Well, Diffie-Hellman Key Exchange does something similar. Create a key out of nowhere for 2 parties to boot strap communicate safely. (obviously Diffie-Hellman

Well, Diffie-Hellman Key Exchange does something similar. Create a key out of nowhere for 2 parties to boot strap communicate safely. (obviously Diffie-Hellman doesn't solve all problems like knowing who you are actually talking to)