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A comment on An encrypted ZIP file can have two correct passwords – here's why. Parent comment

Re:An encrypted ZIP file can have two correct passwords – he... by riotman on Sunday August 21, 2022 @05:32PM (#32544673)
Unless it's invertible.
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Re:An encrypted ZIP file can have two correct passwords – he... by PeterisP on Sunday August 21, 2022 @07:09PM (#32545414)
Hash functions can't be invertible due to pigeonhole principle, as there are more possible inputs than possible outputs for a fixed-size hash.
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