Under CopyrightKunzmann, FelixFelixKunzmannSkubich, ChristianChristianSkubichPriwitzer, HolgerHolgerPriwitzerKrause, StefanStefanKrauseGiering, Kay-UweKay-UweGiering2024-10-072024-10-072024-09https://publica.fraunhofer.de/handle/publica/476898https://doi.org/10.24406/publica-371810.24406/publica-3718Quantum Key Distribution (QKD) requires not only the transmission and detection of quantum states, but also a complex set of algorithms that post-process the correlated measurement results to produce secret keys. Furthermore the protocol steps need to be coordinated and controlled. We present a highly modular and therefore universal software framework that we apply on a regional BBM92-type QKD link, and presently extend towards satellite-based QKD and towards MDI-QKD protocols. Besides performing the post-processing algorithms, it controls various hardware components, provides tools for real time analysis and debugging of both software and optical alignment. It allows the selective acceleration of performance-critical algorithms and supports distributed execution, including a public, but authenticated, classical communication channel.enDDC::000 Informatik, Informationswissenschaft, allgemeine Werkeposter