Make MODE_OPENPGP accept uppercase 'IV' parameter.

This is for consistency with the rest of PyCrypto.

Closes: https://bugs.launchpad.net/pycrypto/+bug/1132550

1 files changed, 8 insertions, 1 deletions

diff --git a/lib/Crypto/Cipher/blockalgo.py b/lib/Crypto/Cipher/blockalgo.py
index ba8cfdc..98e0e00 100644
--- a/lib/Crypto/Cipher/blockalgo.py
+++ b/lib/Crypto/Cipher/blockalgo.py
@@ -526,7 +526,14 @@ class BlockAlgo:
 
         self._done_first_block = False
         self._done_last_block = False
-        self.IV = _getParameter('iv', 1, args, kwargs)
+        self.IV = _getParameter('IV', 1, args, kwargs)
+        if self.IV is None:
+            # TODO: Decide whether 'IV' or 'iv' should be used going forward,
+            # and deprecate the other.  'IV' is consistent with the rest of
+            # PyCrypto, but 'iv' is more common in Python generally.  For now,
+            # we'll support both here.  When in doubt, use a positional
+            # parameter for now.
+            self.IV = _getParameter('iv', 1, args, kwargs)
         if not self.IV:
             raise ValueError("MODE_OPENPGP requires an IV")