It is a good practice to check the integrity of a downloaded file to make sure you actually get exactly what you are meant to get.
This can be done if the owner provides a hash code. The hash code could be MD5, SHA1 SHA256 and I am sure there are or will be others but I will just comment on these three.
When using Windows 10, you don't need any special utilities to do a check.
Just open a command prompt
Type "command" in Windows Search next to the Windows button
Select "Command Prompt"
With the command prompt now open, go to your downloads folder
For example:
cd \users\(your_username)\downloads
Now, for an MD5 hash:
checkutil -hasfhile (yourfile) MD5
For an SHA1 hash:
checkutil -hasfhile (yourfile) SHA1
For an SHA256 hash:
checkutil -hashfile (yourfile) SHA256
The checkutil utility will display the hash of the file which you will need to compare with that supplied by the original owner of the file.
Example:
C:\users\marcus\Downloads> certutil -hasfile gpg4win-3.1.5.exe MD5
returns
MD5 hash of gpg4win-3.1.5.exe:
732614c35a846890718230cd73f96722
CertUtil: -hashfile command completed successfully.
Thursday, 31 January 2019
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