HP3000-L Archives

January 2002, Week 4

HP3000-L@RAVEN.UTC.EDU

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Subject:
From:
Tom Emerson <[log in to unmask]>
Reply To:
Tom Emerson <[log in to unmask]>
Date:
Thu, 24 Jan 2002 10:49:08 -0800
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> -----Original Message-----
> From: John Pollard
>
> And, yes, MPEX can do this - my one small nit to pick is that MPEX
> creates a PRIViledged file (JOBSAVE's file is not PRIV) which
> adds some work to our method of handling saved jobs.

That "nit" is intentional -- it is a small homage to security as the file of
saved jobs contains plaintext passwords and lockwords.  Making it a PRIV
file reduces the opportunities for a cracker to gain access.  OTOH: since
you have MPEX, you *could* use MPEX to alter the filecode to a positive
value, thus removing the PRIV file restriction [but you need to remember to
change it back when re-submitting the jobs]

I suppose a better solution would be to encrypt the file, but two-way
encryption is getting more and more trivial to break, and in this case, it
is fairly easy anyway -- certain characteristics of jobs makes it easy to
spot patterns in an encrypted file [most lines begin with "!"; jobs start
with !JOB XXXX... and end with !EOJ; etc.]

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