Restoring Ethereum Hash Transaction without Private Key
As developers who work with Ethereum, you may need to set the hash of the transaction of the withdrawal or transaction without access to the private key. One approach is to use RSV values related to the transaction (random supply value).
In this article, we examine how to obtain the hash of the message from the Ethereum transaction using RSV values and then discuss alternative methods.
Understand the transaction of Ethereum hash
The Ethereum transaction hashja is a unique 64 -chacters that serves as a fingerprint. You need to know at least one of the following to reclaim the transaction without a private key:
- Transaction ID: You can search this transaction in Blockchain Ethereum Explorer.
- Transaction hash (without a private key): This is a 64 -character chain that represents the transaction itself. RSV values will be used for recovery.
Restore the hash -transction with RSV values
Ethereum blockchain uses a combination of RSV values and hash to represent the contents of each block. A standard block has:
* r (random supply value): a random value between 0 and 1 used for the next benefit.
* S (supply value): the current supply value.
* v (value)
: a decimal value representing the amount of the transaction.
To restore the transaction hash, use RSV values without using the private key. Here’s a step by step:
- Get the contents of the block:
* Use Ethereum Customer as Ethers.js or Web3.py to read block data.
- Remove the transaction and RSV identification values:
* Identify your transaction ID from Blockchain Explorer or find the network transaction.
* Get the RSV (R, S, V) values of the specified transaction.
3
* Use hash algorithm such as SHA-256 to combine RSV values and transaction data.
Here are some sample codes in JavaScript using web3.js:
`Javascript
Const web3 = needed ('web3');
Const -eter = needed ('ether');
// Configure Ethereum supplier (such as Infura, Alchemy)
Const the service provider = new web3.providers.httpprovider ('
Function asyc ghettransectionash (transaction) {
Const block = Alea service provider.getblock (your transactions);
constacciondata = block.hash;
// Get RSV values for the specified transaction
Const rsvvalues = block.transactions [0] .rsv;
Const s = block.transections [0] .s;
Const v = block.transections [0] .v;
// Calculate the hash of the transaction without a private key
Const txhash = eThers.utils.solityfaaddress (
Web3.utils.tohex (rsvvalues) +
Web3.utils.tohex (s) +
Web3.utils.Tohex (V)
);
Return Txhash;
}
// Get the transaction hash for a particular transaction ID
Gettransectionah ('transionid'). Then ((txhash) => {{{
Console.log (txhash);
});
`
Alternative methods
Although the use of RSV values is an approach, there are other methods to regain transaction hash without a private key:
- Check Blockchain Explorer: Find the transaction in a blockchain Ethhereum Explorer such as Esterscan or Blockscat to obtain transaction and RSV identification values.
- Use a directory: Use libraries such as “Ethers.js” (as in the figure above) that provide API for interaction with the Ethereum network without private key.
Note that these alternative methods may have a different level of security, accuracy or availability compared to the use of the private key.
By understanding how to regain the Ethereum transaction hash without a private key, you can now move forward in Ethereum development projects.