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mbedtls: add Kconfig symbol CONFIG_MBEDTLS_PSA_STATIC_KEY_SLOTS

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Adding the Kconfig symbol CONFIG_MBEDTLS_PSA_STATIC_KEY_SLOTS
to allow Mbed TLS's PSA Crypto core to use static key buffers
to store key's material. This helps reducing heap memory
usage and, potentially, it also discard code implementing
heap memory management if there's no other module in the build
that makes use of it.

Signed-off-by: Valerio Setti <vsetti@baylibre.com>
This commit is contained in:
Valerio Setti 2024-10-24 14:35:53 +02:00 • committed by Benjamin Cabé
commit 2f6ea8ed77
4 changed files with 29 additions and 1 deletions
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6
doc/releases/release-notes-4.1.rst
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@ -267,6 +267,12 @@ Libraries / Subsystems
* Crypto
* The Kconfig symbol :kconfig:option:`CONFIG_MBEDTLS_PSA_STATIC_KEY_SLOTS` was
added to allow Mbed TLS to use statically allocated buffers to store key material
in its PSA Crypto core instead of heap-allocated ones. This can help reduce
(or remove, if no other component makes use of it) heap memory requirements
from the final application.
* CMSIS-NN
* FPGA