Thomas Dybdahl Ahle <[EMAIL PROTECTED]> writes:
> byte[] array2 = bytes1.CryptDeriveKey("DES", "MD5", 0, array1);
> > Anybody know how to do this in python?I'm not aware of a standard that says how CryptDeriveKey is supposed to work. Or rather, there are multiple possible standard ways to do it. If you can find an exact specification, or C# source code that does it, it will probably be straightforward to reimplement in Python. If you want to just do something generic and don't need to interoperate with a C# application that uses CryptDeriveKey, the following should be ok: import hmac password = 'the big sekrit password goes here' key1 = hmac.HMAC(password, '1').digest()[:8] # get 8 bytes And if you need additional keys, such as for triple DES: key2 = hmac.HMAC(password, '2').digest()[:8] # get 8 bytes key3 = hmac.HMAC(password, '3').digest()[:8] # get 8 bytes If you want to be fancier you could try PKCS5 KDF2: http://www.rsasecurity.com/rsalabs/node.asp?id=2127 CryptDeriveKey may in fact be doing something like this. -- http://mail.python.org/mailman/listinfo/python-list
