Comment 10 for bug 236170

You know, we could probably ditch pycrypto altogether if we just copied implementations of AES-CTR and SHA-256 into our tree. We'll want RSA sooner or later but that can't be all that big. We certainly don't need any of the other block ciphers or hash algorithms that pycrypto offers.

And if we required python2.5 (which I'm !!!not!!! advocating) then it comes with SHA-256 in the batteries-included 'hashlib' module..