Paper 2004/227
Sign Change Fault Attacks On Elliptic Curve Cryptosystems
Johannes Blömer, Martin Otto, and Jean-Pierre Seifert
Abstract
We present a new type of fault attacks on elliptic curve scalar multiplications: Sign Change Attacks. These attacks exploit different number representations as they are often employed in modern cryptographic applications. Previously, fault attacks on elliptic curves aimed to force a device to output points which are on a cryptographically weak curve. Such attacks can easily be defended against. Our attack produces points which do not leave the curve and are not easily detected. The paper also presents a revised scalar multiplication algorithm that provably protects against Sign Change Attacks.
Metadata
- Available format(s)
-
PDF PS
- Category
- Public-key cryptography
- Publication info
- Published elsewhere. Unknown where it was published
- Keywords
- elliptic curve cryptosystemfault attackssmart cards
- Contact author(s)
- martinmo @ upb de
- History
- 2004-09-11: revised
- 2004-09-09: received
- See all versions
- Short URL
- https://ia.cr/2004/227
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2004/227,
author = {Johannes Blömer and Martin Otto and Jean-Pierre Seifert},
title = {Sign Change Fault Attacks On Elliptic Curve Cryptosystems},
howpublished = {Cryptology {ePrint} Archive, Paper 2004/227},
year = {2004},
url = {https://eprint.iacr.org/2004/227}
}