Abstract
Quantum key distribution from satellites becomes particularly valuable when it can be used on a large network and on-demand to provide a symmetric encryption key to any two nodes. A constellation model is described which enables QKD-derived encryption keys to be established between any two ground stations with low latency. This is achieved through the use of low earth orbit, trusted-node QKD satellites which create a buffer of keys with the ground stations they pass over, and geostationary relay satellites to transfer secure combinations of the keys to the ground stations. Regional and global network models are considered and the use of inter-satellite QKD links for balancing keys is assessed.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the International Astronautical Congress, IAC |
| Number of pages | 12 |
| Volume | 2019-October |
| Publication status | Published - 2019 |
| Event | 70th International Astronautical Congress, IAC 2019 - Washington, United States Duration: 21 Oct 2019 → 25 Oct 2019 Conference number: 70 http://www.iafastro.org/publications/iac-papers/ |
Publication series
| Name | Proceedings of the International Astronautical Congress, IAC |
|---|---|
| Publisher | International Astronautical Federation, IAF |
| ISSN (Print) | 0074-1795 |
Conference
| Conference | 70th International Astronautical Congress, IAC 2019 |
|---|---|
| Abbreviated title | IAC 2019 |
| Country/Territory | United States |
| City | Washington |
| Period | 21/10/19 → 25/10/19 |
| Other | The proceedings will be provided to all participants on the first day of the Congress. |
| Internet address |
Keywords
- BB84
- Constellations
- Inter-satellite link
- LEO
- QKD
- Quantum cryptography
- Satellites
- Trusted node