[GH-ISSUE #82] Wrong SHA256 checksum in PathCopyCopy17.0.exe.sha256 file? #81

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opened 2026-02-25 21:32:36 +03:00 by kerem · 3 comments

kerem commented

2026-02-25 21:32:36 +03:00

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Originally created by @goozak on GitHub (Sep 4, 2019).
Original GitHub issue: https://github.com/clechasseur/pathcopycopy/issues/82

Originally assigned to: @clechasseur on GitHub.

According to http://onlinemd5.com/ , the checksum in file PathCopyCopy17.0.exe.sha256 is different from the one calculated for file PathCopyCopy17.0.exe.

That website (with SHA-256 option selected) usually works for checking checksums, so I'm guessing it's the value in file PathCopyCopy17.0.exe.sha256 that is incorrect...?

Originally created by @goozak on GitHub (Sep 4, 2019). Original GitHub issue: https://github.com/clechasseur/pathcopycopy/issues/82 Originally assigned to: @clechasseur on GitHub. According to [http://onlinemd5.com/](http://onlinemd5.com/) , the checksum in file `PathCopyCopy17.0.exe.sha256` is different from the one calculated for file `PathCopyCopy17.0.exe`. That website (_with SHA-256 option selected_) usually works for checking checksums, so I'm guessing it's the value in file `PathCopyCopy17.0.exe.sha256` that is incorrect...?

kerem

2026-02-25 21:32:36 +03:00

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kerem commented

2026-02-25 21:32:36 +03:00

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@clechasseur commented on GitHub (Sep 4, 2019):

I tried recalculating the SHA-256 of the executable using two different programs: Hashcheck and 7-zip. I also tried the checksum generator at https://defuse.ca/checksums.htm. All three gave me this value:

5ac9a3bcb1c5f7de9225a6a984e9eb90b2c1c101fcb6c6e20f725002b54ed22f

...which is the value found in the PathCopyCopy17.0.exe.sha256 file published.

Your website, however, gives me

7E74AD3FB2078716725D5EAA2976FC915557AF5CA2AD8EFD22C9A13C835290AC

This is weird. Anyone knows what is the most "authoritative" SHA-256 generator available? I'd be inclined to think that it's your website that's wrong since all the other generators agree with each other...

@clechasseur commented on GitHub (Sep 4, 2019): I tried recalculating the SHA-256 of the executable using two different programs: Hashcheck and 7-zip. I also tried the checksum generator at https://defuse.ca/checksums.htm. All three gave me this value: 5ac9a3bcb1c5f7de9225a6a984e9eb90b2c1c101fcb6c6e20f725002b54ed22f ...which is the value found in the `PathCopyCopy17.0.exe.sha256` file published. Your website, however, gives me 7E74AD3FB2078716725D5EAA2976FC915557AF5CA2AD8EFD22C9A13C835290AC This is weird. Anyone knows what is the most "authoritative" SHA-256 generator available? I'd be inclined to think that it's your website that's wrong since all the other generators agree with each other...

kerem commented

2026-02-25 21:32:36 +03:00

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@goozak commented on GitHub (Sep 4, 2019):

I've used OnlineMD5 to check PHP and Apache setups downloads for a long time and it worked fine up until this executable. I guess something in the file data is tripping it up. Since there are no contact link on there, I'll just dump it.

Found this other one (good for bigger files) https://md5file.com/calculator, which gives me the correct hash (yours).

Sorry for the false alarm!

@goozak commented on GitHub (Sep 4, 2019): I've used OnlineMD5 to check PHP and Apache setups downloads for a long time and it worked fine up until this executable. I guess something in the file data is tripping it up. Since there are no contact link on there, I'll just dump it. Found this other one (good for bigger files) [https://md5file.com/calculator](https://md5file.com/calculator), which gives me the correct hash (yours). Sorry for the false alarm!

kerem commented

2026-02-25 21:32:36 +03:00

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@clechasseur commented on GitHub (Sep 4, 2019):

There's also this built-in Windows command that works:

CertUtil -hashfile path-to-file sha256

@clechasseur commented on GitHub (Sep 4, 2019): There's also this built-in Windows command that works: `CertUtil -hashfile path-to-file sha256`