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PQC Migration for 5G Signalling and Authentication Protocols

Migrating 5G NAS, SBA, and SUPI encryption to post-quantum standards under 3GPP Release 20 timelines.

Full day (6 hours)
Certificate on completion
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Course Overview

For 5G core architects and 3GPP SA3 teams. Covers quantum exposure in 5G-AKA, SUPI/SUCI ECIES encryption, N32 PRINS/TLS, and SBA service mesh. Addresses ML-KEM/ML-DSA migration, hybrid deployment, and 3GPP Release 19 quantum-safe timelines.

Curriculum

Course content is structured into sessions below. Each session is configurable to your organisation's environment, threat model, and objectives.

# Session Topics
1 5G Security Architecture and Quantum Exposure Where cryptography sits in the 5G protocol stack
  • 5G-AKA authentication flow: UE, SEAF, AUSF, UDM and the cryptographic primitives at each step
  • SUPI concealment via SUCI: ECIES on Profile A (Curve25519) and Profile B (secp256r1) as quantum-vulnerable targets
  • NAS and RRC layer encryption and integrity (NEA/NIA algorithms) and their post-quantum exposure
2 5G Interface Cryptographic Dependencies Protocol-level exposure mapping across the 5G core and RAN
  • N32 interface: PRINS and TLS profiles between SEPPs for inter-PLMN signalling
  • SBA service mesh: TLS 1.3 mutual authentication across NFs (AMF, SMF, PCF, UPF)
  • N3/N9 user plane: GTP-U with IPsec and the implications of quantum key compromise for data in transit
Break
3 Standards Landscape: 3GPP, GSMA, ETSI, and NIST Current and forthcoming requirements for quantum-safe 5G
  • 3GPP SA3 TR 33.875: Study on post-quantum cryptography for 5G and implications for Release 19/20
  • GSMA FS.40 (PQC migration guidelines) and FS.49 (quantum-safe GBA) applicability to MNO networks
  • NIST FIPS 203 (ML-KEM), FIPS 204 (ML-DSA), FIPS 205 (SLH-DSA), and draft FIPS 206 (FN-DSA): algorithm properties and selection criteria for telecom use cases
4 Interactive Demonstration Facilitator-led analysis of a reference 5G core architecture
  • Cryptographic inventory scan: mapping algorithm usage across a reference 5G SA deployment (AUSF, UDM, SEPP, UPF)
  • SUCI encryption migration impact analysis: ML-KEM substitution for ECIES and backward compatibility with Release 15/16 UEs
  • Hybrid certificate design for N32 SEPP-to-SEPP authentication using composite ML-DSA + ECDSA
Break
5 Migration Sequencing for 5G Network Functions Which functions migrate first and why
  • Priority sequencing: UDM/AUSF (authentication chain) before SEPP (roaming) before UPF (user plane)
  • Backward compatibility: supporting pre-quantum UEs during hybrid transition periods
  • Roaming partner interoperability: coordinating PQC adoption across interconnect boundaries with non-upgraded PLMNs
6 Operator Case Studies and Vendor Readiness Early movers and lessons from 5G PQC trials
  • Vodafone/IBM quantum-safe IPsec trial on 5G transport and lessons for production deployment
  • SK Telecom quantum key distribution integration with 5G core and the QKD versus PQC trade-off
  • Vendor readiness: Ericsson, Nokia, Huawei, Samsung RAN and core product roadmaps for PQC support
7 Q&A and Migration Roadmap Planning Building your organisation-specific PQC timeline

Designed and Delivered By

Training courses are designed and delivered by QSECDEF in collaboration with subject specialists. All instructors have direct experience in quantum technologies and security.

QD

Quantum Security Defence

Course design and delivery

QSECDEF brings expertise in post-quantum cryptography, quantum computing strategy, and defence-grade security assessment. Our membership spans 900+ organisations and 1,500+ professionals working at the intersection of quantum technologies and critical infrastructure security.

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