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Flashing a stock computer

vortecd

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#1
So our computers are locked so you can't do a tune unless you have an unlocked computer. How does a dealership "flash" your computer if it is locked? Why don't the tuners do the same thing?
 


jonx96

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The dealership has keys to the kingdom.
I think I’ve read in the past Chevy uses aes-256 encryption. I’m not sure what dodge uses but I’m going to assume the dealership has the keys built into their machine to decrypt the computer.
Just like my computer hard drive. I have it encrypted so if you pull it out you cannot access anything on it.
 


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#3
Encryption keys the dealers have allow that to work.
 


OP
vortecd

vortecd

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Thread Starter #4
Encryption keys the dealers have allow that to work.
So with anything computerized why haven't any been able to get the "keys"
 


jonx96

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#5
If dodge also uses aes 256. It is a very sophisticated encryption. I encrypt my traffic at work with aes 256. The Feds only requires aes 128 encryption with our CJIS compliance when I encrypt files. Aes 256 is the next step.
I’m guessing only a select few have access to actually see the keys. It’s prolly just built into the machine that has its own security to it.
 


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#6
The diagnostic system that has the de-encryption loaded into it is probably a $3,000-$5,000 piece of equipment. It's cheaper to just get an unlocked PCM than try to find a machine. When we talk about encryption keys, we're not talking about a physical CAC card or some such loaded into a handheld scanner. It's a software key usually held on a diagnostic terminal that they plug into your vehicle with a dongle. You can get the dongle for cheap, but without that expensive terminal the security software is loaded into, you're SOL.
 


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#7
So with anything computerized why haven't any been able to get the "keys"
Cost and the fact it's a rolling code system like newer garage doors. Easier to just remove the hardware from the ECM and cheaper too.
 




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