In an article published in the Journal of Medical Imaging and Computer Assessments (JMICA), researchers from the University of Guelph and the University at Buffalo, along with the University’s Center for Quantum Computation, discuss a novel technique for the creation of digital signatures.
The technique is based on the concept of quantum information, which describes the properties of a physical system in which information is encoded in a quantum number.
The paper describes how this approach to digital signatures can be used to create digital signatures that are digitally signed in the physical world, as well as digitally signed at rest in the brain.
“The key to the process is the use of the classical digital signal processing (DSP) technique that we developed,” said Dr. Christopher Gulland, professor of electrical engineering and computer science at the University.
“The digital signature is created by applying a series of quantum-state transitions to a digital signal.”
The paper shows that the classical DSP technique can be applied to digital signals created by the same process that converts physical objects into digital images, and that this conversion can be performed by an individual.
In this way, the researchers demonstrated that the digital signature could be created in an individual’s brain, and it was also demonstrated that this process could be applied in a brain-computer interface (BCI), a type of brain-machine interface that allows users to interact with a computer using brain activity.
“In the future, the digital signatures we create could be useful for creating and signing the electronic signatures of other brain-imaging systems,” said Professor Gullan.
The work was supported by the Canadian Institutes of Health Research.###The article will appear in the November 2017 issue of JMICA.