Cryptographic systems are the common implementations of standard algorithms. They may be used in applications and embedded systems.
The following are some systems that are popular:
Transport Layer Security (TLS) and its predecessor Secure Sockets Layer (SSL) are protocols that provide communication security by encrypting sessions while using the Internet. They use many of the cryptographic algorithms discussed previously. Some of the activities that can be secured by TLS or SSL are web browsing, e-commerce transactions such as online shopping, banking, and more, and instant messaging or Internet chat.
Secure Electronic Transaction (SET) is a set of standard protocols for securing credit card transactions over insecure networks. SET uses digital certificates and public key cryptography. One of the primary applications is to ensure security while using credit cards over the Internet.
IPSec is a set of protocols to secure Internet communication. Authentication...