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Date: Tue, 10 Mar 2015 22:09:24 +0530
From: Sayantan Datta <>
To: john-dev <>
Subject: Re: bcrypt-opencl

On Tue, Mar 10, 2015 at 8:41 PM, magnum <> wrote:

> In salt(), the CPU format currently has this:
>         if (ciphertext[2] == 'a' || ciphertext[2] == 'b')
>                 salt.subtype = 'y';
>         else
>                 salt.subtype = ciphertext[2];
>         return &salt;
> Will that be correct?

I don't see the CPU format doing anything new with the new subtype. Subtype
is used to set the keys_mode and the keys_mode in turn triggers the
sign_extension_bug which is handled in exactly same manner in both formats.
So, yes it is correct.


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