This is what I had.
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- 22 Apr 2022, 07:24
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- 22 Apr 2022, 13:08
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- 25 Apr 2022, 08:31
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Re: Vida CEM swapping
Looking at your code... I know what 'n' is but where did 'm' come from? Also what is 'k'? n = 0xc541a9, m = 0x1212050 I took my time, disassembled one of P3 dumps, found the routine and actually understood what the hash is doing. And rewrote it in a clean, understandable C. The source code that is ...
- 25 Apr 2022, 21:08
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Re: Vida CEM swapping
The 'struct foo' and your 'if' statement have me a little stumped. Does 'n ^=m' take place for all 64 bits or only if the 'if' statement is 1? 'n' xor 'm' for all bits of 'n' if conditional statement is 1. I'm still trying to figure out where 'm' came from also. This is 0x109028 from your (internet...
- 25 Apr 2022, 21:32
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Re: Vida CEM swapping
P3 owners: Would you prefer a lower maximum crack time (10.5 hours ) or a chance of finding the PIN real fast? With the chance finding the PIN real fast comes the risk that it will take real long time ( 63 hours ). One does not follow from another. From the hash properties, iterating over 3 bytes i...
- 25 Apr 2022, 21:54
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Re: Vida CEM swapping
Those interested: check out the P3 branch, it got a fix for "ugh", and cracking in HEX as well.
I don't have a slow P3 CEM, can't test how the new code works there.
1000 random seed/key crack simulation shows average cracking time of 2h 41m running at 866 pin/s.
I don't have a slow P3 CEM, can't test how the new code works there.
1000 random seed/key crack simulation shows average cracking time of 2h 41m running at 866 pin/s.
- 27 Apr 2022, 07:08
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Re: Vida CEM swapping
How do you get ~860 pin/sec? I am getting stable 440 pins/sec using VTL's the most recent build. There are "fast" and "slow" CEMs. You have a "slow" one. I could also not compile VTL's seed-gen.c utility. I was trying to compile with devc++ and with VScode as well. It ...
- 28 Apr 2022, 10:25
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Re: Vida CEM swapping
Best CEM protection is in brick shaped ones, from P2 -04. It is the dumbest code, which is resistant to timing attacks because of how dumb is it ;) Mine is a 2001. In a way I'm glad the security is resistant to a timing attack since there's less chance of an outside attack on it. However, with it b...
- 28 Apr 2022, 10:34
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Re: Vida CEM swapping
All Ford Volvos and up: https://en.wikipedia.org/wiki/Ford_EUCD_platform






