H
ELECTRICITY
H04
ELECTRIC COMMUNICATION TECHNIQUE
H04L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
H04L63/00
Network architectures or network communication protocols for network security
H04L63/04
for providing a confidential data exchange among entities communicating through data packet networks
H04L63/0428
wherein the data content is protected, e.g. by encrypting or encapsulating the payload