beerdigr

Arthrovassal?

Didn't you consider to take it, even for a second? Some of it, at least? It really surprises me (in a positive way), that there are teens like you. Faith in next generation restored.

To keep it simple - he has a key (think of it as a signature of sorts), which only he knows. He then signs a message, a post, a text, etc. There's also a public key, which is available to all and it is possible to use this public key to verify anything that is signed by Assange's personal key. I hope this makes more sense.