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Author Rainbow table algorithm
Ian
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Registered: 28th Aug 99
Location: Liverpool
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28th Nov 11 at 22:02   View Garage View User's Profile U2U Member Reply With Quote
Got all that serial number data now.

6 integer digits of serial number which gives 4 digits of code.

Sample rows -

109526|4804
109527|9299
109528|7991
109529|8687
109530|1581
109531|0447
109532|7504
109533|3102
109534|3107
109535|0582

Just curiosity really because I can display the valid codes now but I was after deriving the algorithm that turns the serial number in to a code. It can only be arithmetic on the serial, there's no other information in the calculation, and I have all 1 million rows so it's easily tested.

Not much information out there.
Cole
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28th Nov 11 at 22:07   View User's Profile U2U Member Reply With Quote
that means diddly squat to me
Steve
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28th Nov 11 at 22:21   View Garage View User's Profile U2U Member Reply With Quote
couldnt find any pattern before
Ian
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28th Nov 11 at 22:26   View Garage View User's Profile U2U Member Reply With Quote
Probably won't see them just by looking, should be some research done on it, sure if you can crack MD5 which has no limit on input length and 32 char of hex on the output, two sets of ints with much less significance shouldn't cause too much of a problem.

Fun fun Nick
Steve
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28th Nov 11 at 22:28   View Garage View User's Profile U2U Member Reply With Quote
what does

109543
109544

give

[Edited on 28-11-2011 by Steve]
Ian
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28th Nov 11 at 22:41   View Garage View User's Profile U2U Member Reply With Quote
109543|6136
109544|3168
Sam
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28th Nov 11 at 22:45   View User's Profile U2U Member Reply With Quote
I assume you two are going on about Ford radio codes?
Ian
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28th Nov 11 at 22:45   View Garage View User's Profile U2U Member Reply With Quote
Think the solutions are to do with the collisions, ie. when ever a 4 digit code is repeated.

When they're imported I'll do a group query and get the lists of serials that collide.
Ian
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28th Nov 11 at 22:48   View Garage View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Sam
I assume you two are going on about Ford radio codes?
Yes mate although if we crack this I'll get other stuff as well.
Steve
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28th Nov 11 at 22:52   View Garage View User's Profile U2U Member Reply With Quote
whats 109554

sorry dont have mine to hand
Sam
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28th Nov 11 at 22:53   View User's Profile U2U Member Reply With Quote
Nah was just wondering as I saw something in PL about you doing something like this for the Puma forum.

I've got a 6000 or whatever it's called head unit in the Cougar, if I ever lose the radio code I'll know who to send a U2U to!
Ian
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28th Nov 11 at 23:00   View Garage View User's Profile U2U Member Reply With Quote
109554|3462
Ian
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28th Nov 11 at 23:00   View Garage View User's Profile U2U Member Reply With Quote
You won't need to Sam it'll be a web app on that site.
Sam
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28th Nov 11 at 23:04   View User's Profile U2U Member Reply With Quote
Ahh right!

BTW I was bored and did a Google on this subject, does this help/mean anything to you?

http://www.etlweb.com/prod_decodtool_fordunlock/files/fchelp.pdf
Ian
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28th Nov 11 at 23:06   View Garage View User's Profile U2U Member Reply With Quote
That's the Ford tool to do it but no clue as to how to calculate the numbers.
Ian
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1st Dec 11 at 03:14   View Garage View User's Profile U2U Member Reply With Quote
Current data set isn't particularly reliable because there's no check on the code when it's pasted.

Algorithm would be nice
Ian
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6th Dec 11 at 05:29   View Garage View User's Profile U2U Member Reply With Quote
1 million rows, not spotted any errors yet.

Codes aren't really uniformly utilised and there are 160 codes not even employed, must be a clue in there.

http://www.pumapeople.com/collisions.txt

http://www.pumapeople.com/collisions_popular.txt

[Edited on 06-12-2011 by Ian]
Steve
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6th Dec 11 at 05:43   View Garage View User's Profile U2U Member Reply With Quote
3769 and 4769 both produce loads of duplications
Ian
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6th Dec 11 at 06:08   View Garage View User's Profile U2U Member Reply With Quote
The second link is ordered by frequency.
scottyp1989
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6th Dec 11 at 14:16   View User's Profile U2U Member Reply With Quote
you can download a program to get all ford codes for free, cant you just integrate that into it somehow?
Ian
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6th Dec 11 at 15:26   View Garage View User's Profile U2U Member Reply With Quote
I've got all the codes using that program, just wanted to see if it was possible to get the algorithm somehow.

Not massively important because the app it up and live now but I was still curious.
Steve
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6th Dec 11 at 15:31   View Garage View User's Profile U2U Member Reply With Quote
i reckon there must a private/public key some sort of hash translation

i managed to glean some sort of public key from one of the decompiler problems

 
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