| commit | 9dbaa99ea784ba8b2175f0cde81d401911ecef1e | [log] [tgz] |
|---|---|---|
| author | Pirmin Vogel <vogelpi@lowrisc.org> | Fri Aug 13 13:20:32 2021 +0200 |
| committer | Pirmin Vogel <vogelpi@lowrisc.org> | Fri Sep 03 08:33:42 2021 +0200 |
| tree | f565af153c779b7b244debcf56d5fae1300d0f48 | |
| parent | fb31846fb1ad75144d049daf689082e6336229aa [diff] |
[aes] Only unmask final cipher core output This commit inserts a mux between the masked cipher core output and the data output register/feedback path to: 1. Avoid SCA leakage occuring from unmasking intermediate cipher core outputs. 2. Increase the difficulty for extracting intermediate data via FI. Signed-off-by: Pirmin Vogel <vogelpi@lowrisc.org>
OpenTitan is an open source silicon Root of Trust (RoT) project. OpenTitan will make the silicon RoT design and implementation more transparent, trustworthy, and secure for enterprises, platform providers, and chip manufacturers. OpenTitan is administered by lowRISC CIC as a collaborative project to produce high quality, open IP for instantiation as a full-featured product. See the OpenTitan site and OpenTitan docs for more information about the project.
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