How to Protect a Signature from Being Shown to a Third Party

Autor:	Mirosław Kutyłowski, Marek Klonowski, Anna Lauks, Przemysław Kubiak
Rok vydání:	2006
Předmět:	Third party Computer science business.industry Computer security computer.software_genre Undeniable signature Signature (logic) Public-key cryptography Ring signature Digital signature Discrete logarithm business computer ElGamal encryption
Zdroj:	Trust and Privacy in Digital Business ISBN: 9783540377504 TrustBus
Popis:	Many attempts to controlling who and under which circumstances can verify our signatures have been made so far. For this purpose one can use undeniable signatures, designated confirmer signatures or designated verifier signatures. We introduce a model of new kind of signatures, called dedicated digital signatures (or dds for short). The core idea is that a designated verifier can present a standard signature of the signer derived from dds to a third party, but at the price of revealing the private key of the designated verifier or at the price of revealing the designated verifier’s signature of a particular message. Therefore the verifier will show the signature only in very special situations. We present a construction of a dds based on ElGamal signatures and its modifications that allow to obtain additional important features.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c1e0a5b1a26c9dc2086d85bb0576ae21 https://doi.org/10.1007/11824633_20 Zobrazit plný text záznamu