X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~mdw/git/tripe/blobdiff_plain/165db1a8d131ee6f8244ca392c7ae2074b030774..452bf3f6897b8c6a22b51e1ef228da39136d51a7:/tripe-protocol.h?ds=inline

diff --git a/tripe-protocol.h b/tripe-protocol.h
index bce8f1dc..bfa97487 100644
--- a/tripe-protocol.h
+++ b/tripe-protocol.h
@@ -1,6 +1,6 @@
 /* -*-c-*-
  *
- * $Id: tripe-protocol.h,v 1.1 2003/10/15 09:30:18 mdw Exp $
+ * $Id$
  *
  * Protocol definition for TrIPE
  *
@@ -26,14 +26,6 @@
  * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  */
 
-/*----- Revision history --------------------------------------------------* 
- *
- * $Log: tripe-protocol.h,v $
- * Revision 1.1  2003/10/15 09:30:18  mdw
- * Add support for Ethereal protocol analysis.
- *
- */
-
 #ifndef TRIPE_PROTOCOL_H
 #define TRIPE_PROTOCOL_H
 
@@ -76,13 +68,24 @@
 #define KX_SWITCHOK 5u
 #define KX_NMSG 6u
 
+/* --- Miscellaneous packets --- */
+
+#define MSG_MISC 0x20
+
+#define MISC_NOP 0u			/* Do nothing; ignore me */
+#define MISC_PING 1u			/* Transport-level ping */
+#define MISC_PONG 2u			/* Transport-level ping response */
+#define MISC_EPING 3u			/* Encrypted ping */
+#define MISC_EPONG 4u			/* Encrypted ping response */
+#define MISC_GREET 5u			/* A greeting from a NATed peer */
+
 /* --- Symmetric encryption and keysets --- *
  *
  * Packets consist of an 80-bit MAC, a 32-bit sequence number, and the
  * encrypted payload.
  *
  * The plaintext is encrypted using Blowfish in CBC mode with ciphertext
- * stealing (as described in [Schneier].  The initialization vector is
+ * stealing (as described in [Schneier]).  The initialization vector is
  * selected randomly, and prepended to the actual ciphertext.
  *
  * The MAC is computed using the HMAC construction with RIPEMD160 over the