1  ## What are they?
 2  
 3  WPA (Wi-Fi Protected Access) and WPA2 are security protocols designed to protect Wi-Fi networks. They replaced the easily cracked WEP (Wired Equivalent Privacy) standard.
 4  
 5  ## Key Differences
 6  
 7  | Feature | WPA | WPA2 |
 8  |---|---|---|
 9  | Encryption | TKIP (Temporary Key Integrity Protocol) | AES (Advanced Encryption Standard) |
10  | Security | Less secure, vulnerable to some attacks | More secure, recommended for all networks |
11  | Authentication | Pre-shared key (PSK) or Enterprise | PSK or Enterprise |
12  
13  ## How they work
14  
15  Both protocols use a four-way handshake process for key exchange and authentication:
16  
17  **1. Connection Request:** A device sends a connection request to the router.
18  
19  **2. Router Response:** The router responds with its network information.
20  
21  **3. Key Generation & Exchange:**
22      * **PSK (Personal):** Both the device and router use the pre-shared password (your Wi-Fi password) and other information to generate a unique encryption key. This key is exchanged during the handshake.
23      * **Enterprise:**  The device and an authentication server (e.g., RADIUS server) use more secure methods like digital certificates to authenticate and generate the encryption key.
24  
25  **4. Connection Establishment:** Once the key is successfully exchanged and validated, the secure connection is established.
26  
27  [Video explaining this process](https://youtu.be/-Q_WXeEf8Fw?si=ARof_o_bW9Sw_cNL&t=326)
28  
29  ## Encryption
30  
31  * **WPA (TKIP):** Uses a weaker encryption method vulnerable to some attacks.
32  * **WPA2 (AES):** Uses the robust Advanced Encryption Standard, providing significantly stronger protection.
33  
34  ## Which one to use
35  
36  **Always use WPA2 if available.** WPA is outdated and has known vulnerabilities. Most modern devices and routers support WPA2.
37  
38  **Note:** WPA3 is the latest standard, offering even stronger security than WPA2. Consider upgrading to WPA3-compatible devices and routers for optimal protection. 
39