Function Get-RandomAlphanumericString {
	
	[CmdletBinding()]
	Param (
        [int] $length = 5
	)
    # Numbers: (0x30..0x39)
    # Lower Case: ( 0x61..0x7A)
    # Upper Case: ( 0x41..0x5A)
    return ( -join ((0x30..0x39) + ( 0x41..0x5A) | Get-Random -Count $length  | % {[char]$_}) )	
}
$key = ""
(1..5) | % {
    if ($_ -eq 5) {
        $key += (Get-RandomAlphanumericString)
        $key = "License Key: " + $key
    } else {
        $key += (Get-RandomAlphanumericString) + "-"
    }  
}

$key | gpg --clearsign > ./license.key