Wednesday, 21 June 2023

On uniqueness and MD5 hashes

Came across this today: someone needs an unique key, but thinks that Python's uuid4 is not unique enough. The proposed solution? Just get the MD5 hash of the uuid.

No, passing your non unique identifier thru the MD5 formula won't make it more unique. In fact, it will create something equally non unique as your initial uuid. Only larger.

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