bcrypt padding work:

* added changelog entry re: issue & fix
* bcrypt now warns about padding bits in digest as well
* bcrypt.normhash() now normalizes salt padding bits, digest padding bits, and rounds zero-padding
* hash_needs_update() will now flag unclean bcrypt hashes as needing an update
* UTs for hash_needs_update(), and digest padding bit handling

1 files changed, 5 insertions, 0 deletions

diff --git a/passlib/context.py b/passlib/context.py
index 46bcec3..f27e6c0 100644
--- a/passlib/context.py
+++ b/passlib/context.py
@@ -954,6 +954,11 @@ class CryptContext(object):
 
         #XXX: could check if handler provides it's own helper, eg getattr(handler, "hash_needs_update", None),
         #and call that instead of the following default behavior
+        if hasattr(handler, "_hash_needs_update"):
+            #NOTE: hacking this in for the sake of bcrypt & issue 25,
+            #      will formalize (and possibly change) interface later.
+            if handler._hash_needs_update(hash, **opts):
+                return True
 
         if opts:
             #check if we can parse hash to check it's rounds parameter