Prior to OpenSSL 1.1.0, RAND_cleanup() released all resources used by
the PRNG. As of version 1.1.0, it does nothing and should not be called,
since no explicit initialisation or de-initialisation is necessary. See
Prior to OpenSSL 1.1.0, RAND_cleanup() released all resources used by
the PRNG. As of version 1.1.0, it does nothing and should not be called,
since no explicit initialisation or de-initialisation is necessary. See