Date: Tue, 1 Sep 2009 08:48:52 -0600 From: RB <aoz.syn@...il.com> To: john-users@...ts.openwall.com Subject: Re: Some help On Tue, Sep 1, 2009 at 08:01, Lee Hambley<lee.hambley@...il.com> wrote: > Is there a reference of how to identify hashes? Generally speaking, no - context-free hashes can pretty easily look like each other; many are recognized by length. Because of this (and varying hashing schemes), UNIX-like systems usually prefix a designator to their hashes, which is usually documented in the system's crypt(3). JtR's code (specifically src/*_fmt.c) is the single most complete, centralized documentation I know of. If you read through some of those files, you'll notice that a lot of the identification is programmatic - length is only one of many calculations to see if a hash is a particular format.
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