Coge esto, imprimelo, pegalo en una sarten, y atizale con ella a tu administrador de sistemas hasta que le entre en la cabeza:
Cita:
WPA2-PSK (Preshared Key) is the strongest and most practical form of WPA for most home users. WPA2 is more secure than WPA because it uses the much stronger AES (Advanced Encryption Standard) protocol for encrypting packets. [more] [Smart Computing]
The encryption key may be from 8 to 63 printable ASCII characters or 64 hexadecimal digits. The maximum length results in 256 bit strength, which is what 64 (hex digits) multiplied by 4 bits/digit yields.
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http://cybercoyote.org/classes/wifi/wpa2.shtml