diff --git a/config.js.example b/config.js.example
index 834b1d0..cb9239c 100644
--- a/config.js.example
+++ b/config.js.example
@@ -39,8 +39,13 @@ module.exports = {
 
   // Warning: Ensure that <authorized_keys> is NOT empty so only <authorized_keys> could access this bostr bouncer
   private_keys: {
-    // "pubkey-in-hex": "privatekey"
+    // "pubkey-in-hex": "privatekey",
+    // "pubkey-in-hex": "nsec ...."
   }
+  // Tip: If you want to convert your pubkey/privatekey to hex,
+  //      You could run the following command:
+  //        $ node hexconverter.js npub....
+  //        $ node hexconverter.js nsec....
 
   // Server information.
   // Only for when nostr client requesting server information.
diff --git a/hexconverter.js b/hexconverter.js
new file mode 100644
index 0000000..c174847
--- /dev/null
+++ b/hexconverter.js
@@ -0,0 +1,8 @@
+const { nip19 } = require("nostr-tools");
+const argv = process.argv.slice(2);
+
+if (!argv.length) return console.log("Usage: node hexconverter.js <npub....|nsec....> ....");
+
+for (i of argv) {
+  console.log(nip19.decode(i).data);
+}
diff --git a/nip42.js b/nip42.js
index 6c0aa59..608246f 100644
--- a/nip42.js
+++ b/nip42.js
@@ -1,7 +1,9 @@
-const { getEventHash, getSignature } = require("nostr-tools");
+const { getEventHash, getSignature, nip19 } = require("nostr-tools");
 
 module.exports = (relay, pubkey, privkey, challenge) => {
   if (!privkey) return;
+  if (privkey.startsWith("nsec")) privkey = nip19.decode(privkey).data;
+
   let signed_challenge = {
     pubkey,
     created_at: Math.floor(Date.now() / 1000),