Merge pull request #14 from getsafle/sign-message

Sign message

CHANGELOG.md

@@ -4,3 +4,4 @@
 
 - Implemented Keyring functionality to manage accounts
 - Implemented functionality to sign a raw transaction
+- Implemented functionality to sign a message

src/index.js

@@ -400,6 +400,28 @@ class KeyringController extends EventEmitter {
     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
    *