![]() The impact of having to use a brute force approach is substantial. Conversely, if you want to have an unbreakable wireless network at home, use WPA/WPA2 and a 63 character password composed of random characters including special symbols. The only time you can crack the pre-shared key is if it is a dictionary word or relatively short in length. Since the pre-shared key can be from 8 to 63 characters in length, it effectively becomes impossible to crack the pre-shared key. Handshaking is done when the client connects to the network.Īlthough not absolutely true, for the purposes of this tutorial, consider it true. ![]() The only thing that does give the information to start an attack is the handshake between client and AP. ![]() That is, because the key is not static, so collecting IVs like when cracking WEP encryption, does not speed up the attack. ![]() Unlike WEP, where statistical methods can be used to speed up the cracking process, only plain brute force techniques can be used against WPA/WPA2. This is the approach used to crack the WPA/WPA2 pre-shared key. There is another important difference between cracking WPA/WPA2 and WEP. So make sure airodump-ng shows the network as having the authentication type of PSK, otherwise, don't bother trying to crack it. aircrack-ng can ONLY crack pre-shared keys. WPA/WPA2 supports many types of authentication beyond pre-shared keys. The WPA Packet Capture Explained tutorial is a companion to this tutorial. This is the link to download the PDF directly. The best document describing WPA is Wi-Fi Security - WEP, WPA and WPA2. The Wiki links page has a WPA/WPA2 section. I recommend you do some background reading to better understand what WPA/WPA2 is. ![]() This tutorial walks you through cracking WPA/WPA2 networks which use pre-shared keys. ![]()
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