76 lines
2.3 KiB
PowerShell
76 lines
2.3 KiB
PowerShell
# Compare-FileHash.ps1 (PowerShell)
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# Description: Compare a file hash value to validate authenticity.
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# Usage: Compare-FileHash -File <filename> -Hash <hash>
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# Author: Justin Oros
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# Source: https://github.com/JustinOros
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function Compare-FileHash {
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param (
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[string]$File,
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[string]$Hash
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)
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# Ensure the file exists
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if (-not (Test-Path $File)) {
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Write-Host "File does not exist: $File"
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return
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}
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# Get file details
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$fileInfo = Get-Item $File
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$fileCreatedDate = $fileInfo.CreationTime
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$fileModifiedDate = $fileInfo.LastWriteTime
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$filePath = $fileInfo.FullName
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$fileName = $fileInfo.Name
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# Get system information
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$currentDate = Get-Date -Format "yyyy-MM-dd"
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$currentTime = Get-Date -Format "HH:mm:ss"
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$hostname = $env:COMPUTERNAME
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$username = $env:USERNAME
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# Function to detect hash type based on the provided hash length
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function Get-HashType {
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param (
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[string]$hash
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)
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switch ($hash.Length) {
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32 { return "MD5" }
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40 { return "SHA1" }
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64 { return "SHA256" }
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128 { return "SHA512" }
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default { return "Unknown" }
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}
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}
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# Get the hash type for the provided hash
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$givenHashType = Get-HashType -hash $Hash
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# Get actual file hash using Get-FileHash
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$actualHash = (Get-FileHash -Path $File -Algorithm $givenHashType).Hash
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$actualHashType = Get-HashType -hash $actualHash
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# Compare hashes
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$hashMatch = if ($actualHash -eq $Hash) { "Yes (Verified)" } else { "No (Not Verified)" }
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# Output the result
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Write-Host "Date: $currentDate"
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Write-Host "Time: $currentTime"
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Write-Host "Hostname: $hostname"
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Write-Host "Username: $username"
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Write-Host "File Name: $fileName"
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Write-Host "File Path: $filePath"
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Write-Host "File Created Date: $fileCreatedDate"
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Write-Host "File Modified Date: $fileModifiedDate"
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Write-Host "Actual File Hash: $actualHash"
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Write-Host "Actual File Hash Type: $actualHashType"
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Write-Host "Given File Hash: $Hash"
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Write-Host "Given File Hash Type: $givenHashType"
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Write-Host "Hash Match: $hashMatch"
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}
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# Example usage
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Compare-FileHash -File "C:\path\to\your\file.txt" -Hash "your_provided_hash_here"
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