Readded style as local intended

.gitignore

@@ -1,3 +1,4 @@
 venv/
+.venv/
 __pycache__/
 *.pyc

app.py

@@ -1,5 +1,12 @@
 from flask import Flask, request, jsonify, render_template, abort
-import secrets, crypt, os
+from argon2 import PasswordHasher
+from argon2.low_level import Type as ArgonType, hash_secret
+import secrets, os
+
+try:
+    import crypt
+except ImportError:
+    import crypt_r as crypt
 
 app = Flask(__name__, static_folder='static', template_folder='templates')
 
@@ -8,10 +15,13 @@ MIN_LEN = 16
 MIN_SALT_LEN = 8
 MAX_SALT_LEN = 16
 
+ph = PasswordHasher()
 
 ALG_PREFIX = {
     'sha512': '$6$',
     'sha256': '$5$',
+    'argon2_std': '$argon2id$',
+    'argon2_copyparty': '+'
 }
 
 # The main route
@@ -30,6 +40,7 @@ def gensalt():
 @app.route('/hash', methods=['POST'])
 def do_hash():
     data = request.get_json() or {}
+    username = data.get('username', '')
     password = data.get('password', '')
     salt = data.get('salt', '')
     algorithm = data.get('algorithm', 'sha512')
@@ -37,17 +48,49 @@ def do_hash():
 
     if not isinstance(password, str) or not isinstance(salt, str):
         abort(400, 'Invalid input')
+
     if len(password) < MIN_LEN:
         abort(400, f'Password must be at least {MIN_LEN} characters')
+
+    if algorithm == 'argon2_copyparty':
+        if (username == '' or username == None):
+            abort(400, 'Please type your username.')
+
+        specified_salt = 'LVZ1TJMdAIdLyBla6nWDexFt'
+
+        full_block = f"{username}:{password}"
+
+        b_pass = full_block.encode('utf-8')
+        b_salt = specified_salt.encode('utf-8')
+
+        raw_hash_copyparty = hash_secret(
+            secret = b_pass,
+            salt = b_salt,
+            time_cost = 3,
+            memory_cost = 256 * 1024,
+            parallelism = 4,
+            hash_len = 24,
+            type = ArgonType.ID,
+            version = 19
+        )
+
+        hash_only = raw_hash_copyparty.split(b"$")[-1].decode('utf-8')
+        final_hash = "+" + hash_only.replace('/', "_").replace('+', '-')
+
+        return jsonify({'hash': final_hash})
+
     if len(salt) < MIN_SALT_LEN or len(salt) > MAX_SALT_LEN:
         abort(400, f'Salt must be between {MIN_SALT_LEN} and {MAX_SALT_LEN} characters')
 
+    if algorithm == 'argon2_std':
+        hashed = ph.hash(password, salt = salt.encode('utf-8'))
+        return jsonify({'hash': hashed})
+
     prefix = ALG_PREFIX.get(algorithm)
 
     if prefix is None:
         abort(400, 'Unsupported algorithm')
 
-
     full_salt = f"{prefix}{salt}"
     hashed = crypt.crypt(password, full_salt)
     return jsonify({'hash': hashed})

requirements.txt

@@ -1,9 +1,14 @@
+argon2-cffi==25.1.0
+argon2-cffi-bindings==25.1.0
 blinker==1.9.0
+cffi==2.0.0
 click==8.3.0
 colorama==0.4.6
+crypt_r==3.13.1
 Flask==3.1.2
 itsdangerous==2.2.0
 Jinja2==3.1.6
 MarkupSafe==3.0.3
 passlib==1.7.4
+pycparser==3.0
 Werkzeug==3.1.3

static/css/style.css

@@ -40,6 +40,14 @@ button:hover {
    cursor: pointer;
 }
 
+button:disabled,
+input:disabled {
+    background: #666666;
+    color: #aaaaaa;
+    cursor: not-allowed;
+    filter: grayscale(1);
+}
+
 .row {
     display: flex;
     gap: 8px

static/js/main.js

@@ -6,6 +6,7 @@ const hashBtn = document.getElementById('hashBtn');
 const result = document.getElementById('result');
 const clearBtn = document.getElementById('clearBtn');
 const resultBtn = document.getElementById('resultBtn');
+const username = document.getElementById('username');
 
 const MIN_PASS_LEN = 16;
 const MIN_SALT_LEN = 8;
@@ -19,22 +20,53 @@ gensaltBtn.addEventListener('click', async () => {
     salt.value = data.salt;
 });
 
