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Quantum key distribution is an innovative technique to distribute encryption keys without compromise. This paper focuses on the application of this technique to achieve reliable communication in an ever-evolving and increasingly vulnerable environment. Designers of cryptosystems have three basic objectives; designing cryptographic algorithms that adequately scramble the target data, developing strong encryption keys to lock and unlock the algorithm, and securely distributing the keys between communicating devices. The advance of quantum computing technologies threatens to expose the world's most prolific key method overnight. Though quantum computing is not yet a reality, the basic principles have been proven in laboratories.
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