Tell HN: Zoom truncates passwords to 32 chars

Re:Tell HN: Zoom truncates passwords to 32 chars by rcxdude on Wednesday April 01, 2020 @12:59PM (#22750881)

Is there a cryptographic hash algorithm that doesn't? It seems like that would make it non-cryptographic (since you will need to read each byte at least once).

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Re:Tell HN: Zoom truncates passwords to 32 chars by Dylan16807 on Wednesday April 01, 2020 @01:11PM (#22751038)

Reading each byte once only takes a few microseconds. That's not the issue.

What you need is for the slow core of the algorithm to be fixed-speed.

Either by only reading the input bytes during initialization, or by only feeding a fixed number of input bytes into the core during each round.

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