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CREATE_FAST is for when you don't know the onion key

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it isn't (anymore) for when you think you can get away with saving some
crypto operations.
This commit is contained in:
Roger Dingledine 2017-07-03 17:16:26 -04:00
parent 69fba1f2cd
commit 943d284752
1 changed files with 2 additions and 6 deletions
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8
src/or/circuitbuild.c
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@ -981,15 +981,11 @@ circuit_send_first_onion_skin(origin_circuit_t *circ)
node = node_get_by_id(circ->base_.n_chan->identity_digest);
fast = should_use_create_fast_for_circuit(circ);
if (!fast) {
/* We are an OR and we know the right onion key: we should
* send a create cell.
*/
/* We know the right onion key: we should send a create cell. */
circuit_pick_create_handshake(&cc.cell_type, &cc.handshake_type,
circ->cpath->extend_info);
} else {
/* We are not an OR, and we're building the first hop of a circuit to a
* new OR: we can be speedy and use CREATE_FAST to save an RSA operation
* and a DH operation. */
/* We don't know an onion key, so we need to fall back to CREATE_FAST. */
cc.cell_type = CELL_CREATE_FAST;
cc.handshake_type = ONION_HANDSHAKE_TYPE_FAST;
}