Public/get-AllegisIDNBasicAuthHeader.ps1

function get-AllegisIDNBasicAuthHeader($IDNClientID, $IDNClientKey)
{
    $Bytes = [System.Text.Encoding]::utf8.GetBytes("$($IDNClientID):$($IDNClientKey)")
    $encodedAuth = [Convert]::ToBase64String($Bytes)
    $header = @{'Content-Type' = 'application/json'; Authorization = "Basic $($encodedAuth)";}
    return $header
}