Good day, everyone,

I am searching for untouched version of George Marsaglia's Diehard
CD-ROM. By "untouched" I mean bit-identical ISO copy of original CD-ROM
disc.

Of course I found many copies of CD-ROM contents in Internet, but I also
found that some of them are different between each instance - starting
from details like different EOL format in source code files, and up to
errors like some files totally omitted or being binary different from
each other. This is too much for my OCD. I don't trust Internet copies
I found anymore.

I think sci.crypt is a good place to ask for potential owners of this
disc. If it will be found, I plan to upload it to archive.org to
preserve for eternity this undisputably important piece of computer history.

I planned to post my request on sci.crypt.random-numbers, but it has no
activity.

More info, including photo of original disc is available at
https://github.com/jeffThompson/DiehardCDROM

With kindest regards,

Chax Plore

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Chax Plore <ftilojim@tznvy.pbz> wrote:
> Good day, everyone,
>
> I am searching for untouched version of George Marsaglia's Diehard
> CD-ROM. By "untouched" I mean bit-identical ISO copy of original CD-ROM
> disc.

How do you plan to validate that what you /might/ eventually receive is
in fact bit-identical to said original? Do you have hash values for
the originals to use to verify "identical"?

I.e., gaming this out, an 'interested' attacker could create and post
you a cdrom that looks visually identical to the original in every way,
but does not in fact contain bit-identical data to an actual original.

> I planned to post my request on sci.crypt.random-numbers, but it has no
> activity.

Do note that "no postings" does not equate perfectly with "no readers".
There could be people who would read and respond, but only in reply to
a post.

> More info, including photo of original disc is available at
> https://github.com/jeffThompson/DiehardCDROM

Unfortunately I do not have any copies to offer up.

On 2024-03-03 21:03, Rich wrote:
> Chax Plore <ftilojim@tznvy.pbz> wrote:

> How do you plan to validate that what you /might/ eventually receive is
> in fact bit-identical to said original? Do you have hash values for
> the originals to use to verify "identical"?
>
> I.e., gaming this out, an 'interested' attacker could create and post
> you a cdrom that looks visually identical to the original in every way,
> but does not in fact contain bit-identical data to an actual original.
>
Well, there are good folks here, active for years, who, I assume, can be
trusted, unless they all are undercover NSA operatives ;)

More seriously, I would check for all differences between CDROM files
received and files from other copies. All differences I would analyse
if they are innocent format-only, like different newline standards,
or if they are much deeper differences, which I would treat with utmost
suspicion.

> Do note that "no postings" does not equate perfectly with "no readers".
> There could be people who would read and respond, but only in reply to
> a post.

Thank you for this suggestion, I will post my request also to other
groups as well.

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