Date: Mon, 3 Sep 2018 14:30:41 +0200 From: Solar Designer <solar@...nwall.com> To: john-users@...ts.openwall.com Subject: Re: Cracking Long Passwords On Mon, Sep 03, 2018 at 12:06:54PM +0000, NeonFlash wrote: > Quick question regarding the password length restrictions in JtR. Is it possible to alter them? If so, do I need to modify some config file or source code and then recompile it? Generally no, this isn't something you can reasonably do as an end-user. Those limitations usually exist for good technical reasons, meaning that processing longer candidate passwords would require different code (typically more complex and/or slower), which hasn't been written. There are exceptions to that, though. For some formats, recompiling without SIMD support ("./configure --disable-simd") should result in higher maximum supported password lengths (but lower speeds). You can give this a try and see whether that build works for you at all (we rarely test this), and whether the reported maximum lengths for the formats you're interested in increase or not. If you do try this, please let john-users know of your results. Thanks. Alexander
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