From what I have read in this forum, the purpose of the crypto chip is to prevent other vendors from making V2 cameras that will work with the RPi. If that is the purpose, then, naturally, if you remove it, you can expect that the camera will cease to work. Otherwise, it would not be a very effective block-out mechanism, as another vendor could simply copy the design, minus the crypto chip, and sell that. That said, one might infer that the mechanism that is being employed is one where the RPi, at time of camera usage, queries the crypto chip, first, to determine if the chip is one that is authorized by RPT (given that anyone can buy the chip on the open-market), before interacting with the IMX219. Given that chips, themselves, are commodities, and the crypto chip, in this case, is being sold by Atmel, one realizes that authorize implies that the chip was somehow touched at time of camera-module manufacture, and touched means written.titusece wrote:I removed that chip from my board and now the camera board is stopped working.
ATSHA204A is reported by a number of sources though I have no idea of the veracity of such claims.
We are not intending to increase the number of manufacturers of the camera board, so no, you cannot apply to be a licencee.mjkirk12 wrote: ↑Tue Oct 31, 2017 1:59 pmWhat Atmel chip is used for this encryption? AT88SCxxyy ?
Can any company apply to be a Pi foundation licensee, pay the Pi Foundation royalties and manufacture the Pi 2.1 camera with the IMX219 and Atmel encryption chip?
Or is this restricted to a limited set of manufacturers of the Pi v2.1 camera module?
Hi jamesh,jamesh wrote: ↑Tue Oct 31, 2017 4:45 pmAlthough you could buy the Atmel crypto chip, pre-programmed (because these chips are preprogrammed with the keys specifically for each customer), and build it in to your own 219 based modules. However, that would not be cost effective - i.e. the result would cost more than buying the camera board, so you are unlikely to sell any.
The crypto chip is on there to preserve the Foundations income. We designed it, we built it, we did all the tuning, and we need to make money from our products.
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