Saved in:
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2023
|
| Subjects: | |
| Online Access: | https://arxiv.org/abs/2305.14504 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866914632735653888 |
|---|---|
| author | Schiansky, Peter Kalb, Julia Sztatecsny, Esther Roehsner, Marie-Christine Guggemos, Tobias Trenti, Alessandro Bozzio, Mathieu Walther, Philip |
| author_facet | Schiansky, Peter Kalb, Julia Sztatecsny, Esther Roehsner, Marie-Christine Guggemos, Tobias Trenti, Alessandro Bozzio, Mathieu Walther, Philip |
| contents | Digital payments have replaced physical banknotes in many aspects of our daily lives. Similarly to banknotes, they should be easy to use, unique, tamper-resistant and untraceable, but additionally withstand digital attackers and data breaches. Current technology substitutes customers' sensitive data by randomized tokens, and secures the payment's uniqueness with a cryptographic function, called a cryptogram. However, computationally powerful attacks violate the security of these functions. Quantum technology comes with the potential to protect even against infinite computational power. Here, we show how quantum light can secure daily digital payments by generating inherently unforgeable quantum cryptograms. We implement the scheme over an urban optical fiber link, and show its robustness to noise and loss-dependent attacks. Unlike previously proposed protocols, our solution does not depend on long-term quantum storage or trusted agents and authenticated channels. It is practical with near-term technology and may herald an era of quantum-enabled security. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2305_14504 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Demonstration of quantum-digital payments Schiansky, Peter Kalb, Julia Sztatecsny, Esther Roehsner, Marie-Christine Guggemos, Tobias Trenti, Alessandro Bozzio, Mathieu Walther, Philip Quantum Physics Cryptography and Security Digital payments have replaced physical banknotes in many aspects of our daily lives. Similarly to banknotes, they should be easy to use, unique, tamper-resistant and untraceable, but additionally withstand digital attackers and data breaches. Current technology substitutes customers' sensitive data by randomized tokens, and secures the payment's uniqueness with a cryptographic function, called a cryptogram. However, computationally powerful attacks violate the security of these functions. Quantum technology comes with the potential to protect even against infinite computational power. Here, we show how quantum light can secure daily digital payments by generating inherently unforgeable quantum cryptograms. We implement the scheme over an urban optical fiber link, and show its robustness to noise and loss-dependent attacks. Unlike previously proposed protocols, our solution does not depend on long-term quantum storage or trusted agents and authenticated channels. It is practical with near-term technology and may herald an era of quantum-enabled security. |
| title | Demonstration of quantum-digital payments |
| topic | Quantum Physics Cryptography and Security |
| url | https://arxiv.org/abs/2305.14504 |