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) are the anchor for authentication, charging, lawful interception and fraud analytics. Any protocol or interface that leaks a permanent identifier is treated as a serious privacy defect, which is why 5G introduced SUCI concealment on the air interface.

Security controls in telecom span signaling firewalls (SS7/Diameter/GTP screening at the network edge), transport encryption (IPsec, TLS, PRINS), identity and access on OSS/BSS, and monitoring at both the packet and log level. Controls are audited against GSMA FS.11/FS.19/FS.20/FS.36 and, in Europe, NIS2 sectoral rules.

To place Key Management in the wider telecom-security picture, review USIM, OASIS, OCS, SM-DP+, SECA and SSH.

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