H
ELECTRICITY
H
ELECTRICITY
H04
ELECTRIC COMMUNICATION TECHNIQUE
H04
ELECTRIC COMMUNICATION TECHNIQUE
H04L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
H04L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
H04L9/00
Cryptographic mechanisms or cryptographic; arrangements for secret or secure communications; Network security protocols
H04L9/00
Cryptographic mechanisms or cryptographic; arrangements for secret or secure communications; Network security protocols
H04L9/40
Network security protocols
H04L9/40
Network security protocols