Learning Network Programming with Java

Summary

In this chapter, we introduced several Java approaches to secure communications between applications. We started with a brief introduction to security-related terms and followed the introduction with a more detailed discussion later.

There are two common encryption/decryption approaches that are used today. The first is symmetric key encryption, which uses a single key that is shared between the applications. This approach requires that the key be transmitted between the applications in a secure fashion.

The second approach uses asymmetric encryption. This technique uses a private and a public key. A message encrypted with one of these keys can be decrypted with the other key. Normally, the public key is distributed using a certificate from ...