Bigcheese

Roles: (They are all standard names for this kind of thing but why not)

Alice (The end user / the minecraft client software)
Bob (The Minecraft Server the user wants to connect to)
Trent (The Minecraft.net Server)
Eve (The hacker who is trying to impersonate Alice and connect to Bob)

Before anything happens, Alice generates an RSA Keypair and both Alice and Bob get a verified copy of Trent's public key wrapped in a certificate with full chain of trust signatures resolved which is also fully valid for login.minecraft.net.
Alice's public key will be known as APK.

Bigcheese

#!/bin/sh
#
# git-svn-diff
# Generate an SVN-compatible diff against the tip of the tracking branch
TRACKING_BRANCH=`git config --get svn-remote.svn.fetch | sed -e 's/.*:refs\/remotes\///'`
REV=`git svn find-rev $(git rev-list --date-order --max-count=1 $TRACKING_BRANCH)`
git diff --no-prefix $(git rev-list --date-order --max-count=1 $TRACKING_BRANCH) $* |
sed -e "s/^+++ .*/& (working copy)/" -e "s/^--- .*/&  (revision $REV)/" \
    -e "s/^diff --git [^[:space:]]*/Index:/" \
    -e "s/^index.*/===================================================================/" \