Review Steps 1 to 6 in the diagram to understand the process. 5. This simple example of identification and authentication uses the asymmetric-key algorithm. Now let’s investigate a real-life ...

Another type of algorithm—an asymmetric-key algorithm—uses two keys: a public key that may be known by anyone, and a private key that is known by only one party and must be kept secret.

The algorithm they presented in 1976, known as Diffie-Hellman, introduced the general notion of what is now called asymmetric encryption, or public-key cryptography. The far-ranging and long ...