ETSI GR QSC 003 V1.1.1

The present document examines a number of real-world uses cases for the deployment of quantum-safe cryptography (QSC). Specifically, it examines some typical applications where cryptographic primitives are deployed today and discusses some points for consideration by developers, highlighting features that may need change to accommodate quantum-safe cryptography. The main focus of the document is on options for upgrading public-key primitives for key establishment and authentication, although several alternative, non-public-key options are also discussed.