256     EVP_RAND_CTX *test = NULL, *drbg = NULL;  in self_test_drbg()  local
283     drbg = EVP_RAND_CTX_new(rand, test);  in self_test_drbg()
285     if (drbg == NULL)  in self_test_drbg()
288     strength = EVP_RAND_get_strength(drbg);  in self_test_drbg()
295     if (!EVP_RAND_CTX_set_params(drbg, drbg_params))  in self_test_drbg()
307     if (!EVP_RAND_instantiate(drbg, strength, 0, t->persstr, t->persstrlen,  in self_test_drbg()
318     if (!EVP_RAND_generate(drbg, out, t->expectedlen, strength,  in self_test_drbg()
334     if (!EVP_RAND_generate(drbg, out, t->expectedlen, strength,  in self_test_drbg()
344     if (!EVP_RAND_uninstantiate(drbg))  in self_test_drbg()
350     if (!EVP_RAND_verify_zeroization(drbg))  in self_test_drbg()
355     EVP_RAND_CTX_free(drbg);  in self_test_drbg()