a small tool to be used as a frontend to pixiewps to do a smart series of
short timespan checks when the initial run fails, before finally doing a
full --force run.
additionally, it supports an option -u where the caller can pass the timestamp
contained in the AP's last beacon packet before the attack, which practically
gives us already the exact seed when we guess the router reset date correctly.
theoretically, we could just pass a range of ~60 seconds around the guessed
date and would hit it with huge likelyhood. however pixiewps needs a relatively
big amount of time to get the cracking started, so effectively the amount of
time needed to scan for a whole month isn't much longer than for a few seconds.
a future version of reaver might automatically supply that uptime timestamp.
in my personal setup, i renamed the pixiewps binary to pixie-core, and compile
the program with the CPPFLAGS=-DPIXIE_BIN=\"pixie-core\", then rename pixie-
wrapper to pixiewps itself, so this is what gets called by reaver.
This reverts commit e552d93a50a25e902dc6b44d29f174fd9a8671bb.
Usign GCC version 5.4.0 20160609 the code was 3 times slower (probably due to missing inlining and other optimizations). The binary was also >15kB bigger.
we can disable highly optimized mul/sqr operations for about 30% speed
decrease but saving a lot in binary size.
only build the files necessary by including an explicit list of filenames
rather than doing a wildcard over tfm/*.c.
