At most, you can find Genesis 9:1 - 6 as allowing eating of meat and not explicitly stating that it is OK to eat human flesh (as long as you don't consider humans as «
moving»
creatures), but as far as looking at the law in detail goes; search the Law in detail and you will find many explicitly laid out things that you «shall not eat»
listing many different types of animals and circumstances but you will not find humans
listed among them.