Acquire Entropy for embedded platform

Chitrang Srivastava chitrang.srivastava at
Fri Aug 16 09:26:42 UTC 2019


I am working on an embedded platform and now ported openssl 1.1.1b
TLS 1.2/1.3 is working fine.
While analysing random number , Rand pool initialization calls where I am
returning like this ,
size_t *rand_pool_acquire_entropy*(RAND_POOL *pool)
        return rand_pool_entropy_available(pool);
As noticed that *rand_unix.c* has an implementation wcih samples 2 bits of
RTC, would that give enough entropy or any other recommendation to have
enough entropy for embedded platforms?

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