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Date: Fri, 22 Dec 2023 15:25:22 +0000
From: Jason Keltz <>
To: "" <>
Subject: john jumbo 1.9.0 and yscrypt support


I'm trying to use John 1.9.0 jumbo with yescrypt support.
I've compiled it on a RHEL8 system, and I know that RHEL8 doesn't use yescrypt for its own passwords, but it doesn't really matter.  The sample file I'm experimenting with has username:yescrypt hash.
I see that there's a "yescrypt" directory inside the source folder.  I see that yescrypt is compiled as part of John.
I can even run src/yescrypt/test and it does a bunch of successful tests!
However, when I try to use the newly compiled john tool with yescrypt hashes, I get:

Warning: hash encoding string length 75, type id $y
appears to be unsupported on this system; will not load such hashes.

Any ideas?


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