libnfc mifare desfire w/default keys

/Users/matt/code/nfc/nfcdemo/build/Debug/nfcdemo use libnfc 1.3.2 (r294)
Connected to NFC reader: Philips / USB TAMA - PN531 v3.4
The following (NFC) ISO14443A tag was found:
    ATQA (SENS_RES): 03  44
       UID (NFCID1): 88  04  3e  60  81  00  1f  80
      SAK (SEL_RES): 20
          ATS (ATR): 06  75  77  81  02  80
Sent message, got 8 bytes
af  04  01  01  00  02  18  05
Sent message, got 8 bytes
af  04  01  01  00  06  18  05
Sent message, got 15 bytes
00  04  3e  60  81  00  1f  80  8e  64  11  49  70  46  05
Sent message, got 1 bytes
9d
Sent message, got 1 bytes
de
Listing applications
Sent message, got 4 bytes
00  00  00  01
Sent message, got 1 bytes
00
Key: 00  00  00  00  00  00  00  00
ivec: 00  00  00  00  00  00  00  00
Command sent successfully, got 9 bytes
af  4a  5a  1e  70  54  ec  4f  fb
e(PICC_RndB)          4a  5a  1e  70  54  ec  4f  fb  00  00  00  00  00  00  00  00
  PICC_RndB           dd  94  8a  96  be  4f  70  fe  00  00  00  00  00  00  00  00
  PCD_RndA            51  f8  fb  04  02  20  5e  a7
  PCD_RndA+PCD_RndB'  51  f8  fb  04  02  20  5e  a7  94  8a  96  be  4f  70  fe  dd
d(PCD_RndA+PCD_RndB') e0  84  bb  bc  2c  77  a7  ca  f0  3e  53  28  6a  81  5b  56
Command sent successfully, got 9 bytes
00  ba  68  00  4a  09  d8  93  5e
e(PICC_RndA')         ba  68  00  4a  09  d8  93  5e
  PICC_RndA'          f8  fb  04  02  20  5e  a7  51
  PCD_RndA'           f8  fb  04  02  20  5e  a7  51
Get file IDs: Command sent successfully, got 4 bytes
00  00  01  02
Read file 01:Command sent successfully, got 25 bytes
00  54  75  65  20  4d  61  72  20  32  33  20  32  32  3a  33  33  3a  31  37  20  32  30  31  30
The data in the sector is: Tue Mar 23 22:33:17 2010
Sent message, got 8 bytes
00  00  01  00  00  04  00  00
Write file command: 3d  02  00  00  00  18  00  00  54  75  65  20  4d  61  72  20  32  33  20  32  32  3a  33  33  3a  32  33  20  32  30  31  30
Command sent successfully, got 1 bytes
00