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All issuesVolume 329, Issue 1IT NewsEncryption

An Explanation Of Quantum Cryptography

Search Security, Wednesday, August 6th, 2025

In this video, Informa TechTarget product marketing associate Katie Donegan explains what quantum cryptography is, how it differs from classical cryptography and how it works.

Math might not offer the security you need ... but physics might.

Classical cryptography that encrypts messages with mathematical equations is secure enough for classical computing -- but with the emergence of quantum computing, it might not be enough protection. That's where quantum cryptography comes in: It uses physics instead of math.

Here, we'll talk about why quantum cryptography is so secure. However, despite the advantages, there are still limits and challenges to quantum cryptography and quantum key distribution (QKD).

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