Abstract
Quantum candies (qandies) represent a type of pedagogical simple model that describes many concepts from quantum information processing (QIP) intuitively without the need to understand or make use of superpositions and without the need of using complex algebra. One of the topics in quantum cryptography that has gained research attention in recent years is quantum digital signatures (QDS), which involve protocols to securely sign classical bits using quantum methods. In this paper, we show how the “qandy model” can be used to describe three QDS protocols in order to provide an important and potentially practical example of the power of “superpositionless” quantum information processing for individuals without background knowledge in the field.
Highlights
Quantum information processing (QIP) has been an intensively studied field in the academia ever since Feynman originally proposed the idea of quantum computing in 1982 [1] and to this day
We refer here to the random and pre-shared pad as the OTP, and we present a signature algorithm invented by WDKA [9], which we name one-time pad signature (OTP-S)
We discussed the topic of digital signatures and the qandy model proposed by Jacobs
Summary
Quantum information processing (QIP) has been an intensively studied field in the academia ever since Feynman originally proposed the idea of quantum computing in 1982 [1] and to this day. In 2001, Gottesman and Chuang [5] first proposed the notion of “Quantum Digital Signatures” Their general idea was to use qubits instead of classical bits to sign the message, potentially achieving information-theoretically secure signature protocols, similar to QKD protocols, such as [6]. The “Qandy Model” abandons the notion of quantum bits (qubits) in favor of “Quantum Candies” (qandies)—mystical candies that, to classical bits, only have a discrete set of possible states, but unlike classical bits do behave essentially “quantumly” It is shown and discussed in [12,13], that many concepts from QIP, and especially quantum cryptographic protocols, can be interpreted and defined in the qandy model.
Sign-in/Register to view highlights & summary 
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call