Get to know E2E (end to end) encryption, says Dan Auerbach, a staff technologist at the Electronic Frontier Foundation.
Forget about encryption—your ISP could require the key as condition of using its network.
With the Assange movie, there are sequences like the [Vincente] Minnelli-like visual explorations of an encryption system.
The process of encoding a message so that it can be read only by the sender and the intended recipient. Encryption systems often use two keys, a public key, available to anyone, and a private key that allows only the recipient to decode the message. (See also cryptography.)