Protecting ECC Against Fault Attacks: The Ring Extension Method Revisited

Abstract

Due to its shorter key size, elliptic curve cryptography (ECC) is gaining more and more popularity. However, if not properly implemented, the resulting cryptosystems may be susceptible to fault attacks. Over the past few years, several techniques for secure implementations have been published. This paper revisits the ring extension method and its adaptation to the elliptic curve setting.

Keywords

• elliptic curves
• formal groups
• degenerate curves
• elliptic curve cryptosystems
• fault attacks
• countermeasures
• 14h52
• 14g50
• 94a60
• 68m15