| commit | 4b6f3413f7462154e1fc9767723fea06e1354e4a | [log] [tgz] |
|---|---|---|
| author | Philipp Wagner <phw@lowrisc.org> | Wed Nov 04 17:00:38 2020 +0000 |
| committer | Philipp Wagner <mail@philipp-wagner.com> | Wed Jan 13 14:58:19 2021 +0000 |
| tree | d11113bf8c183d57d91a50e9c98faa2b6b08f208 | |
| parent | 9a4f47b060130dc0b4b2107b37a5b64e528762dd [diff] |
[otbn/sw] Add end-to-end RSA test Add an end-to-end test for RSA running on OTBN. Keys of 512b, 1024b, 2048b, 3072b, and 4096b can be tested with both encryption and decryption. The encrypted data has been independently calculated and is included as golden reference. For all keys a private key file in PEM format is included to be able to reproduce and modify the reference parameters. Also included is a Python script to calculate the parameters with pycryptodome. Note that this implementation of RSA isn't secure in any way, it's only a hardware integration test. A comment at the beginning of the file highlights that. Since the test times for longer RSA keys are excessive the test contains two constants which can be used to cut down the test time: decryption can be disabled, and keys larger than 1024b can be left untested. Build and run the tests with ``` # build sw ./meson_init.sh -f ninja -C build-out # build verilator simulation fusesoc --cores-root=. run --flag=fileset_top --target=sim --setup --build lowrisc:systems:top_earlgrey_verilator # run the Verilator simulation, use the OTBN ISS (model) build/lowrisc_systems_top_earlgrey_verilator_0.1/sim-verilator/Vtop_earlgrey_verilator \ --meminit=rom,build-bin/sw/device/boot_rom/boot_rom_sim_verilator.elf \ --meminit=flash,build-bin/sw/device/tests/otbn_rsa_test_sim_verilator.elf \ +UARTDPI_LOG_uart0=- +OTBN_USE_MODEL=1 ``` Signed-off-by: Philipp Wagner <phw@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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