Added support for PKCS#8-encrypted private keys.

The patch contains the following changes:

- Private RSA keys can be imported/exported in encrypted form,
  protected according to PKCS#8 and:

  * PBKDF2WithHMAC-SHA1AndDES-EDE3-CBC.
  * PBKDF2WithHMAC-SHA1AndAES128-CBC
  * PBKDF2WithHMAC-SHA1AndAES192-CBC
  * PBKDF2WithHMAC-SHA1AndAES256-CBC

  In addition to that, it is possible to import keys i the
  following weak formats:

  * pbeWithMD5AndDES-CBC
  * pbeWithSHA1AndRC2-CBC
  * pbeWithMD5AndRC2-CBC
  * pbeWithSHA1AndDES-CBC

- The following new module (and 1 new package) are added:

  * Crypto.Util.Padding for simple padding/unpadding logic
  * Crypto.IO._PBES for PBE-related PKCS#5 logic
  * Crypto.IO.PEM for PEM wrapping/unwrapping
  * Crypto.IO.PKCS8 for PKCS#8 wrapping/unwrapping

- All Object ID (OIDs) are now in dotted form to increase
  readability.

- Add AES support to PEM format (decode only).
  The PEM module can decrypt messages protected with AES-CBC.

- Update RSA import test cases.

- Updated to PKCS8 test cases

1 files changed, 17 insertions, 0 deletions

diff --git a/lib/Crypto/Util/py21compat.py b/lib/Crypto/Util/py21compat.py
index 624408b..658fd36 100644
--- a/lib/Crypto/Util/py21compat.py
+++ b/lib/Crypto/Util/py21compat.py
@@ -81,4 +81,21 @@ except TypeError:
                     return True
             return False
 
+#
+# Python 2.2 introduces the built-in staticmethod(). Python 2.4 turns
+# it into a function decorator (@staticmethod).
+#
+# The following recipe for achieving the same thing in Python 2.1 comes
+# from the Python Cookbok ("Implementanting Static Methods").
+#
+try:
+    class A:
+        def a(): pass
+        a = staticmethod(a)
+except NameError:
+    class staticmethod:
+        def __init__(self, anycallable):
+            self.__call__ = anycallable
+    __all__ += ['staticmethod']
+
 # vim:set ts=4 sw=4 sts=4 expandtab: