search

OpenNuvoton / NUC970_Linux_Kernel

Linux Kernel Source Code for NUC970 Series Microprocessor
Other
68 stars 69 forks source link

How to turn on hardware random accelerator #56

Closed chenxy1988 closed 4 years ago

chenxy1988 commented 4 years ago

Hi Nuvoton team,

We met a problem that the entropy increased too slow to cause openssl (> 1.1.1d) read /dev/random successfully. I used "cat /proc/sys/kernel/random/entropy_avail" to observed the entropy is less than 100 when power on the board. I noticed that kernel has an option "CONFIG_HW_RANDOM_NUVOTON", but seems related TMP. Does this driver can do random accelerator without TMP?

Br, Xiangyu

yachen commented 4 years ago

Hi,

The option is for enable the built in hardware random number generator. It has nothing to do with TPM. Your system can get random number by reading /dev/hwrng.

Sincerely,

Yi-An Chen

chenxy1988 commented 4 years ago

Thanks. Closing this ticket.