ossl_param_get1_concat_octet_string
int ossl_param_get1_concat_octet_string(const OSSL_PARAM *params, const char *name,
if (ossl_param_get1_concat_octet_string(params, OSSL_KDF_PARAM_INFO,
if (ossl_param_get1_concat_octet_string(params, OSSL_KDF_PARAM_INFO,
if (ossl_param_get1_concat_octet_string(params, OSSL_KDF_PARAM_INFO,