OSSL_DRBG_PARAM_RESEED_TIME
p = OSSL_PARAM_locate(params, OSSL_DRBG_PARAM_RESEED_TIME);
OSSL_PARAM_time_t(OSSL_DRBG_PARAM_RESEED_TIME, NULL), \
*params = OSSL_PARAM_construct_time_t(OSSL_DRBG_PARAM_RESEED_TIME, &t);