Step on how to use sha1sum on Windows 2000 and Windows XP to check Fedora Core ISO images sha1 hash value.

 

What is SHA1SUM?

 

   The sha1sum usually refer to the SHA-1 cryptographic hash values for files. this article show the step  by step example on using sha1sum tools program on windows 2000, XP, 95, 98, ME, NT computer to check fedora core iso images for sha1 checksum value for file integrity and security.

 

   The program named sha1sum (or sha1sum.exe for Windows) is an computer program that is used to generate and checking SHA-1 cryptographic hash values for files.  There is others computer program on the net that serves the same purpose as sha1sum program.

 

What SHA1SUM for?

 

   Now day, if you download files, tools. program or ISO images from the FTP or HTTP download sever to your computer, they usually comes with  the official sha1sum values for the files.  This sha1sum values usually printed inside the file called SHA1SUM and this file usually located in the same directory of the files, tools. program or ISO images on the download server.

 

   This SHA1 hash value that printed inside the SHA1SUM file, is act as digital signature for that files.  Using these SHA1 hash value, we can compare and detect, verify the integrity of the file is still intact from or tampered by hackers, crackers, virus or data corrupted in the download process.

 

Note: You can open and view the SHA1SUM file with text editor or web browser.

 

Where can I download sha1sum tools for Windows 2000, Windows XP?

 

You can download sha1sum.exe for Windows 2000, XP from number of sites, bellow some list of site where you can download sha1sum tools.

Command line tools to generate and checking SHA-1 cryptographic hash values:

http://www.labtestproject.com/files/sha1sum/sha1sum.zip Sha1Sum:Working on Windows 95/98/Me/NT/2000/XP.

http://www.labtestproject.com/files/sha1sum/sha1sum.exe  Sha1Sum: Working on Windows 95/98/Me/NT/2000/XP.

http://www.slavasoft.com/fsum/ FSUM: Working on Windows 95/98/Me/NT/2000/XP.

http://www.slavasoft.com/hashcalc/  HashCalc: Working on Windows 95/98/Me/NT/2000/XP.

http://www.cryptosys.net/src/digsum.zip Sha1Sum: Working on Windows 95/98/Me/NT/2000/XP.

ftp://ftp.gnupg.org/gcrypt/binary/sha1sum.exe Sha1Sum: Working on Windows 95/98/Me/NT/2000/XP.

ftp://ebible.org/pub/sha1sum.zip Sha1Sum: Working on Windows 95/98/Me/NT/2000/XP.

 

DsSha.exe: The graphical tool to generate and check SHA-1 cryptographic hash values:

http://members.ozemail.com.au/~nulifetv/freezip/freeware/dssha.exe  DsSha: Working on Windows 95/98/Me/NT/2000/XP.

The dssha.exe tool also work on command line mode.

 

How do I run sha1sum.exe the sha1 hash value tool for Windows 2000 and Windows XP?

 

   If you need to check the sha1 sum hash value on windows, you have to download the sha1sum.exe program first.  Follow the step by step guide below to run sha1sum.exe on Windows 2000 and XP:  The step by step example below show how to use sha1sum on Windows operating system to check the Linux Fedora Core 5 ISO images.

 

1.  Starts a Windows 2000 command interpreter, Cmd.exe.  To start Windows 2000 Command Interpreter, click Start, click Run, and then type in cmd.exe on the Windows run box and click Ok button.

 

2.  Open Windows Explorer, locate the folder that contains the files that you want to check the sha1 hash value.

 

3.  Using the mouse, drag the sha1sum.exe tool to the windows command interpreter (cmd.exe).

Example:

 

Microsoft Windows 2000 [Version 5.00.2195]

(C) Copyright 1985-2000 Microsoft Corp.


C:\>D:\fedora\sha1sum.exe

 

 

4.  Using the mouse ones again, find the file that you want to check for the sha1 hash and drag it onto the Windows Command interpreter.  Make sure that you put space between the sha1sum.exe and the file.

Example:

 

Microsoft Windows 2000 [Version 5.00.2195]

(C) Copyright 1985-2000 Microsoft Corp.


C:\>D:\fedora\sha1sum.exe D:\fedora\FC-5-i386-disc1.iso

 

 

5.  Press Enter key and wait for sha1 hash result to appear on the screen.

Example on the sha1sum.exe result for FC-5-i386-disc1.iso SHA1 hash value:

 

Microsoft Windows 2000 [Version 5.00.2195]

(C) Copyright 1985-2000 Microsoft Corp.


C:\>D:\fedora\sha1sum.exe D:\fedora\FC-5-i386-disc1.iso

 43546c0e0d1fc64b6b80fe1fa99fb6509af5c0a0 D:\fedora\FC-5-i386-disc1.iso

 

 

6.  Repeat the same procedure to check other files.

Example on the sha1sum.exe result for FC-5-i386-disc1.iso, FC-5-i386-disc2.iso, FC-5-i386-disc3.iso, FC-5-i386-disc4.iso, FC-5-i386-disc5.iso SHA1 hash value:

 

Microsoft Windows 2000 [Version 5.00.2195]

(C) Copyright 1985-2000 Microsoft Corp.

