 0x ... (sender address)

to: 0x ...

Value: 10 ether

Gaza Restriction: 20000

Entry addresses

In order to retrieve entry addresses, we must analyze the raw transaction and identify the component vin.

In the typical implementation of Ethereum, the component vin is stored in the ‘tx.vin’ field of the raw transaction. To access this field, we can use the eth.utils.tobuffer () 'feature from the euters.js library:

javascript

CONST TX = // Raw Transaction’s Patient

// Get the VIN field as a buffer

const vinbuffer = tx.vin;

// Create an array to store entry addresses

const inputaddresses = [];

// Repeat over VIN records and retrieve the address

for (let i = 0; I <vinbuffer.length; i ++) {

const entry = vinbuffer [i];

if (Entry.index === 0) {// Write the sender

const privatekey = eth.utils.tohex (entry.privatekey);

inputaddresses.push (Privatekey); // Add the sender’s address to the array

}

Extract offline address

For offline mode, we need to retrieve the addresses without requiring a connection to the Ethereum network. One of the approach is to use a library such as Ether.js, which provides a function ‘andto' to convert between Ethereum accounts and addresses.



Here's an example of how to retrieve input addresses from a raw transaction using euters.js:

javascript

Const {eth} = requirement (‘euters’);

// Create a copy of the Ethereum contract

CONST contract = new ETH.CONTRACT (« Contractaddress », « 0x … »); // Replace with your contract address

// Load the raw transactions data (eg from a file or database)

CONST TXDATA = // Load the raw transaction data here

// Convert the TX.VIN field into an array of entry addresses

Const inputaddresses = Wait a contract.from (TXDATA) .get (« from »). Then ((address) => {{{

Return Address.Address;

});

console.log (inputaddresses); // Output: Massive ([0x …])

Conclusion

In this article, we demonstrated how to extract entry addresses from raw transactions on Ethereum using offline mode. By analyzing transaction data and identifying the component vin, we can then extract the sender’s addresses as hexadecimal strings.

Note that this is a simplified example and in real -world scenarios you may need to deal with errors, extreme cases and additional requirements (such as maintenance for many types of inputs).

Ethereum: How to extract addresses from input in raw transaction

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