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Glossary

Network Authentication

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What is Network Authentication?

Network authentication is the process by which a device (such as an IoT module) proves its identity to a cellular network before being permitted to access network services. In the context of eSIM, eUICC, and IoT ecosystems, this is a cornerstone of secure connectivity, preventing unauthorized devices from joining the network and ensuring that only trusted devices exchange data.

In cellular networks (2G, 3G, 4G, 5G, NB-IoT, LTE-M), network authentication relies on credentials such as the device’s IMSI (International Mobile Subscriber Identity) to perform cryptographic verification.

Why Network Authentication Matters in IoT

  • Security & trust: Authentication ensures that only legitimate devices can communicate, deterring impersonation, spoofing, or unauthorized access.
  • Data protection: By validating devices before connectivity, networks can maintain integrity, confidentiality, and reliability of data flows.
  • Interoperability & standards compliance: Network authentication follows well-defined GSMA / 3GPP protocols, ensuring consistent behaviour across different networks and devices.
  • Foundation for advanced connectivity features: Once a device is authenticated, additional services (e.g., device authorization, profile updates, lifecycle management) can rely on that trust.

Device Authorization vs. Authentication

  • Authentication confirms who you are — it verifies a device’s identity against network credentials before granting access.
  • Authorization defines what you can do once authenticated, the device receives permissions (e.g. which services it can use, data-access rights, allowed actions).

Kigen emphasizes root-of-trust and end-to-end security, ensuring that credentials protected within the secure element or hardware enclave. 

Kigen’s eSIM operating systems and solutions are designed to uphold strong network authentication and secure identity as foundational components. 

Under the new GSMA SGP.32 IoT eSIM standard, Kigen’s eIM (eSIM IoT Manager) supports secure provisioning, identity binding, and cryptographic operations in constrained devices.