https://locodigital.com.br/en/tags/file-integrity/Recent content in File Integrity on LocodigitalHugoen-USWed, 23 Sep 2026 09:00:00 -0300https://locodigital.com.br/en/technology/get-filehash-powershell-verify-file-integrity/Wed, 23 Sep 2026 09:00:00 -0300https://locodigital.com.br/en/technology/get-filehash-powershell-verify-file-integrity/<p>You downloaded the Firefox installer straight from the official site. Your antivirus didn't complain. But how do you know that, somewhere between Mozilla's server and your hard drive, nobody swapped that file for a modified version? The answer fits in two lines of PowerShell and a 64-character hexadecimal number.</p> <h2>What is Get-FileHash?</h2> <p><code>Get-FileHash</code> is a native PowerShell cmdlet (available since version 4.0) that calculates the hash value of any file. A hash is a mathematical "fingerprint" of the content: changing a single byte produces a completely different hash. If the hash you calculate matches the one the vendor published, the file is identical to the one that left their server.</p>