Recommendation ITU-T Q.4162 (12/2023) Protocols for Kq-1 interfaces for quantum key distribution networks Summary History FOREWORD Table of Contents 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 Kq-1 interface 7 Signalling procedure 7.1 Signalling procedure for proactive key supply mode 7.2 Signalling procedure for key supply upon request mode 8 Signalling messages and parameters 8.1 Messages and parameters for proactive key supply mode 8.1.1 Key supply message 8.1.2 Response to key supply message 8.2 Messages and parameters for key supply upon request mode 8.2.1 Key request message 8.2.2 Response to key request message 9 Security considerations Appendix I Protocol implementation using the transmission control protocol Appendix II Protocol implementation for key supply upon request mode using hypertext transfer protocol secure II.1 Key request message II.2 Response to key request message Bibliography