From 7bd95eb0d0f126087b3ae59654b2154d82476045 Mon Sep 17 00:00:00 2001
From: Robey Pointer <robey@twitter.com>
Date: Tue, 14 Apr 2009 18:15:57 -0700
Subject: patch from james bardin: bail early if the high byte is zero.

---
 paramiko/message.py | 2 +-
 paramiko/util.py    | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/paramiko/message.py b/paramiko/message.py
index 1a5151ce..bcdfdba4 100644
--- a/paramiko/message.py
+++ b/paramiko/message.py
@@ -111,7 +111,7 @@ class Message (object):
         """
         b = self.packet.read(n)
         if len(b) < n:
-            return '\x00'*n
+            return b + '\x00' * (n - len(b))
         return b
 
     def get_byte(self):
diff --git a/paramiko/util.py b/paramiko/util.py
index 8abdc0ce..e5ab0769 100644
--- a/paramiko/util.py
+++ b/paramiko/util.py
@@ -135,6 +135,8 @@ def safe_string(s):
 def bit_length(n):
     norm = deflate_long(n, 0)
     hbyte = ord(norm[0])
+    if hbyte == 0:
+        return 1
     bitlen = len(norm) * 8
     while not (hbyte & 0x80):
         hbyte <<= 1
-- 
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