Included old source of version 1.3.3 and demo on re-crypting
diff --git a/recrypt.py b/recrypt.py
new file mode 100755
index 0000000..4bb134a
--- /dev/null
+++ b/recrypt.py
@@ -0,0 +1,32 @@
+#!/usr/bin/env python
+
+'''Re-encryption demonstration
+
+This little program shows how to re-encrypt crypto from versions older than 2.0.
+Those versions were inherently insecure, and version 2.0 solves those
+insecurities. This did result in a different crypto format, so it's not backward
+compatible. Use this program as a demonstration on how to re-encrypt your
+files/passwords/whatevers into the new format.
+'''
+
+import sys
+import rsa
+from rsa import _version133 as insecure
+
+(pub, priv) = rsa.newkeys(64)
+
+# Construct the encrypted content. You'd typically read an encrypted file or
+# stream here.
+cleartext = 'Give me more cowbell'
+old_crypto = insecure.encrypt(cleartext, pub)
+print 'Old crypto:', old_crypto
+print
+
+# Decrypt and re-encrypt the contents to make it compatible with the new RSA
+# module.
+decrypted = insecure.decrypt(old_crypto, priv)
+new_crypto = rsa.encrypt(decrypted, pub)
+
+print 'New crypto:', new_crypto
+print
+