Defining security in quantum key distribution with Carla Ferradini, Martin Sandfuchs, and Renato Renner The security of quantum key distribution (QKD) is quantified by a parameter ε >0, which—under ...

In the never-ending arms race between secret-keepers and code-breakers, the laws of quantum mechanics seemed to have the potential to give secret-keepers the upper hand. A technique called quantum ...

Qastle Wallet responds to Bitcoin 2026 criticism, addressing quantum risk, post-quantum cryptography, true entropy, and the ...

In my previous article/video how does encryption work? I wrote about the principles of encryption starting with the Caesar cipher and following the development of cryptography through to the modern ...

Data drives business, and it must be protected. Cybersecurity is an ongoing, ever-evolving challenge for organizations across industries—and it’s about to become even more complex as the age of ...

Members can download this article in PDF format. In our day-to-day lives, the use of cryptography is everywhere. For example, we use it to securely send passwords over vast networks for online ...