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2006-02-19 jrandom

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* Moved the current net's reseed URL to a different location than where
      the old net looks (dev.i2p.net/i2pdb2/ vs .../i2pdb/)
    * More aggressively expire inbound messages (on receive, not just on send)
    * Add in a hook for breaking backwards compatibility in the SSU wire
      protocol directly by including a version as part of the handshake.  The
      version is currently set to 0, however, so the wire protocol from this
      build is compatible with all earlier SSU implementations.
    * Increased the number of complete message readers, cutting down
      substantially on the delay processing inbound messages.
    * Delete the message history file on startup
    * Reworked the restart/shutdown display on the console (thanks bd_!)
This commit is contained in:
jrandom
2006-02-19 12:29:57 +00:00
committed by zzz
parent c94de2fbb5
commit 65975df1be
16 changed files with 211 additions and 91 deletions
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9
router/doc/udp.html
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@ -1,4 +1,4 @@
<code>$Id: udp.html,v 1.18.2.1 2006/02/15 00:16:29 jrandom Exp $</code>
<code>$Id: udp.html,v 1.19 2006/02/15 00:33:32 jrandom Exp $</code>
<h1>Secure Semireliable UDP (SSU)</h1>
<b>DRAFT</b>
@ -47,13 +47,18 @@ size payload encrypted with the appropriate key. The MAC used is
HMAC-MD5, truncated to 16 bytes, while the key is a full AES256
key. The specific construct of the MAC is the first 16 bytes from:</p>
<pre>
HMAC-MD5(payload || IV || payloadLength, macKey)
HMAC-MD5(payload || IV || (payloadLength ^ protocolVersion), macKey)
</pre>
<p>The payload itself is AES256/CBC encrypted with the IV and the
sessionKey, with replay prevention addressed within its body,
explained below. The payloadLength in the MAC is a 2 byte unsigned
integer in 2s complement.</p>
<p>The protocolVersion is a 2 byte unsigned integer in 2s complement,
and currently set to 0. Peers using a different protocol version will
not be able to communicate with this peer, though earlier versions not
using this flag are.</p>
<h2><a name="payload">Payload</a></h2>