Modifications of ECDSA

John Malone-Lee, Nigel Smart

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

8 Citations (Scopus)


We describe two variants of ECDSA one of which is secure, in the random oracle model, against existential forgery but suffers from the notion of duplicate signatures. The second variant is also secure against existential forgery but we argue that it is likely to possess only four natural duplicate signatures. Our variants of ECDSA are analogous to the variants of DSA as proposed by Brickell \it et al. However, we show that the ECDSA variants have better exact security properties.
Translated title of the contributionModifications of ECDSA
Original languageEnglish
Title of host publicationSelected Areas in Cryptography - SAC 2002
PublisherSpringer Berlin Heidelberg
Pages1 - 12
Number of pages11
Publication statusPublished - Feb 2003

Bibliographical note

Editors: K. Nyberg and H. Heys
Publisher: Springer-Verlag


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