diff --git a/src/front/pages/login.js b/src/front/pages/login.js
index 752c376..cf5fb92 100644
--- a/src/front/pages/login.js
+++ b/src/front/pages/login.js
@@ -1,6 +1,9 @@
 const checkNostrExtension = require('../utils/checkNostrExtension');
+const loginService = require('../services/loginService');
 
 const loginsFunction = () => {
+  const rejectedNostrWarning = document.querySelector('#rejected-nostr-nudges');
+
   window.onload = () => {
     checkNostrExtension(
       window,
@@ -16,55 +19,14 @@ const loginsFunction = () => {
   };
 
   async function login() {
-    let challengeResponse;
-    try {
-      challengeResponse = await fetch('/api/login/nostr-challenge', {
-        method: 'GET',
-        headers: {
-          'Content-Type': 'application/json',
-        },
-      });
-    } catch (error) {
-      console.log(`Something went wrong: ${error}`);
-      return;
-    }
-
-    const { challenge } = await challengeResponse.json();
-
-    let pubkey;
-    try {
-      pubkey = await window.nostr.getPublicKey();
-    } catch (error) {
-      document.querySelector('#rejected-nostr-nudges').style.display = 'block';
-      return;
-    }
-    const event = {
-      kind: 22242,
-      created_at: Math.floor(Date.now() / 1000),
-      tags: [['challenge', challenge]],
-      content: 'Sign this challenge to authenticate',
-      pubkey: pubkey,
-    };
-
-    let signedEvent;
-    try {
-      signedEvent = await window.nostr.signEvent(event);
-    } catch (error) {
-      document.querySelector('#rejected-nostr-nudges').style.display = 'block';
-      return;
-    }
-
-    let verifyResponse;
-    try {
-      verifyResponse = await fetch('/api/login/nostr-verify', {
-        method: 'POST',
-        headers: { 'Content-Type': 'application/json' },
-        body: JSON.stringify(signedEvent),
-      });
-    } catch (error) {
-      console.log(`Something went wrong: ${error}`);
-      return;
-    }
+    const verifyResponse = await loginService.requestAndRespondLoginChallenge({
+      onRejectedPubKeyCallback: () => {
+        rejectedNostrWarning.style.display = 'block';
+      },
+      onRejectedSignatureCallback: () => {
+        rejectedNostrWarning.style.display = 'block';
+      },
+    });
 
     if (verifyResponse.status === 403) {
       document.querySelector('#rejected-public-key').style.display = 'block';
diff --git a/src/front/services/loginService.js b/src/front/services/loginService.js
new file mode 100644
index 0000000..d1f5815
--- /dev/null
+++ b/src/front/services/loginService.js
@@ -0,0 +1,65 @@
+const requestAndRespondLoginChallenge = async ({
+  onRejectedPubKeyCallback,
+  onRejectedSignatureCallback,
+}) => {
+  onRejectedPubKeyCallback = () => {
+    document.querySelector('#rejected-nostr-nudges').style.display = 'block';
+  };
+  onRejectedSignatureCallback = onRejectedPubKeyCallback;
+
+  let challengeResponse;
+  try {
+    challengeResponse = await fetch('/api/login/nostr-challenge', {
+      method: 'GET',
+      headers: {
+        'Content-Type': 'application/json',
+      },
+    });
+  } catch (error) {
+    console.log(`Something went wrong: ${error}`);
+    return;
+  }
+
+  const { challenge } = await challengeResponse.json();
+
+  let pubkey;
+  try {
+    pubkey = await window.nostr.getPublicKey();
+  } catch (error) {
+    onRejectedPubKeyCallback();
+    return;
+  }
+  const event = {
+    kind: 22242,
+    created_at: Math.floor(Date.now() / 1000),
+    tags: [['challenge', challenge]],
+    content: 'Sign this challenge to authenticate',
+    pubkey: pubkey,
+  };
+
+  let signedEvent;
+  try {
+    signedEvent = await window.nostr.signEvent(event);
+  } catch (error) {
+    onRejectedSignatureCallback();
+    return;
+  }
+
+  let verifyResponse;
+  try {
+    verifyResponse = await fetch('/api/login/nostr-verify', {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify(signedEvent),
+    });
+  } catch (error) {
+    console.log(`Something went wrong: ${error}`);
+    return;
+  }
+
+  return verifyResponse;
+};
+
+module.exports = {
+  requestAndRespondLoginChallenge,
+};