Differential Fault Analysis

نویسنده

Jörn-Marc Schmidt

چکیده

This report presents the results of the Differential Fault Analysis (DFA) Project. The project was funded by Secure Business Austria (SBA) and A-SIT. Its objective was to perform basic steps in the field of fault injection. The effect of faults was investigated in theory as well as in practice. The first part of this report concentrates on theoretical fault models. New fault attacks on public key cryptography are presented. The second part deals with practical fault injection. Methods to inject faults can be divided into three different groups: noninvasive, semi-invasive and invasive attacks. This report focuses on semi-invasive methods. Therefore, as first step the decapsulation of packages is shown. The second step is to inject faults using laser diodes and electromagnetic fields. It is demonstrated that fault injection is possible with low cost equipment.

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