Merge pull request #14 from getsafle/feature-sign-transaction

Feature sign transaction

CHANGELOG.md

@@ -6,5 +6,7 @@
 - Implemented functions to add account, export accounts & import accounts
 - Implemented functionality to sign a message
 - Implemented functionality to get coin balance for a wallet
+- Implemented functionality to sign a raw transaction
+
 
 

src/index.js

@@ -386,6 +386,37 @@ class KeyringController extends EventEmitter {
     }
 
 
+    async signTransaction(rawTx, privateKey) {
+        const pkey = Buffer.from(privateKey, 'hex');
+
+        const tx = FeeMarketEIP1559Transaction.fromTxData(rawTx);
+
+        const signedTransaction = tx.sign(pkey);
+
+        const signedTx = bufferToHex(signedTransaction.serialize());
+
+        return signedTx
+    }
+
+     /**
+    * Sign Transaction or Message to get v,r,s
+    *
+    * Signs a transaction object.
+    *
+    * @param {Object} rawTx - The transaction or message to sign.
+    * @param {Object} privateKey - The private key of the account.
+    * @param {Object} web3 - web3 object.
+    * @returns {Object} The signed transaction object.
+    */
+     async sign(rawTx, privateKey, web3) {
+        let signedTx;
+        if (typeof rawTx === 'string')
+            signedTx = await web3.eth.accounts.sign(rawTx, privateKey);
+        else
+            signedTx = await web3.eth.accounts.signTransaction({ ...rawTx, gas: await web3.eth.estimateGas(rawTx) }, privateKey)
+        return signedTx
+    }
+
     /**
      * Get Keyring For Account
      *