From 79048ae42da8e5fbc2b036c81df7029f5d925670 Mon Sep 17 00:00:00 2001
From: droka <daniel.roka@tutanota.com>
Date: Tue, 6 Dec 2022 22:15:22 +0100
Subject: [PATCH] flag encoder beta

---
 encode_flag/index.html | 56 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 56 insertions(+)
 create mode 100644 encode_flag/index.html
diff --git a/encode_flag/index.html b/encode_flag/index.html
new file mode 100644
index 0000000..1b8fe91
--- /dev/null
+++ b/encode_flag/index.html
@@ -0,0 +1,56 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>CCTF flag encoder</title>
+    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.2.3/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-rbsA2VBKQhggwzxH7pPCaAqO46MgnOM80zW1RWuH61DGLwZJEdK2Kadq2F9CUG65" crossorigin="anonymous">
+  </head>
+
+  <body>
+    <div style="padding: 20px">
+    <h1>CCTF flag encoder</h1>
+    <details>
+      <summary>Instructions</summary>
+      <ul>
+        <li>Enter your flag to the box, and press encode!</li>
+        <li>Your encoded flag will appear below.</li>
+        <li>Copy the encoded flag into your contract call.</li>
+      </ul>
+    </details>
+    <br />
+    <div class="form">
+      <div class="form-group">
+        <input class="flag" placeholder="enter the flag" /><-- Your flag
+      </div>
+      <div class="form-group">
+        <input class="address" placeholder="enter the address" /><-- Your address
+      </div>
+      <div class="form-group">
+        <button class="encode">Encode Flag</button>
+      </div>
+      <div class="form-group">
+          <input class="encoded" disabled="true" placeholder="" /><-- Your encoded result
+      </div>
+    </div>
+  </div>
+  </body>
+  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.2.3/dist/js/bootstrap.min.js" integrity="sha384-cuYeSxntonz0PPNlHhBs68uyIAVpIIOZZ5JqeqvYYIcEL727kskC66kF92t6Xl2V" crossorigin="anonymous"></script>
+  <script src="https://cdn.jsdelivr.net/npm/web3@latest/dist/web3.min.js"></script>
+  <script>
+    const web3 = new Web3(new Web3.providers.HttpProvider('http://127.0.0.1:8545'));
+    console.log(web3);
+    const encodeButton = document.querySelector('button.encode');
+    encodeButton.addEventListener('click', encodeMessage);
+
+    async function encodeMessage() {
+      try {
+        const flag = document.querySelector('.flag').value;
+        const address = document.querySelector('.address').value;
+        const signedMsg = web3.eth.accounts.sign(address, flag);
+        document.querySelector('.encoded').value = signedMsg.signature;
+      } catch (err) {
+        console.error(err);
+        alert('Problem happened: ' + err.message || err);
+      }
+    }
+  </script>
+</html>
