AES (Advanced Encryption Standard)

A symmetric encryption algorithm standardized by NIST in 2001 and widely used in telecommunications. AES operates with 128, 192, or 256-bit keys and is the de facto encryption standard for VPNs, mobile networks, and data protection globally.

Categories: Core NetworkSecurity ControlsProtocols and Standards

AES in context

The mobile core carries subscriber sessions, mobility and policy. In 4G it is the EPC (MME, HSS, S/PGW); in 5G it is the Service-Based Architecture with AMF, SMF, UPF, AUSF, UDM and the NRF.

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 AES in the wider telecom-security picture, review OpenSSL, TNGF, DoT, 3G, Core Network Security Assessment and DOCSIS: each entry cross-references back to this page so you can walk the topic in either direction.

Related terms

Related topic hubs

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.