Welcome to the resource topic for 2006/248
Title:
Disguising tori and elliptic curves
Authors: Steven D. Galbraith
Abstract:Frey proposed the idea of disguising' an elliptic curve. This is a method to obtain a black box’ representation of a group. We adapt this notion to finite fields and tori and study the question of whether such systems are secure. Our main result is an algebraic attack which shows that it is not secure to disguise the torus T_2. We also show that some methods for disguising an elliptic curve are not secure. Finally, we present a method to disguise an elliptic curve which seems to resist our algebraic attack.
ePrint: https://eprint.iacr.org/2006/248
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