The best method of verifying if the integrity of a file has not been affected is to calculate its hash values and compare them to previously-specified ones. Calculating their hash values (also known as “check sums”) is also a reliable method of comparing files. HashTab is a very neat and simple tool that provides one of the fastest and easiest ways of calculating the hash values of files, as it comes as a shell extension for your Windows system. You may view the hash values of a file by right-clicking it, selecting “Properties” from the Windows Explorer’s context menu (the right-click menu), and then checking the “File Hashes” tab.
A really nice thing about this application is the fact that it can calculate file check sums using multiple hash algorithms, such as Adler32, CRC32, HAVAL, MD4, MD5, SHA1, SHA2, SHA256, RipeMD, Tiger and Whirlpool. You can easily choose which ones of these will be used for the hash calculation from the application's "Settings" window. Furthermore, HashTab includes a simple, neat yet handy comparison function that lets you quickly compare the hashes of two files. Last but not least, this little tool is also completely free. As you can see, it truly represents a very fast and easy manner to quickly calculate the hash values of files.
v4.0 [Jan 21, 2011]
- You can now enter a hash to compare while the hash is running. This is handy for verifying large download files.
- When hashing completes, HashTab will now scan the clipboard to search for matching hash values. This means you can just copy a hash value from a web page and as long as it is still on the clipboard, HashTab will find it automatically and show the match.
- Updated to the latest release of CryptoPP.
- 64-bit install now includes the 32-bit DLL as well for people that run 32-bit file managers instead of Windows explorer. HashTab will "just work" with these custom configurations.
- Languages are now included as separate satellite DLLs. By default, HashTab will use the system language. You can change this in the registry HKCU\Software\Hashtab\Settings\LanguageModule set it to the name of the module you want to use such as "Resource.English.dll". There is currently no UI for this, but this may be useful for people creating custom images that include HashTab.
- HashTab has been rebranded for Implbits software and the license has been updated.
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