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
9/00
Cryptographic mechanisms or cryptographic; arrangements for secret or secure communications; Network security protocols
9/00
Cryptographic mechanisms or cryptographic; arrangements for secret or secure communications; Network security protocols
H04L9/32
including means for verifying the identity or authority of a user of the system; or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
H04L9/32
including means for verifying the identity or authority of a user of the system; or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
H04L9/321
involving a third party or a trusted authority
H04L9/321
involving a third party or a trusted authority