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BMW CIC PATCHER v2 - GENERATE YOUR OWN RETROFIT FSC CERTS
06-04-2017, 14:55 PM,
Post: #20
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RE: FREE BMW CIC FSC RETROFIT CERTIFICATES
Making NBT accept a custom set of FSCs is trivial - just patch in the new root certificate and voila. But I agree, X86 makes it a little easier.
And yes, for a complete solution, understanding what the classic FSC extension data is used for and generating genuine data is an interesting intellectual challenge - if only I didn't need to sleep!! As the extension data appears to be ignored by the HU, and @aknight720 says it is RSA encrypted, maybe the data is signed by the sig cert - which I have not found a use for previously. I'm not sure how @aknight720 has decrypted the data - presumably the private key is in the HU binary?? That would mean the sig cert is not used (unless the private key for that is in the binary, which I doubt). Of course the sig cert public key can be used to verify the extention data has not been tampered with but then the MD5 hash inside isn't a great deal of use! I'm sure it will all become clear. Email: [email protected] Skype: [email protected]
HU Engineering Tool MGU Engineering Tool - now with field update mode via Feature Installer. Coding 2.0 |
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