# Quantum Cryptography Beyond Quantum Key Distribution

**Authors:** Anne Broadbent, Christian Schaffner  
**arXiv:** [1510.06120](https://arxiv.org/abs/1510.06120)  
**Date:** 2015-10-21  
**Summary page:** https://www.summarizepaper.com/en/arxiv-id/1510.06120v1/

## Key points

- Quantum cryptography harnesses quantum mechanical effects for cryptographic tasks
- Beyond quantum key distribution (QKD), other applications include:
- Quantum money
- Randomness generation
- Secure two- and multi-party computation
- Delegated quantum computation
- Impossibility of achieving quantum bit commitment
- Complexities of quantum rewinding processes
- Establishing robust security models for classical cryptographic primitives
- The review article targets cryptographers unfamiliar with quantum concepts, offering a comprehensive survey of theoretical quantum cryptography beyond QKD.
- Emphasis on unveiling constructions and constraints beyond QKD to provide a deeper understanding of diverse applications and intricacies within the field.

## Summary

In their review article titled "Quantum Cryptography Beyond Quantum Key Distribution," authors Anne Broadbent and Christian Schaffner delve into the intricate realm of quantum cryptography. This field harnesses quantum mechanical effects to execute cryptographic tasks. While quantum key distribution (QKD) stands as the most renowned application within this field, the authors shed light on numerous other uses such as quantum money, randomness generation, secure two- and multi-party computation, and delegated quantum computation. The study of quantum cryptography also extends to exploring the limitations and challenges posed by quantum adversaries. These include the inherent impossibility of achieving quantum bit commitment, the complexities surrounding quantum rewinding processes, and establishing robust quantum security models for classical cryptographic primitives. The review article targets cryptographers who may not be well-versed in quantum concepts, offering a comprehensive survey of theoretical quantum cryptography. The emphasis lies on unveiling constructions and constraints that exist beyond the scope of QKD, providing a deeper understanding of the diverse applications and intricacies within this fascinating discipline. With 44 pages and 241 references, this work serves as a valuable resource for researchers seeking to explore the frontiers of quantum cryptography beyond traditional encryption methods.