param (

    # Use Generate URL function to obtain a value for -sessionUrl parameter.

    $sessionUrl = "sftp://user:mypassword;fingerprint=ssh-rsa-xx-xx-xx@example.com/",

    [Parameter(Mandatory)]

    $localPath,

    [Parameter(Mandatory)]

    $remotePath,

    [Switch]

    $pause = $False

)

 

try

{

    Write-Host $localPath -foregroundcolor Gray

 

    # Calculate local file checksum

    $localChecksum = ((CertUtil -hashfile $localPath SHA1)[1] -replace " ","")

 

    # Write-Host "Local Checksum:"

    Write-Host $localChecksum

    

    # Load WinSCP .NET assembly

    Add-Type -Path (Join-Path $PSScriptRoot "WinSCPnet.dll")

 

    # Setup session options

    $sessionOptions = New-Object WinSCP.SessionOptions

    $sessionOptions.ParseUrl($sessionUrl)

 

    $session = New-Object WinSCP.Session

 

    try

    {

        # Connect

        $session.Open($sessionOptions)

        

        Write-Host $remotePath -foregroundcolor Gray

 

        # Calculate remote file checksum

        $sha1Command = "sha1sum -b $remotePath | awk '{print `$1}'"



        $result = $session.ExecuteCommand($sha1Command)

        $result.Check()

        $remoteChecksum = $result.Output;

        

        # Write-Host "Remote Checksum:"

        Write-Host $remoteChecksum

    }

    finally

    {

        # Disconnect, clean up

        $session.Dispose()

    }

 

    # Compare cheksums

    if ($localChecksum -eq $remoteChecksum)

    {

        Write-Host

        Write-Host "Match" -foregroundcolor "green"

        $result = 0

    }

    else

    {

        Write-Host

        Write-Host "Does NOT match" -foregroundcolor "red"

        $result = 1

    }

}

catch [Exception]

{

    Write-Host $_.Exception.Message

    $result = 1

}

 

# Pause if -pause switch was used

if ($pause)

{

    Write-Host "Press any key to exit..."

    [System.Console]::ReadKey() | Out-Null

}

 

exit $result