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Quantum cryptography is the science of exploiting quantum mechanical properties to perform cryptographic tasks. [1] [2] The best known example of quantum cryptography is quantum key distribution, which offers an information-theoretically secure solution to the key exchange problem. The advantage of quantum cryptography lies in the fact that it ...
The first mention of Alice and Bob in the context of cryptography was in Rivest, Shamir, and Adleman's 1978 article "A method for obtaining digital signatures and public-key cryptosystems." [2] They wrote, "For our scenarios we suppose that A and B (also known as Alice and Bob) are two users of a public-key cryptosystem".
Quantum computing has significant potential applications in the fields of cryptography and cybersecurity. Quantum cryptography, which relies on the principles of quantum mechanics, offers the possibility of secure communication channels that are resistant to eavesdropping.
Google on Monday said that it has overcome a key challenge in quantum computing with a new generation of chip, solving a computing problem in five minutes that would take a classical computer more ...
Quantum location authentication was first investigated by Kent in 2002, which he called ‘quantum tagging’, resulting in a filed US patent by Kent et al. in 2007, [22] and a publication in the academic literature in 2010, [15] after a paper on position-based quantum cryptography was published by Buhrman et al. [16] There is a no-go theorem ...
Quantum key distribution (QKD) is a secure communication method that implements a cryptographic protocol involving components of quantum mechanics.It enables two parties to produce a shared random secret key known only to them, which then can be used to encrypt and decrypt messages.
Quantum messages have a finite size, measured in qubits; quantum channels have a finite channel capacity, measured in qubits per second. Quantum information, and changes in quantum information, can be quantitatively measured by using an analogue of Shannon entropy, called the von Neumann entropy.
Nexus took a step towards that goal on Monday, announcing it has raised $25 million in a Series A funding round. The round was co-led by Lightspeed Venture Partners and Pantera Capital .