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<div class="moz-cite-prefix">On 5/17/2019 2:29 AM, Vitor Jesus
wrote:<br>
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<blockquote type="cite"
cite="mid:CALmiUjCLy-6+RDN200OMiVD=e1g_qW0z==5dnhJcgWYwDqCNKQ@mail.gmail.com">
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<div>you can use Shamir thresholds for that but I have never
seen any commercial software doing it.</div>
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<div dir="auto">It should not be too hard to develop a simple
utility that joins the 2 keys into one accepted by a password
manager. It just needs a bit of a well-define secure
procedure.</div>
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<div dir="auto">v</div>
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<div dir="auto">---</div>
<div dir="auto">Vitor Jesus</div>
<div dir="auto"><a href="http://www.vitorjesus.com"
moz-do-not-send="true">http://www.vitorjesus.com</a></div>
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<div dir="ltr" class="gmail_attr">On Fri, 17 May 2019, 06:41
Allen Schaaf, <<a
href="mailto:netsecurity@sound-by-design.com"
moz-do-not-send="true">netsecurity@sound-by-design.com</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">Hi
folks,<br>
<br>
I'm looking for a program or file system to run on Windows
<br>
7/8.1/10 to keep data protected that requires two separate
keys <br>
used at the same time to open the file. It needs to be
like the <br>
missile launching system that was created using two
physical keys <br>
at the same time to prevent one crazy person from starting
a war.<br>
<br>
The goal for the credit union is to encrypt login
information <br>
used by the staff.<br>
<br>
Each of the staff has six or seven user names and
passwords for <br>
various local and remote systems. The manager/CEO and
assistant <br>
manager need to enable access to each account when either
there <br>
is a potential problem or when they are not available. One
<br>
example of this need is that US law requires each employee
to <br>
take a minimum one week vacation so that any fraudulent
behavior <br>
will be interrupted and also that the transaction they did
can be <br>
audited without them overseeing the audit process.<br>
<br>
I recall that there is a system like this but I'm unable
to find <br>
it. Given that it is a very small credit union and that it
<br>
functions in a lower income market it would be best if it
was <br>
free or low cost.<br>
<br>
I'm President of the BoD and the primary tech support
person in <br>
my retirement.<br>
<br>
Thanks,<br>
<br>
Allen<br>
<br>
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<br>
Hi Vitor and the rest of you, <br>
<br>
Thanks for the various responses. It is quite helpful in clarifying
my thinking.<br>
<br>
Not being a programmer, some of the answers are beyond me, alas.<br>
<br>
One thing that I now realize that I did not include is the need for
more than just two people to access the file. Just for discussion,
lets assume that there are five people, A, B, C, D, E, with an
access key. What is needed is one of the ten combinations to cover
the the presence/absence issues. So A/B, A/C, A,D, A/E, B/C, B/D,
B/E, C/D, C/E, D/E, all ten possibilities would cover presence
possibilities.<br>
<br>
Thanks,<br>
<br>
Allen<br>
<br>
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