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

[Rick Neifeld]

"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." -

If you did the calculation right, then the  "USProvfiguresJan2024.pdf." you
just calculated the SHA-512 hash value for is not the same file the USPTO
used to calculate the SHA-512 value.

Rick



On Fri, Dec 13, 2024 at 12:02 PM Andrew Berks via Patentpractice <
patentpractice at oppedahl-lists.com> wrote:

> The problem could be that the USPTO does some processing on their end and
> that changes the file from the version that you uploaded so the hash
> strings will never match. Keep in mind however that humans have to look at
> these files and humans don't read computer bits directly. We read text and
> images.
>
>
> Andrew H. Berks, Ph.D., J.D.
> Patent Attorney
> Berks IP Law PLLC
> 85 Broad St 17th Fl
> New York NY 10004 (US)
> mobile: +1 845-558-7245
> <http://voice.google.com/calls?a=nc,%2B18455587245>
> <http://voice.google.com/calls?a=nc,%2B18455587245>
> <http://voice.google.com/calls?a=nc,%2B18455587245>
> andrew at berksiplaw.com, berksiplaw.com  LinkedIn
> <https://www.linkedin.com/in/andyberks/>
>
>
> On Fri, Dec 13, 2024 at 3:00 AM William Ahmed via Patentpractice <
> 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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>>
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>>
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