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Asked: 2026-05-28T18:33:10+00:00

I have (3) md5sums that I need to combine into a single hash. The

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I have (3) md5sums that I need to combine into a single hash. The new hash should be 32-characters, but is case-sensitive and can be any letter or number. What’s the best way to do this in Python?

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1 Answer

  1. Editorial Team

    I would start by combinind the md5 hashes into a single hash. You can use SHA256 since it will contain more bytes in the end:

    >>> import hashlib
>>> combined = hashlib.sha256()
>>> combined.update(hashlib.md5('test1').digest())
>>> combined.update(hashlib.md5('test2').digest())
>>> combined.update(hashlib.md5('test3').digest())

    Then you can use base64 to encode it using letters, numbers, and a few extra symbols:

    >>> import base64
>>> base64.b64encode(combined.digest())
'PeFC3irNFx8fuzwjAz+fE/up9cz6xujs2Z06IH2GdUM='

    If you want just 32 characters long, slice off the last bits:

    >>> base64.b64encode(combined.digest())[:32]
'PeFC3irNFx8fuzwjAz+fE/up9cz6xujs'

    This can contain + and / in addition to letters and numbers like your OP suggests. If you want to replace them, you can use the second parameter to b64encode:

    >>> base64.b64encode(combined.digest(), altchars="AA")[:32]
'PeFC3irNFx8fuzwjAzAfEAup9cz6xujs'
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