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The device is Octeon by Cavium which contains a RNG hardware unit. OS show Current entropy pool size is 4096 bytes but entropy_avail is very low.The device crypto modules has ansi_cprng.ko present only, no other RNG related .ko present, additionally as per lsmod no RNG related modules loaded. However, the kernel config settings related to RNG are as following; CONFIG_CRYPTO_ANSI_CPRNG=m CONFIG_CRYPTO_HW=y CONFIG_CRYPTO_RNG=m CONFIG_CRYPTO_RNG2=y

How to feed /dev/random from Octeon RNG and increase entropy_avail, please?

Thank you!

Glorfindel
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neutrino
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1 Answers1

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You need to load the cavium_rng module (enabled with CONFIG_HW_RANDOM_CAVIUM).

However, this is off-topic.

This is a question about Linux, not about cryptography, so the Unix StackExchange website would have been a better fit for it.

Frank Denis
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