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 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.

Telecom security is written into standards from 3GPP, GSMA, ETSI, IETF and ITU-T. Understanding which body owns which specification, and how they interlock, 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: each entry cross-references back to this page so you can walk the topic in either direction.

Related terms

Related topic hubs

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

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