From 6e5e9c8e969207e68665f12665a54768090897e4 Mon Sep 17 00:00:00 2001
From: Narayan Desai <desai@mcs.anl.gov>
Date: Mon, 12 Mar 2007 16:22:51 +0000
Subject: Merged in certs branch in preparation for 0.9.3pre2

git-svn-id: https://svn.mcs.anl.gov/repos/bcfg/trunk/bcfg2@2928 ce84e21b-d406-0410-9b95-82705330c041
---
 src/lib/tlslite/SharedKeyDB.py | 58 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 58 insertions(+)
 create mode 100755 src/lib/tlslite/SharedKeyDB.py

(limited to 'src/lib/tlslite/SharedKeyDB.py')

diff --git a/src/lib/tlslite/SharedKeyDB.py b/src/lib/tlslite/SharedKeyDB.py
new file mode 100755
index 000000000..3246ec7f1
--- /dev/null
+++ b/src/lib/tlslite/SharedKeyDB.py
@@ -0,0 +1,58 @@
+"""Class for storing shared keys."""
+
+from utils.cryptomath import *
+from utils.compat import *
+from mathtls import *
+from Session import Session
+from BaseDB import BaseDB
+
+class SharedKeyDB(BaseDB):
+    """This class represent an in-memory or on-disk database of shared
+    keys.
+
+    A SharedKeyDB can be passed to a server handshake function to
+    authenticate a client based on one of the shared keys.
+
+    This class is thread-safe.
+    """
+
+    def __init__(self, filename=None):
+        """Create a new SharedKeyDB.
+
+        @type filename: str
+        @param filename: Filename for an on-disk database, or None for
+        an in-memory database.  If the filename already exists, follow
+        this with a call to open().  To create a new on-disk database,
+        follow this with a call to create().
+        """
+        BaseDB.__init__(self, filename, "shared key")
+
+    def _getItem(self, username, valueStr):
+        session = Session()
+        session._createSharedKey(username, valueStr)
+        return session
+
+    def __setitem__(self, username, sharedKey):
+        """Add a shared key to the database.
+
+        @type username: str
+        @param username: The username to associate the shared key with.
+        Must be less than or equal to 16 characters in length, and must
+        not already be in the database.
+
+        @type sharedKey: str
+        @param sharedKey: The shared key to add.  Must be less than 48
+        characters in length.
+        """
+        BaseDB.__setitem__(self, username, sharedKey)
+
+    def _setItem(self, username, value):
+        if len(username)>16:
+            raise ValueError("username too long")
+        if len(value)>=48:
+            raise ValueError("shared key too long")
+        return value
+
+    def _checkItem(self, value, username, param):
+        newSession = self._getItem(username, param)
+        return value.masterSecret == newSession.masterSecret
\ No newline at end of file
-- 
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