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#1 2016-04-11 14:46:05
Speed ups in 'hf mf chk'
I got inspired when I was looking at @pivi's fast authentications in his 'hardnested' and thought it may work for 'hf mf chk' aswell.
So I added it, and it does work great.
TEST settings:
Mifare S70 / 4K
195 keys file, both A/B
cmd used: 'hf mf chk *4 ? d default_keys.dic'
--------------------------------------------------------
Maximum num of authentications: 15600. (40sectors*2*195)
--------------------------------------------------------
All keys found:
ICE : 3:04 mins, (157722 ticks)
PM3: 5:46 mins, (306882 ticks)
----------------------Thats some nice speedups! 51% if I look at the ticks.
#6 2017-03-26 23:45:03
Re: Speed ups in 'hf mf chk'
Been fiddeling with a improved check keys functionality.
__MAXIMUM RUN TESTS
The following test is a worst-case scenario, where all needed keys are last in dictionary file
TEST settings
----------------
Mifare S70 / 4K, 291 keys file, both A/B
correct keys end of file, assuring maximum run time.
- hf mf chk *4 ? d a.dic
----------------------------------------------------------------
Maximum number of authentications: 23280 (40 sectors * 2 * 291)
----------------------------------------------------------------
ver | execution time | foundkeys
--------+-------------------------------+-----------
PM3-Mas | 615s (10m 15s) | ticks | 66/80
ICE-OLD | 307s (5m 7s) | 306685 ticks | 80/80
ICE-NEW | 271s (4m 31s) | 271045 ticks | 80/80
--results maximum run
56% speedup against PM3 master.
11% speedup against current ice versionMifare S50 / 1K, 291 keys file , both A/B
correct keys end of file, assuring maximum run time.
- hf mf chk *1 ? d a.dic
ver | execution time | foundkeys
--------+------------------------------+-----------
PM3-Mas | 248s (4m 8s) | | 32/32
ICE-OLD | 157s (2m 37s) | 156891 ticks | 32/32
ICE-NEW | 141s (2m 21s) | 141460 ticks | 32/32
--results maximum run
43% speedup against PM3 master.
10% speedup against current ice version__MINIMUM RUN TESTS
The following tests is a best-case scenario, where all needed keys are first in dictionary file
and a test where we only use the default hardcoded keys (no file)
Mifare S70 / 4K, 291 keys file, both A/B
correct keys start of file, assuring minimum run time.
all card keys set to 0xFFFFFFFFFFFF
- hf mf chk *4 ? d a.dic
----------------------------------------------------------------
Maximum number of authentications: 23280 (40 sectors * 2 * 291)
----------------------------------------------------------------
ver | execution time | foundkeys
--------+-------------------+-----------
PM3-Mas | 126.4s| ticks | 80/80
ICE-OLD | 7s | 7041 ticks | 80/80
ICE-NEW | 2.9s | 2913 ticks | 80/80
--results minimum run
58% speedup against current ice versionMifare S70 / 4K, both A/B, testkeys: default keys
all card keys set to 0xFFFFFFFFFFFF
- hf mf chk *4 ?
----------------------------------------------------------------
Maximum number of authentications: 23280 (40 sectors * 2 * 291)
----------------------------------------------------------------
ver | execution time | foundkeys
--------+--------------------+-----------
PM3-Mas | 10.1s | xxx ticks | 80/80
ICE-OLD | 4.8s | 4834 ticks | 80/80
ICE-NEW | 0.6s | 620 ticks | 80/80
--results minimum run
94% speedup against PM3 master
87% speedup against current ice versionMifare S50 / 1K, both A/B, testkeys: default keys
all card keys set to 0xFFFFFFFFFFFF
- hf mf chk *1 ?
ver | execution time | foundkeys
--------+-------------------+-----------
PM3-Mas | 4.0s | | 32/32
ICE-OLD | 1.9s | 1871 ticks | 32/32
ICE-NEW | 0.3s | 299 ticks | 32/32
--results minimum run
92.5% speedup against PM3 master
84% speedup against current ice version