300ms for md5sum and 240ms to deserialize?

https://cvsweb.openwall.com/cgi/cvsweb.cgi/Owl/packages/john/john/src/MD5_std.c?rev=1.5.2.2;content-type=text%2Fplain doesn't seem John the Ripper uses simd

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1 месяц назад

Павλо 🇺🇦

Павλо 🇺🇦
https://cvsweb.openwall.com/cgi/cvsweb.cgi/Owl/pac...

maybe compiler automatically vectorizes pieces, but I doubt it's completely vectorized

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1 месяц назад

Павλо 🇺🇦

Павλо 🇺🇦
maybe compiler automatically vectorizes pieces, bu...

anyway. With json you don't really have to even calculate anything

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1 месяц назад

Thomas Автор вопроса

Павλо 🇺🇦
maybe compiler automatically vectorizes pieces, bu...

Vectorization can have negative performance effects if the JSON is not good with the cases that fit vectorization

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1 месяц назад

Павλо 🇺🇦

Павλо 🇺🇦
anyway. With json you don't really have to even ca...

Implementation will be liberal af in this case, but all you'll get is a copy of a single machine word per token. And a bunch of ifs

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1 месяц назад

Павλо 🇺🇦

Thomas
Vectorization can have negative performance effect...

but we're talking about big-enough strings

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1 месяц назад

Thomas Автор вопроса

Павλо 🇺🇦
but we're talking about big-enough strings

No

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1 месяц назад

Павλо 🇺🇦

Thomas
No

yes, we do

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1 месяц назад

Павλо 🇺🇦 · Accepted Answer

Павλо 🇺🇦

so

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1 месяц назад

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300ms for md5sum and 240ms to deserialize?

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