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A secure communication technique called the quantum key distribution system (QKD) uses quantum mechanical elements to implement a cryptographic protocol. It allows two parties to generate a secret shared key that is only known to them and can be used to encrypt and decrypt messages.
Since it is the most well-known example of a quantum cryptographic challenge, it is frequently referred to wrongly as quantum cryptography.
The capability of the two communicating users to identify the existence of any outside entity attempting to obtain the key is a crucial and distinctive feature of quantum key distribution. This is due to a fundamental principle of quantum mechanics: any measurement of a quantum system affects it.
The key must be measured in some way for a third party to try to eavesdrop on it, which introduces detectable irregularities. A communication system that detects eavesdropping can be developed by using quantum superpositions or quantum entanglement and transferring information in quantum states.
A key that is guaranteed to be safe can be generated if the level of eavesdropping is below a predetermined threshold (i.e., the eavesdropper has no knowledge about it); otherwise, no secure key is possible, and communication is terminated.
In contrast to traditional public key cryptography, which depends on the computational complexity of specific mathematical functions and cannot provide any mathematical proof as to the actual complexity of reversing the one-way functions used, quantum key distribution relies on the principles of quantum mechanics to ensure its security.
Based on information theory and forward secrecy, QKD has provable security. The fundamental disadvantage of quantum key distribution is that it often requires a trusted classical communication link.
In contemporary cryptography, having an authenticated classical channel denotes the exchange of either public keys with a high enough level of security or symmetric keys with a sufficient length.
Requiring the Galois/Counter Mode of the Advanced Encryption Standard, for example, one can in reality accomplish authenticated and adequately secure communications without using QKD. QKD costs many times as much to perform the same task as a stream cipher.
The Global Quantum Key Distribution System market accounted for $XX Billion in 2023 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2024 to 2030.
Clavi’s XG, a quantum key distribution system, was introduced by ID Qu antique (IDQ), the industry pioneer in quantum cybersecurity solutions (IQT).
In order to give businesses and governments the highest degree of trust for future-proof data protection, it expands the XG Series with higher key throughput and a longer distance range. Additionally, it serves as a platform for a larger customer base to access “QKD as a Service.”
