A number of solutions are available for providing authentication and encryption services. Some are products produced by a specific vendor, and others are open standards. Which option is right for you depends on your specific requirements. The following options are the most popular for providing authentication, encryption, or a combination. Most likely, one of these solutions can fill your needs.
8.5.1. Data Encryption Standard (DES)
DES was, for many years, the encryption standard used by the U.S. government for protecting sensitive, but not classified, data. The American National Standards Institute (ANSI) and the Internet Engineering Task Force (IETF) have also incorporated DES into security standards. DES is by far the most ...