Digital Signature

A digital signature is a cryptographic construction using a private key to sign data such that anyone with the corresponding public key can verify both the origin and the integrity. Algorithms include RSA-PSS, ECDSA, EdDSA, and post-quantum candidates. Digital signatures underpin X.509 certificates, code signing, JWT tokens, and STIR caller-ID attestation.

Categories: Security ControlsProtocols and StandardsInternet and Routing

Digital Signature in context

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.

Telecom security is written into standards from 3GPP, GSMA, ETSI, IETF and ITU-T. Understanding which body owns which specification, and how the specs interlock (for example 3GPP TS 33.501 with GSMA FS.34 for 5G SBA security), is essential for both design and audit work.

To place Digital Signature in the wider telecom-security picture, review SHA, ML-DSA, SLH-DSA, Decryption, OSPF and HMAC-SHA256.

Related terms

Related topic hubs

  • 6G Security Emerging 6G threat model, AI/ML surfaces and post-quantum concerns.

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