HKDF (HMAC-based Key Derivation Function)

HKDF in context

Security controls span signaling firewalls (SS7/Diameter/GTP screening), transport encryption (IPsec, TLS, PRINS), identity and access on OSS/BSS, and monitoring at both packet and log level. Controls are audited against GSMA FS.11/FS.19/FS.20/FS.36.

Telecom security is written into standards from 3GPP, GSMA, ETSI, IETF and ITU-T. Understanding which body owns which specification, and how they interlock, is essential for both design and audit work.

To place HKDF in the wider telecom-security picture, review DTLS-SRTP, XMPP, SRTP, NAF, VPN and HTTPS: each entry cross-references back to this page so you can walk the topic in either direction.

Related terms

• DTLS-SRTP
• XMPP
• SRTP
• NAF
• VPN
• HTTPS
• Management Plane
• Mediation Device (Lawful Interception)

Related topic hubs

• 5G Security 5G SBA, SEPP, SUCI, 5G-AKA, N32 and service-based interface security.
• 5G Penetration Testing Pentesting the 5G core, SBA, SEPP, and gNB interfaces.
• 5G Security Training Training on 5G core, SBA, N32, SUCI and radio security.
• 5G NEF Security Network Exposure Function security in the 5G core.

More from the TelcoSec Glossary

Browse the full TelcoSec Glossary, the Ultimate Guide to Mobile Network Security, or the P1 Arsenal of telecom-security tools.