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Article #9

Re: Gathering entropy for PRNGs on MVS

#9
From: Duke Arber
Date: Mon, 10 Mar 2003 17:03
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> That means you're running on a virtual machine, right?  There's no
> entropy at all.  Well, maybe you can sample a CPU cycle counter over a
> long period or something like that.  There could be some entropy there
> because of how other VM's on the same physical machine cause your
> program to have more or less cache hits and misses.

MVS can run as a guest O/S on IBM's VM O/S or it can run as the only O/S.
The most likely case is running as the only O/S.
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From: "Duke Arber" <duke_arber@yahoo.com>
Newsgroups: sci.crypt.random-numbers,bit.listserv.ibm-main,sci.crypt
Subject: Re: Gathering entropy for PRNGs on MVS
Date: Mon, 10 Mar 2003 12:03:57 -0500
Organization: MindSpring Enterprises
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