The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Quantum digital signature (QDS) is based on the laws of quantum physics, and can provide unconditional security for signing messages between remote multi-party users. To date, different QDS protocols have been proposed and corresponding security analysis has been done. Just most security analyses are directed against signing single-bit messages, and the security cannot be ensured when signing multi-bit...