Toshiba and HSBC unconditionally test safe transactions with quantum metro network

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Von: Krypto News Österreich

Toshiba und BT haben ein Quanten-Metro-Netzwerk entwickelt, um Transaktionen zwischen Institutionen zu ermöglichen. HSBC wird dieses Netzwerk nutzen, um verschiedene Anwendungsfälle zu testen, darunter Finanztransaktionen, Videoanrufe und Edge-Computing. Eine der wichtigsten Anwendungen, die HSBC testen wird, ist die Quantenschlüsselverteilung (QKD). Dies ermöglicht es zwei Parteien, die voneinander getrennt sind, sicher Informationen auszutauschen. QKDs sind einmalige Verschlüsselungsschlüssel, die von beiden Parteien gleichzeitig generiert werden. Quantendaten gelten aufgrund ihrer Beschaffenheit als undurchdringbar. Jeder Versuch einer externen Partei, eine Transaktion einzusehen, abzuhören oder zu ändern, würde sofort von beiden Parteien erkannt. Allerdings gibt es technische Beschränkungen hinsichtlich der Entfernung, über die QKDs gesendet …
Toshiba and BT have developed a quantum metro network to enable transactions between institutions. HSBC will use this network to test various applications, including financial transactions, video calls and edge computing. One of the most important applications that will test HSBC is the quantum key distribution (QKD). This enables two parties that are separated from each other to certainly exchange information. QKDs are one -time encryption keys that are generated by both parties at the same time. Due to their nature, quantum data are considered impenetrable. Any attempt by an external party to view, listen or change a transaction would be recognized immediately by both parties. However, there are technical restrictions on the distance that QKDs sent ... (Symbolbild/KNAT)

toshiba and BT have developed a quantum metro network to enable transactions between institutions. HSBC will use this network to test various applications, including financial transactions, video calls and edge computing.

One of the most important applications that will test HSBC is the quantum key distribution (QKD). This enables two parties that are separated from each other to certainly exchange information. QKDs are one -time encryption keys that are generated by both parties at the same time. Due to their nature, quantum data are considered impenetrable. Any attempt by an external party to view, listen or change a transaction would be recognized immediately by both parties.

However, there are technical restrictions on the distance that QKDs can be used to send. The signal strength of the photons that transmit the data can be increased in classic data, but not with quantum data. Therefore, due to their "noisy" nature, quantum data suffer an exponential loss. Photon higher intensity could theoretically overcome these limits, but corresponding solutions are still in development.

In May 2023,

researchers in China successfully sent QKDs over a distance of 1,000 kilometers of fiber optic cables, a new world record for non-relay QKDs. However, only 62 kilometers of fiber optic cables are required for the HSBC tests with the BT-Toshiba-U-Bahn network. These combine the global headquarters of the bank in Canary Wharf with a data center in Berkshire.