As the article points out, encryption is an already solved problem. The problem that is, and always has been problematic is key distribution. Companies that of

As the article points out, encryption is an already solved problem. The problem that is, and always has been problematic is key distribution. Companies that offer encryption products use various mechanisms to allow the sender and the recipient to end up with matching keys. It is surprisingly difficult to do correctly. It is not enough that the communication stays encrypted from the sender, through the server, and to the recipient. It is also important that no one besides the sender and recipient has the ability to decrypt that communication.