Key Management

Key management is the lifecycle of cryptographic keys: generation, distribution, storage, rotation, archival, and destruction. Telecom key management spans subscriber long-term keys (Ki/K on SIMs), session keys derived from AKA, TLS and IPsec key material, PKI signing keys, and operator HSM-backed roots. NIST SP 800-57 is the de facto reference.

Categories: Identity and SubscriberSecurity ControlsProtocols and Standards

Key Management in context

Subscriber identifiers (IMSI, SUPI, MSISDN, IMEI) anchor authentication, charging and lawful interception. Any protocol that leaks a permanent identifier is treated as a privacy defect, which is why 5G introduced SUCI concealment on the air interface.

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.

To place Key Management in the wider telecom-security picture, review USIM, OASIS, OCS, SM-DP+, SECA and SSH: each entry cross-references back to this page so you can walk the topic in either direction.

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