sergei56
02-04-2003, 08:39
I do not understand, brute force a dangerous or safe method for search KI?
SirGraham
02-04-2003, 09:57
Hi sergei56,
The brute force is a safe method for search KI. but is more.... more... slowly...... :(
The problem with you search the ki is that some cards have a limit in the number maximous of authentications.
Normaly, The sim makes one autentication every 2 Days (this ratio can be changed. Depends of the factors).
If you put a limit in the card (more less 65536), the life of the card is more of 2 years...
... But if you search the Ki, the colission method makes into SIM about 150.000 authentifications (to search all Ki).
More programs SIM_SCAN, XSim mixed the two method to search the Ki, part with the collision method and part with the Brute force...
However, the brute force only is operative in the last 4 bytes of Ki 2^32. More of 4 bytes, There is a lot of combinations to solve in a operative time...
Best Regards,
Sir Graham.