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aczid / crypto1_bs

Bitsliced Crypto-1 brute-forcer
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mfoc still fails with key found in crypto1_bs #23

Closed ghost closed 7 years ago

ghost commented 7 years ago

crypto1 cracks my keys just fine however when I feed one into mfoc it fails with the following message: mfoc: ERROR: No success, maybe you should increase the probes

I have tried both an A and a B key.

I just need one cracked key right?

The card is an sle66 emulating a MiFare Classic 4k.

ghost commented 7 years ago

I started to crack the keys one by one using crypto1. I am stuck on getting key A of sector 36 (block 192). I am able to crack the remaining sectors.

Starting 4 threads to test 210560831668 states using 128-way bitslicing 
Cracking...  99.88%
No solution found :(

EDIT: I finally found the A key of sector 36 by forcing crypto1 to enter brute forcing phase before it shrinks the leftover complexity significantly. I now have all the A keys and have started cracking the B keys.

ghost commented 7 years ago

I have succesfully dumped the A and B keys and have made a dump using MFOC. Thank you for your work!

BTW: The card is an OV-chipkaart used by the dutch public transport system.