I want to improve entropy by using the output of TRNG i.e. hardware generated entropy. I have pointed the "rng_current" to "rng-caam". I am running "rngd" with r option i.e. "rngd -r /dev/hwrng". Trace program i.e. "strace rngd -r /dev/hwrng" confirms that it is reading/getting 8 bytes.
However, I want to confirm that whether I am getting entropy output from SEC 4.2 RNG (which is available across RNG Test Output FIFO register) or output is coming from SEC 4.2 TRNG (which is available across XKEY register) ?
Any help/reply is appreciated please.
Thanks & Regards,