DEVCRYPTO_REQUIRE_ACCELERATED
"specifies whether to use software (not accelerated) drivers (" OPENSSL_MSTR(DEVCRYPTO_REQUIRE_ACCELERATED) "=use only accelerated drivers, " OPENSSL_MSTR(DEVCRYPTO_USE_SOFTWARE) "=allow all drivers, " OPENSSL_MSTR(DEVCRYPTO_REJECT_SOFTWARE) "=use if acceleration can't be determined) [default=" OPENSSL_MSTR(DEVCRYPTO_DEFAULT_USE_SOFTDRIVERS) "]",
case DEVCRYPTO_REQUIRE_ACCELERATED: