This Star Wars font is based on the writing that appears on Darth Vader's chest box.

The text that appears on the chest box in The Empire Strikes Back was different from the text on the Return of the Jedi version. (There was no text on Vader's chestbox in A New Hope.) In addition, several other versions have cropped up over the years, all of which were created or modified after the original movies were made. In all, I've found six different versions of the chest box text. My font allows you to re-create all six of these versions. I'll go through each of these below.

Empire Strikes Back
Return of the Jedi
Magic of Myth
Star Wars Visual Dictionary
Art of Star Wars
Planet Hollywood / Netherlands

<style type="text/css">
@font-face{
    font-family:"sith-prophecy-regular";
    src:url("https://fontsme.com/wp-data/s/807/11807/file/sthproph.ttf") format("woff"),
    url("https://fontsme.com/wp-data/s/807/11807/file/sthproph.ttf") format("opentype"),
    url("https://fontsme.com/wp-data/s/807/11807/file/sthproph.ttf") format("truetype");
}
span.font0{font-family:"sith-prophecy-regular";font-size:50px;text-transform:none;}
</style>