Calculate MD5 Hash of file

Function Get-MD5
{
    Param([string[]]$string)

    $md5 = New-Object -TypeName System.Security.Cryptography.MD5CryptoServiceProvider
    $hash = [System.BitConverter]::ToString($md5.ComputeHash($string))

    return $hash
}

$md5 = Get-MD5([System.IO.File]::ReadAllBytes("C:\windows\fonts\arial.ttf"))
write-host $md5

if ($md5 -eq "FE-6B-41-F2-C2-D2-C7-65-5E-C1-E4-45-20-66-7A-14")
{
    write-host "Equal"
}