[or-cvs] [tor/maint-0.2.1] Fix a couple of non-cleared key issues in hidden services

[nickm@xxxxxxxxxxxxxx]

commit ef6fa07e4830dde86fce2d06bf9da44d5c1c79b9
Author: Nick Mathewson <nickm@xxxxxxxxxxxxxx>
Date:   Sat Jan 15 11:32:56 2011 -0500

    Fix a couple of non-cleared key issues in hidden services
    
    we need to do more hunting, but this fixes the ones mentioned in 2385.
---
 changes/bug2384      |    3 ++-
 src/or/rendclient.c  |    2 ++
 src/or/rendservice.c |    2 ++
 3 files changed, 6 insertions(+), 1 deletions(-)

diff --git a/changes/bug2384 b/changes/bug2384
index 5321814..ded5eee 100644
--- a/changes/bug2384
+++ b/changes/bug2384
@@ -1,5 +1,6 @@
   o Minor bugfixes
     - Zero out a few more keys in memory before freeing them.  Fixes bug
-      2384.  Found by cypherpunks.  Bugfix on 0.0.2pre9.
+      2384 and part of bug 2385.  These key instances found by
+      "cypherpunks".  Bugfix on 0.0.2pre9.
 
 
diff --git a/src/or/rendclient.c b/src/or/rendclient.c
index ab18d35..9587546 100644
--- a/src/or/rendclient.c
+++ b/src/or/rendclient.c
@@ -717,8 +717,10 @@ rend_client_receive_rendezvous(origin_circuit_t *circ, const uint8_t *request,
    * attach only the connections that are waiting on this circuit, rather
    * than trying to attach them all. See comments bug 743. */
   connection_ap_attach_pending();
+  memset(keys, 0, sizeof(keys));
   return 0;
  err:
+  memset(keys, 0, sizeof(keys));
   circuit_mark_for_close(TO_CIRCUIT(circ), END_CIRC_REASON_TORPROTOCOL);
   return -1;
 }
diff --git a/src/or/rendservice.c b/src/or/rendservice.c
index 07f01ae..a650eda 100644
--- a/src/or/rendservice.c
+++ b/src/or/rendservice.c
@@ -1214,8 +1214,10 @@ rend_service_introduce(origin_circuit_t *circuit, const uint8_t *request,
   memcpy(cpath->handshake_digest, keys, DIGEST_LEN);
   if (extend_info) extend_info_free(extend_info);
 
+  memset(keys, 0, sizeof(keys));
   return 0;
  err:
+  memset(keys, 0, sizeof(keys));
   if (dh) crypto_dh_free(dh);
   if (launched)
     circuit_mark_for_close(TO_CIRCUIT(launched), reason);