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Date: Thu, 19 Feb 2015 13:25:39 +0530
From: Sayantan Datta <>
To: john-dev <>
Subject: Re: descrypt speed

On Thu, Feb 19, 2015 at 1:00 PM, Royce Williams <> wrote:

> (That's quite a jump. Not knowing any better, is the many-salts value
> really supposed to be that high?)

Yes, that is correct. For one salt we have too many overheads such as key
generation, key transfer and key processing. But for many salts, same
processed key is used again and again for all salts. Generally we'd use
more than one salt, maybe around 1000 or so. But it is sufficient to use
10-20 salts to get an idea of what speed can be achieved using


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