Blog
Metamask: How can I get private key from metamask when sending a transaction?
Here’s an article on how to get a private key from metamask, sending a deal using web3:
Private Keys from Metamaskas on Ethereum’s Transactions
When working with Ethereum smart contracts using the Web3 Library, you may want to sign deals using your private key. However, not all users can be easily accessible or available through the metamask purse. Metamaskas is useful here.
Sign the Deal Using Web3 and Your Private Key
When creating an account with metamask, you are delivered two main keys:
Ledger Keys (or paper purses) and
web3 keys (or metamk keys)
. To sign transactions using your private key from metamask, follow these steps:
Step 1: Get Your Web3 Key
If you have already set a web3 account with metamk, go to the metamk dashboard, where you can view the web3 keys. You should see the list of available keys in json format.
`Json
[
{
"Address": "0x ...",
"Privatekey": "...",
"Publickey": "...",
"Name": "Your Name"
},
...
]
“Key1”. Address (0x ...) and private key (...) is what you will use for signing transactions.
Step 2: Sign the Deal Using Web3
Use this code
`JavaScript
Const Web3 = Ask (‘Web3’). Default;
// replace “yourprivatekey” with your actual private key
Const privatekey = “0x …”;
Const tx = {{
From: ‘0x …’, // Agreement address you want to send a transaction.
to: ‘0x …’, // The recipient’s address.
Value: 100, // The amount of ether that will be sent in this translation.
Data: “Your Transaction Message.” // Description of what is intended.
};
Web3.eth.accounts.signtransaction (tx, privatekey, (error, signing) => {
If (Error) Console.error (Error);
Another {
Web3.eth.sensignedtransaction (signstx.ransaction) .then ((result) => {
Console.log (Result);
}). Catch ((Error) => {
Console.Error (Error);
});
}
});
`
Example of Use of Use:
Let’s say you try to send a deal from your metamask wallet. You have created an account with metamk dashboard and set the web3 key to this address.
`JavaScript
Const Web3 = Ask (‘Web3’). Default;
// replace “yourprivatekey” and “0x …” with your actual private key and contract address.
Const privatekey = “0x …”; // replace it with your actual private key.
Const contractDaddress = “0x …”; // Replace it with the smart contract address you want to send the transaction.
Web3.eth.accounts.signtransaction ({
From: ‘0x …’, // Agreement address you want to send a transaction.
to: contractdarress, // the recipient’s address.
Value: 100, // The amount of ether that will be sent in this translation.
Data: “Your Transaction Message.” // Description of what is intended.
}, Privatekey, (error, signstx) => {
If (Error) Console.error (Error);
Another {
Web3.eth.sensignedtransaction (signstx.ransaction) .then ((result) => {
Console.log (Result);
}). Catch ((Error) => {
Console.Error (Error);
});
}
});
`
In this examination, we The “Value”.
I Hope it Helps! Notify me if you have any questions or need further assistance.