We could do it easily every time we want to have a secure communication.

Bob thinks that this message is a secure communication from Alice.

Instead of an order form, you get the message "secure communications not supported."

When we have more secure communications, I want you to keep me up to date with briefings.

No such thing as a secure communication, even in a military emergency like this one.

The concept was taken up by engineers in 1957 and became the basic tool for secure military communications.

They had tactical surprise, secure communications, and a superior position.

It's time for a council of war while we have secure communications.

As you implied and I have said, we do need a better form of secure communication - faster.

The third tier is at the top of the hill, with facilities for secure military communications.