fixed a problem with CRYPT password length

VERSION

@@ -1 +1 @@
-Version 2.6.2-stable+timestamp.2013.09.15.09.39.16
+Version 2.6.2-stable+timestamp.2013.09.15.11.45.56

gluon/validators.py

@@ -2899,13 +2899,15 @@ class CRYPT(object):
         The actual hash algorithm is determined from the key which is
         generated by web2py in tools.py. This defaults to hmac+sha512.
         """
-        self.key = key and key[:max_length]
+        self.key = key
         self.digest_alg = digest_alg
         self.min_length = min_length
+        self.max_length = max_length
         self.error_message = error_message
         self.salt = salt
 
     def __call__(self, value):
+        value = value and value[:self.max_length]
         if len(value) < self.min_length:
             return ('', translate(self.error_message))
         return (LazyCrypt(self, value), None)