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Modifications of ECDSA

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Original languageEnglish
Title of host publicationSelected Areas in Cryptography - SAC 2002
Publisher or commissioning bodySpringer Berlin Heidelberg
Pages1 - 12
Number of pages11
DatePublished - Feb 2003


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.

Additional information

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

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