Large Files
Hi Guys,
Great products btw! Just to let you know your SHA-1 on files larger than 2GB is way off, and I have tested this on three versions, 1.4, 1.6.0.4 and beta version 2.
Ver 1.4 always gives me a result of DA39A3EE5E6B4B0D3255BFEF95601890AFD80709 for files larger than 2gb
Ver 1.6.0.4 throws an exception for file larger than 2gb
Ver 2 has a correct CRC-32 and MD5 but SHA-1 is way off.
On smaller files, all works fine on all versions I tested.
Are both the SHA-1 on the General and Hashes tab wrong or only the second one?
The General tab uses a implemention we created to calculate multiple hashes readitg the file only once, while the Hashes tab is based on an older codebase. I took a look at that and indeed found it to be using a routine limited to 2 GB.
Since you mentioned only the three on the General tab, I'm a bit confused since if at all I would have suspected the other ones to be broken
Last edited by PepiMK; 2009-03-12 at 10:39.
Just remember, love is life, and hate is living death.
Treat your life for what it's worth, and live for every breath
(Black Sabbath: A National Acrobat)
The SHA-1 values on both tabs are identical and incorrect...
Which tool do you compare it against to be sure that it is incorrect?
As I said, both are separately written implementations. And I just compared to what HashTab outputs and if ours are broken, that one would be, too, because it has the same output on a 7 GB test file.
(btw, I remember that Shareaza has a different output for SHA1, but that was independent of size and since it was a single thing I compared against a few other tools back then, I assumed it was a Shareaza bug)
Last edited by PepiMK; 2009-03-12 at 13:37.
Just remember, love is life, and hate is living death.
Treat your life for what it's worth, and live for every breath
(Black Sabbath: A National Acrobat)
I used an application called HashCalc, very basic but it confirmed the SHA-1 hash correctly with what was published on the MSDN site for the ISO I was downloading.
8 GB file, same SHA-1 with that tool and FileAlyzer.
Last edited by PepiMK; 2009-03-13 at 12:20.
Just remember, love is life, and hate is living death.
Treat your life for what it's worth, and live for every breath
(Black Sabbath: A National Acrobat)
For some reason mine are different, I am on version 2.0.0.0, "File analysis tool 2.0.0.10".
I am running Vista Ultimate on a 32 bit Core 2 Duo if thats of any help.
The internal build is 16, but I don't remember changes to SHA support since then. But I'm adding SHA-256 etc. support next. Hope to see something when I do that. I'll surely remember to test with files as large as possible
Just remember, love is life, and hate is living death.
Treat your life for what it's worth, and live for every breath
(Black Sabbath: A National Acrobat)
SHA-1 Hash is Incorrect
I have the same problem. I downloaded VMware. The Web page posts MD5 and SHA-1 hashes, and Microsoft's FCIV utility says they are correct. Filealyzer gets the MD5 correct but the SHA-1 wrong.
I have attached images of what I see. I am running Filealyzer 2.0.0.0 on Windows 7 RC build 7100.
Image links
The forum shrunk the images so they are illegible. Here are links to the correct images.
http://samsclass.info/123/S09/FCIV.png
http://samsclass.info/123/S09/vmware-download.png
http://samsclass.info/123/S09/filealyzer1.png
http://samsclass.info/123/S09/filealyzer2.png
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