IMX28 : use DCP engine to encrypt data using AES ?

g__ — Fri, 23 Oct 2020 14:06:00 GMT

I installed the DCP driver into buildroot.

Is it possible to use the DCP engine of the IMX28 to encrypt data ?

If yes, do you have a code example ?

Thanks

Best

Re: IMX28 : use DCP engine to encrypt data using AES ?

igorpadykov — Mon, 26 Oct 2020 09:22:12 GMT

Hi g__

one can look at below dcp example:

also one can consider cryptodev-linux/test:

Some customers tested on i.MX6ULL board, which has the same DCP module.

In Kernel Configuration, you need exclude below option (default <Y>):

Cryptographic API ---> Disable run-time self tests

The result is shown below when insert the tcrypt.ko module:

# insmod tcrypt.ko mode=10

insmod: ERROR: could not insert module tcrypt.ko: Resource temporarily unavailable

# cat /proc/interrupts

...

236: 72 GPC 46 Level dcp-vmi-irq
237: 2 GPC 47 Level dcp-irq

Best regards
igor