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VAG 2006+ VDO 93C86 DECRYPTOR 
Assembler sources, size of compiled code is less than 3kb. VAG VDO 2006+ Decryptor is a decryption tool for 93C86 eeprom dump from dashboard of new VAG models made after middle of 2006, such as:
It uses hardcoded xor keys and address masks because at the moment all dumps are crypted using default secret keys. I see no problems to add auto-detection of xor keys and address mask by using simple analysis of eeprom data if VAG will change secret keys to random. 
AUDI VDO 93C86 DECRYPTOR LIBRARY 
Assembler sources, size of compiled code is 3kb. Audi VDO Decryptor is library for decrypting of 93C86 eeprom dump file from dashboard of new Audi models made after middle of 2001. Library is works fully automatic - all xor keys and address mask are calculating using mathematical analysis of crypted dump. You don't need to enter an additional data or use second file with zero mileage value. Just compile library as static or dynamic and use in your project like "invoke VDODecrypt,addr FileBuffer", where FileBuffer is a pointer to crypted dump. That's all, you will get a decrypted file in a second. As well possibly to change any values in eeprom dump and crypt it back for future programming in to Dash. |