This is how 40D (and 400D) code decrypth the flasher code 1(2) - page 2 - DSLR Hack development - CHDK Forum

This is how 40D (and 400D) code decrypth the flasher code 1(2)

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Re: This is how 40D (and 400D) code decrypth the flasher code 1(2)
« Reply #10 on: 04 / June / 2010, 17:25:38 »
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emklap:
Congrats for the reversing!
Just one note:
The whole hocus-pocus with the constant FF803FE1 means a simple remainder calculation
Offset_Key1 := InitValue mod 512
Offset_Key2 := InitValue mod 513

(I know that is an old post...)
« Last Edit: 06 / June / 2010, 09:07:22 by Pelican »

Re: This is how 40D (and 400D) code decrypth the flasher code 1(2)
« Reply #11 on: 05 / June / 2010, 09:06:56 »
look for Tyra Misoux and Dmit posts in this forum for clues on payload encryption...

 

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