proxmark3/tools/hitag2crack/crack5opencl

ht2crack5opencl

Build

It requires an OpenCL framework.

If required, edit Makefile and adjust INCLUDE and LIBS directives to your setup.

make clean
make

Run

You'll need just two nR aR pairs. These are the encrypted nonces and challenge response values. They should be in hex.

./ht2crack5opencl <UID> <nR1> <aR1> <nR2> <aR2>

UID is the UID of the tag that you used to gather the nR aR values.

Following the help:

$ ./ht2crack5opencl 
./ht2crack5opencl [options] {UID} {nR1} {aR1} {nR2} {aR2}

Options:
-p     : select OpenCL Platform(s). Multiple allowed (1,2,3,etc.). [Default: all]
-d     : select OpenCL Device(s). Multiple allowed (1,2,3,etc.). [Default: all]
-D     : select OpenCL Device Type. 0: GPU, 1: CPU, 2: all. [Default: GPU]
-S     : select the thread scheduler type. 0: sequential, 1: asynchronous. [Default 1]
-P     : select the Profile, from 0 to 10. [Default: auto-tuning]
-F     : force verify key with OpenCL instead of CPU. [Default: disabled]
-Q     : select queue engine. 0: forward, 1: reverse, 2: random. [Default: 0]
-s     : show the list of OpenCL platforms/devices, then exit
-V     : enable debug messages
-v     : show the version
-h     : show this help

Example, select devices 1, 2 and 3 using platform 1 and 2, with random queue engine:

./ht2crack5opencl -D 2 -Q 2 -p 1,2 -d 1,2,3 2ab12bf2 4B71E49D 6A606453 D79BD94B 16A2255B

You can found the correct OpenCL Platform ID's (-p) and Device ID's (-d) by:

./ht2crack5opencl -s