[Patentpractice] reliable way to compare SHA-512 strings from Patent Center?

[Jim Larsen]

FYI, both Windows and MacOS have built-in SHA512 tools, so no need to download new tools unless you want/need a GUI.

Windows (command line):
certutil -hashfile filename SHA512

MacOS (Terminal)
sha512 filename

Best regards,

-Jim

James C. Larsen
Attorney
Larsen IP PLLC
p: 425.298.6846
e: jim at Larsen-IP.com<mailto:jim at Larsen-IP.com>
w. www.Larsen-IP.com<http://www.Larsen-IP.com>

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From: Patentpractice <patentpractice-bounces at oppedahl-lists.com> on behalf of Rick Neifeld via Patentpractice <patentpractice at oppedahl-lists.com>
Date: Friday, December 13, 2024 at 12:45 PM
To: For patent practitioners. This is not for laypersons to seek legal advice. <patentpractice at oppedahl-lists.com>
Cc: Rick Neifeld <richardneifeld at gmail.com>
Subject: Re: [Patentpractice] reliable way to compare SHA-512 strings from Patent Center?
HashTool, a free MS software standalone dones this just fine.  Set it to SHA-5123, as shown below.

[cid:ii_m4n7uicx0]



On Fri, Dec 13, 2024 at 2:59 AM William Ahmed via Patentpractice <patentpractice at oppedahl-lists.com<mailto:patentpractice at oppedahl-lists.com>> wrote:
Dear List,

BACKGROUND (The Old Days -- EFS Web)

Until 2023, we always submitted filings via EFS web. EFS web provided the BYTE COUNT upon filing.

This was great and important.

If 3 years later, when filing the figures for a continuation application, I wanted to make 100% sure that I was re-filing the exact same pdf file (instead of another version with the same file-name),
I would check the byte count (usually using an MS-DOS window - yeah, I am over 50 years old) to make sure.


PATENT CENTER (I need the same functionality that I used to have)

Now we live in the world of SHA-512 - Patent Center gives SHA-512 rather than bye count.
I want to do the same for Patent center - I want the ability to take a pdf file on my computer (e.g. 11 months after filing a US provisional), run it through SHA-512 and reproduce the SAME SHA-512 string.

I am embarrassed to say that I TRIED and I  FAILED

In Jan 2024, a US provisional was filed -- the drawings file (USProvfiguresJan2024.pdf had a SHA-512 value of "abcdefg".
I now downloaded and installed a free "Digital Volcano Hash tool" -- I gave it USProvfiguresJan2024.pdf and asked for the
SHA-512 string.
The 'SHA-512' hash strings did NOT match.


What am I doing wrong?

Thanks,
Bill
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--
Best regards
Rick Neifeld, J.D., Ph.D.
Neifeld IP Law PLLC
9112 Shearman Street, Fairfax VA 22032
Mobile: 7034470727
Email: RichardNeifeld at gmail.com<mailto:RichardNeifeld at gmail.com>;
This is NOT  a confidential and privileged communication.  If you are not the intended recipient, please delete this email and notify the sender you have done so.

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