Re: Sequence Identification Routines?

[Charlie Root <weedpower () home ro>]

Nick Jacobsen wrote:

> I was hoping one of you might have some input here...  I am black box
> testing a web app that generates a 5 character (letter and number only,
> lowercase) verification string, that it then emails to the email address on
> file, and then the receiver has to type it in to continue with his
> registration...  now, I am looking for some sort of programming routines,
> snippets, or programs, that will look at a set of say, a 1000, numbers, and
> tell me if there is any sensible pattern, off which to predict the next 5
> character string in the sequence.  Any suggestions welcome!
>
> Thanks,
> Nick Jacobsen
> Ethics Design
> nick () ethicsdesign com
>
>
>
>  
I don't know if this might help but I've recently came across a similar 
web app (it was used to generate the confirmation code for subscribing 
to a e-zine) and they used an encrypted string (containing something 
like: subscribe:user_email () mail com)... Now I don't know any encription 
method that would generate 5 character verification string... yet 
sometimes putting a string into john might give some surprising results