What are some common problems with short (12 or fewer characters) ASCII passphrases in WPA/WPA2-Personal networks?
Response:
They are more susceptible to dictionary attacks than longer passphrases.
They lead to weak group keys in a BSS.
They only produce a 64-bit PMK instead of a 256-bit PMK.
Very few AP and client vendors support entry of an ASCII-based passphrase.
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