iZsh [Sat, 21 Jun 2014 22:26:38 +0000 (00:26 +0200)]
New LF edge detection algorithm + lowpass filter
This is a new LF edge detection algorithm for the FPGA.
- It uses a low-pass IIR filter to clean the signal
(see https://fail0verflow.com/blog/2014/proxmark3-fpga-iir-filter.html)
- The algorithm is able to detect consecutive peaks in the same
direction
- It uses an envelope follower to dynamically adjust the peak thresholds
- The main threshold used in the envelope follower can be set from the ARM side
fpga/lf_edge_detect.v,
fpga/lp20khz_1MSa_iir_filter.v,
fpga/min_max_tracker.v: New file.
armsrc/apps.h (FPGA_CMD_SET_USER_BYTE1,
FPGA_CMD_SET_EDGE_DETECT_THRESHOLD): New FPGA command.
fpga/fpga_lf.v: Modify accordingly/Add a 8bit user register.
fpga/fpga_lf.bit: Update accordingly.
fpga/tests: New directory for testbenches
fpga/tests/Makefile: New file. It compiles the testbenches
and runs all the tests by default (comparing with the golden output)
fpga/tests/tb_lp20khz_1MSa_iir_filter.v,
fpga/tests/tb_min_max_tracker.v,
fpga/tests/tb_lf_edge_detect.v: New testbenches
fpga/tests/plot_edgedetect.py: New script to plot the results from
the edge detection tests.
fpga/tests/tb_data: New directory for data and golden outputs
Implemented client side changes for iclass hack, attempted to fix issues with trace. The trace functionality from iso14443 has been rewritten, unfortunately iclass used that also, which made iclass 'list' stop functioning, both for simulation and snooping
Refactoring low frequency operations, now 'lf hid fskdemod' is more stable. Also did changes to handling ioprox tags, this is yet untested, so until it's been tested it should be kept off 'stable' branch
pwpiwi [Tue, 25 Mar 2014 20:38:24 +0000 (21:38 +0100)]
Improvements/Fixes to 14443 sniffing/snooping
- fixed a circular buffer rollover bug in iso14443a.c
- fixed 7 Byte UID handling in hf mf sniff
- fixed "cannot append" error in hf mf sniff d
- fixed hint on mfkey32 in hf mf sim x
- fixed hf mf sniff sometimes showing rogue data from previous calloc
- improve snooping/sniffing by syncing modulation detector window with reader signal (hi_iso14443a.v)
- code cleanup of hi_iso14443a.v
W8M2Hg9lLmWqXSGC [Mon, 17 Mar 2014 04:41:33 +0000 (15:41 +1100)]
Added an important notice.
Moving the repository from google code to GitHub is up for discussion!
Please check out the following thread and post your comments...
http://www.proxmark.org/forum/viewtopic.php?id=1902
Discussions will close on March 31st.
More robust iso14443a sniffing/simulation functions by
- iso14443a.c: less strict Miller/Manchester decoders
- FPGA hi_iso14443a.v: syncing on external readers' clock when simulating and sniffing.
- fixed iso1443a ManchesterDecoder in order to fix broken Snoop/Sniff
- enhanced tracing: hf 14a list now shows meaningful timing information. With new option f it also shows the frame delay times (fdt)
- small fix for hf 14b list - it used to run into the trace trailer
- hf 14a sim now obeys iso14443 timing (fdt of 1172 or 1234 resp.)
Note: you need to flash FPGA as well.
More details in http://www.proxmark.org/forum/viewtopic.php?pid=9721#p9721
Various improvements on the Mifare1kSimulation. Fixed issue with tracebuffer not being cleared, fixed issue with 'static' errors, added modes for doing reader-only attack, added interactive mode, added possibility to set UID from cmdline, either 7-byte or 4-byte. See http://www.proxmark.org/forum/viewtopic.php?id=1529 and http://www.proxmark.org/forum/viewtopic.php?id=1649&p=3 for some more background and discussion
- improved reader sensitivity for 14443a cards (FPGA change!)
- implemented ISO 14443A anticollision loop
See http://www.proxmark.org/forum/viewtopic.php?id=1797 further details
Changed html template, in order to make it more generic and be usable on other types of data than mifare, now supports different highlighters. Implemented are NDEF and Mifare
Changes to how dumping is performed, now utilises a library. This is in preparation for a more generic dumping of different types of cards. Also added functionality to html-dump .eml-files
roel@libnfc.org [Fri, 11 Oct 2013 08:37:08 +0000 (08:37 +0000)]
with the declaration of 'uint8_t destination[8]', 'destination' is already a pointer, don't try to get the address of it by using '&destination', then you will get a pointer to a pointer.
projects / proxmark3-svn / log