Table of Contents - X.1711 (03/2026) - Framework of quantum key distribution (QKD) protocols in QKD networks

1	Scope
2	References
3	Definitions
	3.1	Terms defined elsewhere
	3.2	Terms defined in this Recommendation
4	Abbreviations and acronyms
5	Conventions
6	Introduction
7	QKD protocol architecture
	7.1	Overview of QKD protocol
	7.2	QKD link
	7.3	Quantum communication stage
	7.4	Key distillation stage
8	Operations of QKD protocols
	8.1	Operation of QCS
	8.2	Operation of KDS
Appendix I – Categories of QKD protocols
	I.1	Based on QKD-Tx and QKD-Rx settings
	I.2	Based on trust assumptions in QKD modules
	I.3	Based on communication direction of QCS
	I.4	Based on encoding & decoding methods of quantum signals
Appendix II – Examples of operations for two typical kinds of QKD protocols
	II.1	Operations of decoy state BB84 protocol (P&M scheme)
	II.2	Operations of Gaussian modulation coherent state protocol (P&M scheme)
Appendix III – Attack models in the security proofs of QKD protocols
Appendix IV – Two-universal hash function as a strong quantum-proof randomness extractor
Appendix V – Epsilon (?) security of a QKD protocol
Appendix VI – Implementation security of QKD protocols on QKD modules
Bibliography