 

C:\>D:\fedora\sha1sum.exe D:\fedora\FC-5-i386-disc1.iso

43546c0e0d1fc64b6b80fe1fa99fb6509af5c0a0 D:\fedora\FC-5-i386-disc1.iso

 

C:\>D:\fedora\sha1sum.exe D:\fedora\FC-5-i386-disc2.iso

a85ed1ca5b63e2803f29a33ea6a6bc8eb7f63122 D:\fedora\FC-5-i386-disc2.iso

 

C:\>D:\fedora\sha1sum.exe D:\fedora\FC-5-i386-disc3.iso

3f442d473a4137a27efa2843aec5a58aa4c2c5b5 D:\fedora\FC-5-i386-disc3.iso

 

C:\>D:\fedora\sha1sum.exe D:\fedora\FC-5-i386-disc4.iso

bea1e959dbb238773a872f70f8896905cfb7776a D:\fedora\FC-5-i386-disc4.iso

 

C:\>D:\fedora\sha1sum.exe D:\fedora\FC-5-i386-disc5.iso

3966b3041620f62b5e8c8ade31b3348779cd52e9 D:\fedora\FC-5-i386-disc5.iso

 

 

7. or you could use the sha1sum.exe using the wildcard to replace the files name.

 

Result example on the sha1sum.exe command:

 

Microsoft Windows 2000 [Version 5.00.2195]

(C) Copyright 1985-2000 Microsoft Corp.


C:\>D:\fedora\sha1sum.exe D:\fedora\*.iso

43546c0e0d1fc64b6b80fe1fa99fb6509af5c0a0 D:\fedora\FC-5-i386-disc1.iso

a85ed1ca5b63e2803f29a33ea6a6bc8eb7f63122 D:\fedora\FC-5-i386-disc2.iso

3f442d473a4137a27efa2843aec5a58aa4c2c5b5 D:\fedora\FC-5-i386-disc3.iso

bea1e959dbb238773a872f70f8896905cfb7776a D:\fedora\FC-5-i386-disc4.iso

3966b3041620f62b5e8c8ade31b3348779cd52e9 D:\fedora\FC-5-i386-disc5.iso

 

 

8.  Open and compare the result from the windows screen with the official Fedora Core 5 SHA1SUM that you get from the downloaded server or on the official Fedora Core web site.  Make sure these two result is match with each other.  If the result don't match, try running the these procedure ones again, if still not match, re-download the files (your downloaded files may be corrupted or have been tempered).

 

Example below show the official sha1 hash value from the Linux Fedora Core 5 download server:

--------------------------------------------------------------------------------------------------

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

cdeb3303f8c8a1fc521cd08948d727560eba488d FC-5-i386-rescuecd.iso
43546c0e0d1fc64b6b80fe1fa99fb6509af5c0a0 FC-5-i386-disc1.iso
a85ed1ca5b63e2803f29a33ea6a6bc8eb7f63122 FC-5-i386-disc2.iso
19d87a4c5f611fa852f20e6a30bb96ead0912354 FC-5-i386-disc3.iso
ed9a852cf77250c3ae111c621d350af5c0b0a29b FC-5-i386-DVD.iso
bea1e959dbb238773a872f70f8896905cfb7776a FC-5-i386-disc4.iso
3966b3041620f62b5e8c8ade31b3348779cd52e9 FC-5-i386-disc5.iso
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.1 (GNU/Linux)

iD8DBQFEF6hOtEJp0E8qb9IRAtVyAJ9d8MkWoT2VuN1ESxdtgLsAU/vgEgCeOpFp
wviXKRWVR/5IiFkBH+J6gAY=
=0eDh
-----END PGP SIGNATURE-----

---------------------------------------------------------------------------------------------------

 

Note:  The example above show the sha1 hash value calculate for Linux Fedora Core 5.  The example also show that the sha1 hash value for the FC-5-i386-disc3.iso image did not match with the official value release on the Fedora core website.  The FC-5-i386-disc3.iso image actually corrupted on the process of downloading the files. From the example above, the sha1 hash value is very useful to verify the integrity of the files is intact.

 

How can I check sha1 hash value on Windows using graphical mode?

To check the sha1 hash value using the graphical sha1sum tools:

1.  Download the dssha.exe tool.

2.  Find the files that that you want to check for the sha1 hash value.

3.  Using the mouse, drag the file and drop the file on the icon of the dssha.exe program.

4.  Wait until the sha1 hash result pops up on the windows dialog box.

5.  Compare the result of the sha1sum value on the Windows dialog box from the official sha1sum hash value publish on the downloaded server.

 

Note:  The dssha.exe tool also could be use on the command line mode in the Windows Command Interpreter (cmd.exe)

 

 

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