Quantum cryptography beyond key exchange

This chapter describes the applicability of quantum cryptography beyond key exchange. The section is devided into two parts: one describing applications of quantum cryptography different from key exchange and the other considering countermeasures to additional threats like coercibility or traffic analysis. Every section ends with a short summary or an appraisal in boldface and in the conclusions all topics of this section are briefly outlined and in an outlook we give a personal statement about the relevance of quantum cryptographic pro tocols and promising future directions of research.