[riot-notifications] [RIOT-OS/RIOT] drivers/at86rf2xx; spi security module (AES) (#14113)
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Thu May 21 19:07:26 CEST 2020
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### Contribution description
The at86rf2xx IEEE 802.15.4 transceivers are capable to perform `AES` in hardware and support block cipher modes `ECB` and `CBC`.
This PR adds a `pseudomodule` in the `at86rf2xx` driver. You will be able to perform hardware encryption and decryption of blocks of data using `ECB` and `CBC` block ciphers. Nothing is changed from the actual driver.
Only `SPI` transceivers are supported, for now. Although for MCU integrated transceivers `atmega128rfa1` and `atmega256rfr2` it is even simpler and could be added later.
The SPI security module supports `fast SPI`, which means that you will read output block `i`, if you write input block `i + 1` to the SPI bus.
Put here the description of your contribution:
- describe which part(s) of RIOT is (are) involved
- if it's a bug fix, describe the bug that it solves and how it is solved
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### Testing procedure
I provided a test in `tests/driver_at86rf2xx_aes/`.
Test vectors are taken from: [RFC3602](https://tools.ietf.org/html/rfc3602)
Details steps to test your contribution:
- which test/example to compile for which board and is there a 'test' command
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- the expected success test output
### Issues/PRs references
Examples: Fixes #1234. See also #5678. Depends on PR #9876.
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-- Commit Summary --
* drivers/at86rf2xx: SPI AES security module
* tests/driver_at86rf2xx_aes: Test for at86rf2xx AES security module
-- File Changes --
M drivers/at86rf2xx/Makefile (6)
A drivers/at86rf2xx/aes_spi.c (432)
A drivers/at86rf2xx/include/at86rf2xx_aes.h (259)
M makefiles/pseudomodules.inc.mk (1)
A tests/driver_at86rf2xx_aes/Makefile (23)
A tests/driver_at86rf2xx_aes/main.c (230)
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