Side Channel Attacks Database
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Secure FPGA Circuits Using Controlled Placement and Routing |
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Pengyuan Yu, Patrick Schaumont, |
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CODES+ISSS 2007 |
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| Abstract: |
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In current Field-Programmable-Logic Architecture (FPGA) design flows, it is very hard to control the routing of submodules. It is thus very hard to make an identical copy of an existing circuit within the same FPGA fabric. We have solved this problem in a way that still enables us to modify the logic function of the copied sub-module. Our technique has important applications in the design of side-channel resistant implementations in FPGA. Starting from an existing single-ended design, we are able to create a complementary circuit. The resulting overall circuit
strongly reduces the power-consumption-dependent information leaks. We show that the direct mapping of a secure ASIC circuit-style in an FPGA does not preserve the same level of security, unless our symmetrical routing technique is employed. We demonstrate our approach on an FPGA prototype of a cryptographic design, and show through power-measurements followed by side-channel power analysis that secure logic implemented with our
approach is resistant whereas non-routing-aware directly mapped circuits can be successfully attacked. |
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