What is the key exchange problem?

The essence of the key exchange problem stems from the challenge of securely establishing a common secret key between communicating parties. This shared key is vital for ensuring the confidentiality and integrity of their communication.

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The requirement for a secure key exchange method is particularly acute in scenarios where direct, physical exchange of keys is impractical or impossible. One such scenario is remote communication over the internet, where the distance between communicating entities precludes traditional key exchange methods.

In the realm of cryptography, the key exchange problem is a fundamental challenge that has been the subject of extensive research and development. Various techniques and protocols have been devised to address this issue, each with its own set of strengths and limitations.

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