[Zope-Checkins] CVS: Zope/lib/python/AccessControl - AuthEncoding.py:1.8

[Chris Withers]

Update of /cvs-repository/Zope/lib/python/AccessControl
In directory cvs.zope.org:/tmp/cvs-serv26719/lib/python/AccessControl

Modified Files:
	AuthEncoding.py 
Log Message:
Collector #435: Support for passwords encoded using MySQL's 
       PASSWORD() function add to lib/python/AccessControl/AuthEncoding.py.

=== Zope/lib/python/AccessControl/AuthEncoding.py 1.7 => 1.8 ===
--- Zope/lib/python/AccessControl/AuthEncoding.py:1.7	Wed Aug 14 17:29:07 2002
+++ Zope/lib/python/AccessControl/AuthEncoding.py	Mon Jan  6 10:05:23 2003
@@ -121,6 +121,29 @@
     registerScheme('CRYPT', CryptDigestScheme())
 
 
+class MySQLDigestScheme:
+
+    def encrypt(self, pw):
+        nr = 1345345333L
+        add = 7
+        nr2 = 0x12345671L
+        for i in pw:
+            if i == ' ' or i == '\t':
+                continue
+            nr ^= (((nr & 63) add) * ord(i)) + (nr << 8)
+            nr2 += (nr2 << 8) ^ nr
+            add += ord(i)
+        r0 = nr & ((1L << 31) - 1L)
+        r1 = nr2 & ((1L << 31) - 1L)
+        return "%08lx%08lx" % (r0, r1)
+
+    def validate(self, reference, attempt):
+        a = self.encrypt(attempt)
+        return (a == reference)
+
+registerScheme('MYSQL', MySQLDigestScheme())
+
+
 def pw_validate(reference, attempt):
     """Validate the provided password string, which uses LDAP-style encoding
     notation.  Reference is the correct password, attempt is clear text