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diff --git a/lib/Python/Lib/Crypto/SelfTest/Protocol/test_chaffing.py b/lib/Python/Lib/Crypto/SelfTest/Protocol/test_chaffing.py
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+#
+# Test script for Crypto.Protocol.Chaffing
+#
+# Part of the Python Cryptography Toolkit
+#
+# Written by Andrew Kuchling and others
+#
+# ===================================================================
+# The contents of this file are dedicated to the public domain.  To
+# the extent that dedication to the public domain is not available,
+# everyone is granted a worldwide, perpetual, royalty-free,
+# non-exclusive license to exercise all rights associated with the
+# contents of this file for any purpose whatsoever.
+# No rights are reserved.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+# ===================================================================
+
+__revision__ = "$Id$"
+
+import unittest
+from Crypto.Protocol import Chaffing
+
+text = """\
+When in the Course of human events, it becomes necessary for one people to
+dissolve the political bands which have connected them with another, and to
+assume among the powers of the earth, the separate and equal station to which
+the Laws of Nature and of Nature's God entitle them, a decent respect to the
+opinions of mankind requires that they should declare the causes which impel
+them to the separation.
+
+We hold these truths to be self-evident, that all men are created equal, that
+they are endowed by their Creator with certain unalienable Rights, that among
+these are Life, Liberty, and the pursuit of Happiness. That to secure these
+rights, Governments are instituted among Men, deriving their just powers from
+the consent of the governed. That whenever any Form of Government becomes
+destructive of these ends, it is the Right of the People to alter or to
+abolish it, and to institute new Government, laying its foundation on such
+principles and organizing its powers in such form, as to them shall seem most
+likely to effect their Safety and Happiness.
+"""
+
+class ChaffingTest (unittest.TestCase):
+
+    def runTest(self):
+        "Simple tests of chaffing and winnowing"
+	# Test constructors
+        Chaffing.Chaff()
+        Chaffing.Chaff(0.5, 1)
+        self.assertRaises(ValueError, Chaffing.Chaff, factor=-1)
+        self.assertRaises(ValueError, Chaffing.Chaff, blocksper=-1)
+
+        data = [(1, 'data1', 'data1'), (2, 'data2', 'data2')]
+        c = Chaffing.Chaff(1.0, 1)
+        c.chaff(data)
+        chaff = c.chaff(data)
+        self.assertEqual(len(chaff), 4)
+
+        c = Chaffing.Chaff(0.0, 1)
+        chaff = c.chaff(data)
+        self.assertEqual(len(chaff), 2)
+
+def get_tests(config={}):
+    return [ChaffingTest()]
+
+if __name__ == "__main__":
+    unittest.main()