Explore the cutting-edge field of quantum cryptography in this 45-minute conference talk. Delve into the technical aspects, future applications, and potential threats of this revolutionary technology. Gain insights into authentication codes, rewinding techniques, and the broader context of quantum cryptography. Learn about the motivations behind its development and its real-world applications. Engage with the content through a comprehensive overview that covers introduction, technical results, and future work in the field. Understand the unique threat models associated with quantum cryptography and how they shape its implementation.