Verify the Integrity of Downloaded files using hash values

If you download a lot of files from the internet, chances are you’ve seen an MD5 hash next to the download link. MD5, SHA1 and CRC-32 file hashes are common hashes that are used to verify the integrity and authenticity of files. These ensure that the file you got is in fact the file you were supposed to get. There are various tools to calculate the hash of downloaded file and compare with the original posted. Lets review couple of best applications available.

HashTab is a Windows shell extension which adds a new tab called "File Hashes" to theHashtab Interface Windows Explorer file properties that displays the file hashes for that file in several commonly used hash formats. To verify the authenticity of a download, then, you would just right-click the downloaded file, select Properties, and then compare the file hash in the new File Hashes tab to the hash posted on the download page. HashTab also compares files on your desktop to help you determine whether or not the files are identical. Hashing is a very CPU intensive process and as this adds tabs to all files, it might slow things down. Download from HashTab

MD5 Checker is a free portable application to verify MD5 checksum for downloadedMD5 Checker Interface files. Copy the posted MD5 hash and open the MD5 Check Utility (MD5.Exe) and this should automatically paste in application. Browse to and select the downloaded file to compare the MD5 checksum. Download from

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