Python 2.4中的SHA256哈希

Question

Is there a way I can calculate a SHA256 hash in Python 2.4 ? (I emphasize: Python 2.4) I know how to do it in Python 2.5 but unfortunately it's not available on my server and an upgrade will not be made. I have the same problem as the guy in this question, but using Python 2.4. Any help will be greatly appreciated.

EDIT: Sorry, I mean SHA 256. I was too in a hurry. Sorry again.

Answer 1

Yes you can. With Python 2.4, there was SHA-1 module which does exactly this. See the documentation .

However, bear in mind that code importing from this module will cause DeprecationWarnings when run with newer Python.

Ok, as the requirement was tightened to be SHA-256, using the SHA-1 module in standard library isn't enough. I'd suggest checking out pycrypto , it has a SHA-256 implementation. There are also windows binary releases to match older Pythons, follow the links from Andrew Kuchlings old PyCrypto page .

Answer 2

You can use the sha module, if you want to stay compatible, you can import it like this:

try:
    from hashlib import sha1
except ImportError:
    from sha import sha as sha1

Answer 3

在http://pypi.python.org/pypi/hashlib上有一个backported版本的hashlib，我只是向后移植了较新的hmac版本并将其放在http://pypi.python.org/pypi/hmac上