+const updateUI = () => {
+    const isCopyparty = algorithm.value === 'argon2_copyparty';
+
+    salt.disabled = isCopyparty;
+    gensaltBtn.disabled = isCopyparty;
+    username.disabled = !isCopyparty;
+
+    if (isCopyparty) {
+        salt.value = "LVZ1TJMdAIdLyBla6nWDexFt";
+        salt.style.opacity = "0.5";
+    } else {
+        salt.value = "";
+        salt.style.opacity = "";
+        username.value = "";
+    }
+};
+
+algorithm.addEventListener('change', updateUI);
+window.addEventListener('DOMContentLoaded', updateUI);
+
 hashBtn.addEventListener('click', async () => {
     const pass = password.value || '';
     const s = salt.value || '';
     const alg = algorithm.value;
+    const usr = username.value || '';
 
     if (pass.length < MIN_PASS_LEN) { 
         alert('Password must be at least ' + MIN_PASS_LEN + ' characters');
         return; 
     }
 
-    if (s.length < MIN_SALT_LEN || s.length > MAX_SALT_LEN) { 
-        alert('Salt must be between ' + MIN_SALT_LEN + ' and ' + MAX_SALT_LEN + ' characters');
-        return; 
+    if (alg !== 'argon2_copyparty') {
+        if (s.length < MIN_SALT_LEN || s.length > MAX_SALT_LEN) {
+            alert('Salt must be between ' + MIN_SALT_LEN + ' and ' + MAX_SALT_LEN + ' characters');
+            return;
+        }
     }
 
-    const payload = { password: pass, salt: s, algorithm: alg };
+    if (alg == 'argon2_copyparty') {
+        if (usr === '') {
+            alert('Please type your username.');
+            return;
+        }
+    }
+
+
+    const payload = { username: usr, password: pass, salt: s, algorithm: alg };
     const res = await fetch('/hash', {
         method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify(payload)
     });
@@ -46,22 +78,22 @@ hashBtn.addEventListener('click', async () => {
     }
 
     const data = await res.json();
-    result.value = data.hash;
+    result.textContent = data.hash;
 });
 
 clearBtn.addEventListener('click', () => {
     password.value = '';
     salt.value = '';
-    result.value = '';
+    result.textContent = 'Result will appear here';
 });
 
 resultBtn.addEventListener('click', async  () => {
-   if (!result.value) {
+   if (!result.textContent || result.textContent === 'Result will appear here') {
       alert('Nothing to copy.');
    }
 
    try {
-      await navigator.clipboard.writeText(result.value);
+      await navigator.clipboard.writeText(result.textContent);
       alert('Copied to clipboard.');
    } catch (err) {
       alert('Failed to copy: ' + err);

templates/index.html

@@ -13,9 +13,11 @@
         <h2>The Night Club's Hashing Tool</h2>
 
         <label for="algorithm">Algorithm</label>
-        <select id="algorithm">
+        <select id="algorithm" onchange="updateUI()">
             <option value="sha512">sha512-crypt ($6$)</option>
             <option value="sha256">sha256-crypt ($5$)</option>
+            <option value="argon2_std">argon2 ($argon2id$)</option>
+            <option value="argon2_copyparty">argon2 (copyparty)</option>
         </select>
         
 
@@ -30,6 +32,8 @@
         </div>
         <div class="note">Salt characters limited to <code>./0-9A-Za-z</code>.</div>
 
+        <label for="username">Username (copyparty only)</label>
+        <input id="username" type="text" placeholder="Enter username">
 
         <div class="controls">
             <button id="hashBtn">Compute hash</button>
@@ -37,9 +41,9 @@
         </div>
 
 
-        <label for="result">Result</label>
+        <label>Result</label>
+        <pre id="result" class="result-box">Result will appear here</pre>
 	<button id="resultBtn" type="button">Copy result</button>
-        <textarea id="result" rows="4" readonly placeholder="Result will appear here"></textarea>
     </div>
 
     <script src="/static/js/main.js"></script>