| commit | 4429c362900713c059fbd870db140e0058e1c0eb | [log] [tgz] |
|---|---|---|
| author | Pirmin Vogel <vogelpi@lowrisc.org> | Fri Oct 02 17:54:11 2020 +0200 |
| committer | Pirmin Vogel <vogelpi@lowrisc.org> | Tue Oct 06 14:18:35 2020 +0200 |
| tree | 8b4d9363d7b52464c798c01c829540142b5ccb95 | |
| parent | 0799dbaf84e3b7708a128a203ef66de402111f29 [diff] |
[aes] Add parameter to allow forcing all-zero masks during SCA analysis If the newly introduced SecAllowForcingMasks parameter is set to 1, the FORCE_ZERO_MASKS bit in the control register can be set to 1 to force all masks to constant 0. If at the same time, the mask share of the key is 0 (KEY_SHARE1_0 - KEY_SHARE1_7), this effectively allows to disable the masking at runtime which can be useful for SCA analysis. If the parameter is not set, the corresponding bit in the control register is tied to 0 and in addition has no effect. 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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