RAND_Bytes() failed with RAND_R_ERROR_INSTANTIATING_DRBG

[Dr Paul Dale]

My guess would be /dev/random is waiting to be seeded.  3.0 waits for 
the operating system to have decent entropy.  1.1.1 will run without 
(which is rather bad).

You might be able to run one of the entropy gathering daemons.  CPU 
Jitter is my usual recommendation but there are others.


Paul Dale


On 18/4/23 05:11, Manish Patel via openssl-users wrote:
> Hi,
>
>    I am trying to upgrade openssl-1.1.1c with openssl-3.0.8.
> We have an existing code that calls RAND_Bytes() which
> now fails with above error code: [error:1200006C:lib(36)::reason(108)]
>
> Tracing
> RAND_bytes_ex()
> seed_src_generate()
> ossl_pool_acquire_entropy() <- this returns no entropy.
>
> The pool->len is always zero.
> I do not see ossl_rand_pool_add() or ossl_rand_pool_add_begin()
> ever called.
>
> What am I missing? Looks like the random code in openssl has changed
> significantly but can not figure out what do I need to do for the
> entropy pool
> to kick start.
>
> Any help is appreciated.
>
> Thank you
> Manish.
>
>
>