Reading and manipulating binary data

[Christos TZOTZIOY Georgiou]

On Sat, 30 Aug 2003 19:50:33 +0400, rumours say that "Dave"
<davbucko at yahoo.com> might have written:

>Also part of the authentication system involves MD5 hashes.  For this I need
>to be able to take a string, find its MD5 digest, and then xor it with
>another string.  But since the MD5 digest is binary, and I don't know how to
>change it, I can't xor it...  Please, I am sure I am missing something
>really obvious but I am stumped as to what it is.

A quick hint: a MD5 checksum is 16 bytes long; so if your machine has 32
bit integers, you can have a tuple of 4 ints with:

struct.unpack("4i", md5sum)

which you can use for xoring.
-- 
TZOTZIOY, I speak England very best,
Microsoft Security Alert: the Matrix began as open source.