В оригинальном cap-файле все в порядке:

Parsing file 'tt.cap' (1/1)...

Parsed 384 packets (384 802.11-packets), got 1 AP(s)

#1: AccessPoint c8:d3:a3:28:d4:a6 ('Home_51'):

#1: Station 00:ae:fa:74:7e:93

#2: Station d0:df:c7:36:8f:80

#3: Station a0:b4:a5:61:82:b3, 1 handshake(s):

#1: HMAC_SHA1_AES, good*, spread 1