Podpisy niezaprzeczalne - podpisy z dodatkową funkcjonalnością

• Authors: Ewa Pośpiech

Title variants

EN

Undeniable Signatures - Signatures with Additional Functionality

• Languages of publication: PL

Abstracts

EN

Today, the role of digital signatures becoming more and more significant. The signature provides authentication and integrity of a message but quite often other features like additional functionality is required from the signature. Because of that the algorithms used in ordinary signing are not sufficient, they need to be special algorithms with some additional characteristics. Undeniable signatures are a form of digital signature that have two distinctive features: the verification process is interactive (the signatures cannot be verified without signer's cooperation), a disavowal protocol allows to determine whether a given signature is a forgery. These signatures can be used, for example, to protect a software against unauthorized persons. The safety of these signatures is guaranteed by techniques of modern cryptography which is based on advanced mathematical tools and computer technology. The purpose of the article is to present selected schemes (protocols) of undeniable signatures (based on discrete log systems) such as Chaum-van Antwerpen protocol, Chaum-van Antwerpen protocol protecting against disavowal and a convertible undeniable signature protocol. Main definitions and theorems are presented and all described protocols are illustrated with examples.

Keywords

PL

Modele matematyczne

EN

Mathematical models

• Publisher: Uniwersytet Ekonomiczny w Katowicach
• Journal: Studia Ekonomiczne
• Year: 2013
• Volume: 132
• Pages: 67-79

Contributors

author

Ewa Pośpiech

References

• Buchmann A.J.: Wprowadzenie do kryptografii. Wydawnictwo Naukowe PWN, Warszawa 2006.
• Menezes A.J., Oorschot P.C. van, Vanstone S.A.: Kryptografia stosowana. Wydawnictwo Naukowo-Techniczne, Warszawa 2005.
• Ross K.A., Wright C.R.B.: Matematyka dyskretna. Wydawnictwo Naukowe PWN, Warszawa 2003.
• Schneier B.: Kryptografia dla praktyków. Wydawnictwo Naukowo-Techniczne, Warszawa 2002.
• Song Y. Yan: Teoria liczb w informatyce. Wydawnictwo Naukowe PWN, Warszawa 2006.
• http://www.podpis.nordea.pl.

Identifiers

ISSN

2083-8611