QKD allows two parties connected over an

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According to Lindell, the post-quantum encryption market is still in its infancy, with many little-known names in the mix, and many organizations are wary of spending large amounts of money on systems that are not secure due to problems with quantum key distribution (QKD).

open channel to create a shared random key known only to them and use it to encrypt and decrypt messages, but QKD currently lacks a single encryption protocol, and that’s not its only problem. “In theory, QKD can provide perfectly secure key distribution, but the keys are also used for encryption. The only way to make it more secure than AES is to use a one-time pad. In addition to the huge number of keys, QKD doesn’t solve the authentication problem, and it can’t handle asymmetric encryption, which is what most commercial encryption is based on,” Lindell said.

The UK's National Cyber ​​Security Centre (NCSC) has luxembourg whatsapp data a study that examines a wide range of issues surrounding QKD, including its shortcomings and security concerns. It proposes the creation of post-quantum public key encryption technology as an alternative to QKD as a more practical and cost-effective means of protecting communications and preventing the damage that next-generation quantum computers could cause.

The paper notes that, unlike QKD, post-quantum public-key cryptography relies on classical mathematical problems that are difficult to solve even with quantum computers, while quantum cryptography is based on the principles of quantum physics. “Post-quantum public-key cryptography offers much more effective measures to mitigate the risks that quantum computers pose to communication systems,” the study says. Most public-key cryptosystems use asymmetric encryption built on complex mathematical calculations, so it may take ordinary computers years to crack encryption keys, while basic models of quantum computers can cope with them in a matter of hours. Obviously, the opportunities opening up for attackers worry information security specialists.