Excellent read. One example: > Consider the case of basic public key cryptography, in which a person’s public > and private key are created together in a single operation. These two keys are > entangled, not with quantum physics, but with math. > > When I create a virtual machine server in the Amazon cloud, I am prompted for > an RSA public key that will be used to control access to the machine. > Typically, I create the public and private keypair on my laptop and upload the > public key to Amazon, which bakes my public key into the server’s > administrator account. My laptop and that remove server are thus entangled, in > that the only way to log into the server is using the key on my laptop. And > because that administrator account can do anything to that server­—read the > sensitivity data, hack the web server to install malware on people who visit > its web pages, or anything else I might care to do­—the private key on my > laptop represents a security risk for that server...