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Mention that crc32 and adler32 are available in a different module (zlib).

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Some people look for them in hashlib.
This commit is contained in:
Gregory P. Smith 2008-03-19 01:38:35 +00:00
parent 0279f43950
commit bde40078b0
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4
Doc/library/hashlib.rst
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@ -21,6 +21,10 @@ algorithm (defined in Internet :rfc:`1321`). The terms secure hash and message
digest are interchangeable. Older algorithms were called message digests. The digest are interchangeable. Older algorithms were called message digests. The
modern term is secure hash. modern term is secure hash.
.. note::
If you want the adler32 or crc32 hash functions they are available in
the :mod:`zlib` module.
.. warning:: .. warning::
Some algorithms have known hash collision weaknesses, see the FAQ at the end. Some algorithms have known hash collision weaknesses, see the FAQ at the end.

3
Lib/hashlib.py
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@ -18,6 +18,9 @@ md5(), sha1(), sha224(), sha256(), sha384(), and sha512()
More algorithms may be available on your platform but the above are More algorithms may be available on your platform but the above are
guaranteed to exist. guaranteed to exist.
NOTE: If you want the adler32 or crc32 hash functions they are available in
the zlib module.
Choose your hash function wisely. Some have known collision weaknesses. Choose your hash function wisely. Some have known collision weaknesses.
sha384 and sha512 will be slow on 32 bit platforms. sha384 and sha512 will be slow on 32 bit platforms.