nfc-mfclassic(1) NFC Utilities nfc-mfclassic(1)NAMEnfc-mfclassic - MIFARE Classic command line tool
SYNOPSISnfc-mfclassic f|r|R|w|W a|A|b|B DUMP [ KEYS [f] ]
DESCRIPTIONnfc-mfclassic is a MIFARE Classic tool that allow to read or write DUMP
file using MIFARE keys provided in KEYS file.
MIFARE Classic tag is one of the most widely used RFID tags.
The firmware in the NFC controller supports authenticating, reading and
writing to/from MIFARE Classic tags. This tool demonstrates the speed
of this library and its ease-of-use. It's possible to read and write
the complete content of a MIFARE Classic 4KB tag within 1 second. It
uses a binary MIFARE Dump file (MFD) to store the keys and data for all
sectors.
Be cautious that some parts of a MIFARE Classic memory are used for r/w
access of the rest of the memory, so please read the tag documentation
before experimenting too much!
The f option to format the card will reset all keys to FFFFFFFFFFFF,
all data to 00 and all ACLs to default.
The W option allows writing of special MIFARE cards that can be
'unlocked' to allow block 0 to be overwritten. This includes UID and
manufacturer data. Take care when amending UIDs to set the correct BCC
(UID checksum). Currently only 4 byte UIDs are supported.
Similarly, the R option allows an 'unlocked' read. This bypasses
authentication and allows reading of the Key A and Key B data regard‐
less of ACLs.
R/W errors on some blocks can be either considered as critical or
ignored. To halt on first error, specify keys with lowercase ( a or b
). To ignore such errors, use uppercase ( A or B ).
*** Note that W and R options only work on special versions of MIFARE
1K cards (Chinese clones).
OPTIONS
f | r | R | w | W
Perform format ( f ) or read from ( r ) or unlocked read from (
R ) or write to ( w ) or unlocked write to ( W ) card.
a | A | b | B
Use A or B MIFARE keys. Halt on errors ( a | b ) or tolerate
errors ( A | B ).
DUMP MiFare Dump (MFD) used to write (card to MFD) or (MFD to card)
KEYS MiFare Dump (MFD) that contains the keys (optional). Data part
of the dump is ignored.
f Force using the keyfile KEYS even if UID does not match
(optional).
BUGS
Please report any bugs on the libnfc issue tracker at:
http://code.google.com/p/libnfc/issues
LICENCE
libnfc is licensed under the GNU Lesser General Public License (LGPL),
version 3.
libnfc-utils and libnfc-examples are covered by the the BSD 2-Clause
license.
AUTHORS
Adam Laurie <adam@algroup.co.uk>,
Roel Verdult <roel@libnfc.org>,
Romain Tartière <romain@libnfc.org>,
Romuald Conty <romuald@libnfc.org>.
This manual page was written by Romuald Conty <romuald@libnfc.org>. It
is licensed under the terms of the GNU GPL (version 2 or later).
libnfc Nov 02, 2009 nfc-mfclassic(1)
