| commit | 3f4e7e46559f187961622665eaa5a699fbf5afaa | [log] [tgz] |
|---|---|---|
| author | Eunchan Kim <eunchan@opentitan.org> | Wed May 26 20:36:23 2021 -0700 |
| committer | Eunchan Kim <eunchan@opentitan.org> | Thu Jun 17 06:34:09 2021 -0700 |
| tree | b28b7e407ac92dbbdd050f61568d44a83579a810 | |
| parent | 57054be3fc2d4d6155783b2383b5f4cddafa23a1 [diff] |
[sha3] Reporting SwSequence error consistently In previous design, SHA3 may or may not report the error for double process commands depending on the current SHA3 state. If SHA3 state sits in `StAbsorb` state, double `process` commands were accepted and triggered `keccak_process` twice. (It does not harm the sha3 hashing operation.) This commit introduces `processing` status bit to check more than one `process` commands while the state is in `StAbsorb`. If additional process command is received, regardless of the state, the SHA3 reports an error with the error code `ErrSha3SwControl`. Signed-off-by: Eunchan Kim <eunchan@opentitan.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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