Update app.py

app.py

@@ -50,62 +50,85 @@ def decrypt_data(encrypted_data, key):
     return decrypted_data[:-padding_length]
 
 # Streamlit UI
-st.title("SentinelCryptography")
-st.subheader("Unbreakable Encryption for the Quantum Era")
-
-# Encryption Section
-st.header("🔒 Encrypt a Message")
-message = st.text_input("Enter Message:")
-seed = st.text_input("Enter Seed (Password):")
-
-if st.button("Encrypt"):
-    if message and seed:
-        key = generate_key(seed, 5)
-        encrypted_message = encrypt_data(message.encode(), key)
-        st.success(f"Encrypted Message (Base64): {base64.b64encode(encrypted_message).decode()}")
-    else:
-        st.error("Please enter both a message and a seed.")
-
-# Decryption Section
-st.header("🔓 Decrypt a Message")
-encrypted_message_input = st.text_input("Enter Encrypted Message (Base64):")
-
-if st.button("Decrypt"):
-    if encrypted_message_input and seed:
-        try:
-            encrypted_message = base64.b64decode(encrypted_message_input)
-            key = generate_key(seed, 5)
-            decrypted_message = decrypt_data(encrypted_message, key)
-            st.success(f"Decrypted Message: {decrypted_message.decode()}")
-        except Exception as e:
-            st.error("Decryption failed. Please check your input.")
-    else:
-        st.error("Please enter an encrypted message and the seed.")
-
-# Roadmap Section
-st.header("📍 SentinelCryptography Roadmap for 2025")
-roadmap = """
-1. **Q1 2025:** Expand support for post-quantum cryptographic algorithms.
-2. **Q2 2025:** Develop APIs for seamless integration into web and mobile apps.
-3. **Q3 2025:** Introduce community challenges to enhance security testing.
-4. **Q4 2025:** Launch a dedicated SentinelCryptography platform with advanced analytics.
-"""
-st.markdown(roadmap)
-st.image("https://via.placeholder.com/800x400.png?text=SentinelCryptography+2025+Roadmap")  # Replace with actual infographic link
-
-# Donation Section
-st.header("💖 Support SentinelCryptography")
-st.markdown(
-    """
-Your donations help us streamline development and bring this open-source project to new heights.
-
-**Donate in Tether (USDT-ERC20):**
-- Wallet Address: `0xD5255523b1A6a144D9d034c70735b2dB729B49f0`
-
-Every contribution empowers us to create a safer, more connected world as we evolve with AI.
-"""
-)
-# Closing Statement
-st.info(
-    "SentinelCryptography is open source. Together, we can secure the future in the quantum era. Join us in this mission!"
-)
+
+import streamlit as st
+
+# --- Hero Section ---
+st.title("🛡 SentinelCryptography")
+st.subheader("A Quantum-Ready Encryption Guardian")
+st.write("""
+Not just another online AES tool. SentinelCryptography is designed as a living sentinel — 
+built for today’s digital security, aware of tomorrow’s quantum threats.
+""")
+
+# --- Encryption / Decryption Tool Placeholder ---
+st.markdown("---")
+st.header("🔑 Try it Out")
+st.write("Encrypt or decrypt your message with AES-256-CBC and our custom key derivation.")
+# (Insert your encrypt/decrypt input/output code here)
+
+# --- Knowledge Section ---
+st.markdown("---")
+st.header("📜 The Legacy of Encryption")
+
+st.write("""
+Encryption has evolved across human history:
+- **Ancient Era** — Substitution ciphers like Caesar’s shift cipher.
+- **Mechanical Age** — Enigma machines and rotor-based systems in WWII.
+- **Modern Cryptography** — DES (broken by brute force), then AES chosen as the global standard.
+""")
+
+st.write("""
+But while AES became the backbone of secure communication, many **online tools** that claim to 
+offer AES encryption are built on outdated or weakened foundations.
+""")
+
+# --- Weaknesses of Traditional Engines ---
+st.markdown("---")
+st.header("⚠️ Weaknesses of Traditional Online Engines")
+
+st.markdown("""
+- **AES-128 vs AES-256**  
+  AES-128 is mathematically strong today, but quantum algorithms (Grover’s) could cut its strength in half.  
+  AES-256 is far more resilient against this pressure.
+
+- **SHA-1 HMAC**  
+  Many tools use HMAC with SHA-1, which has been broken since 2017 (Google’s SHAttered attack).  
+  Even in HMAC, SHA-1 is considered unsafe for the future.
+
+- **CBC Mode Done Wrong**  
+  CBC requires a fresh random IV for each message. Many online engines ignore this, leaking patterns.
+
+- **No Key Derivation**  
+  User passwords are often treated directly as AES keys, making brute-force far easier.  
+  Sentinel uses a **custom Key Derivation Function (KDF)** for stronger defense.
+
+- **No Quantum Awareness**  
+  Traditional engines assume the world will remain pre-quantum. Sentinel does not.
+""")
+
+# --- Sentinel Difference ---
+st.markdown("---")
+st.header("🌐 The Sentinel Difference")
+
+st.markdown("""
+- **AES-256-CBC + Custom KDF** — stronger, adaptive protection.  
+- **Quantum-Resilient Design** — prepared for the next era of attacks.  
+- **Transparent & Open Source** — no black box, open to community audit.  
+- **Educational by Design** — teaching as much as it protects.  
+
+In short: where others offer a **lock**, Sentinel offers a **living shield**.
+""")
+
+# --- Future Roadmap ---
+st.markdown("---")
+st.header("🚀 Roadmap Ahead")
+
+st.write("""
+- Mobile and browser extension versions.  
+- File encryption and integration with decentralized storage.  
+- Visual encryption flow diagrams for education.  
+- Hackathons and community feature-building.  
+""")
+
+st.success("✨ SentinelCryptography — Built not just to encrypt, but to guard, teach, and endure.")