Re: OT: how to securely produce a large data file for "one time tape" encryption input
- Posted by fizzpopsoft Aug 21, 2015
- 1745 views
If you have physical access to the chip then yes its internal program copy protection can be circumvented. Thats not the concern here.
I don't care if my XOR program on the PIC is public, only if the PIC device has been factory shipped with a back door to access data that my application did not intend. This PIC chip has no network capability, so either its shipped with a backdoor that could transfer 4Gb of data through some unknown interface that has the appropriate unknown receiver without me noticing, or its secure for my purpose.
I'll go for the latter. Of course, I assume no-one has physical access to the USB stick containing the 4GB random data either.
