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mbedtls_config: fix descriptions for PSA static key slots

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Signed-off-by: Valerio Setti <valerio.setti@nordicsemi.no>
This commit is contained in:
Valerio Setti 2024-08-13 11:08:26 +02:00
parent a7ce589fbc
commit 933b7693f4
1 changed files with 11 additions and 11 deletions
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22
include/mbedtls/mbedtls_config.h
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@ -3069,15 +3069,17 @@
/**
* \def MBEDTLS_PSA_STATIC_KEY_SLOTS
*
* Statically preallocate all key slot buffers to store volatile keys in PSA
* instead of allocating them dynamically when required. This helps reducing
* heap memory usage as well as heap management code's footprint in embedded
* devices.
* Statically preallocate memory to store keys' material in PSA instead
* of allocating it dynamically when required. This allows builds without a
* heap, if none of the enabled cryptographic implementations or other features
* require it.
* This feature affects both volatile and persistent keys which means that
* it's not possible to persistently store a key which is larger than
* MBEDTLS_PSA_STATIC_KEY_SLOT_BUFFER_SIZE.
*
* \note This feature comes with a (potentially) higher RAM usage since:
* - All the key slots are allocated no matter if they are used of not.
* - Each key slot's length is as large as the largest key type supported
* in the build.
* - Each key buffer's length is MBEDTLS_PSA_STATIC_KEY_SLOT_BUFFER_SIZE bytes.
*
* Requires: MBEDTLS_PSA_CRYPTO_C
*
@ -3886,17 +3888,15 @@
//#define MBEDTLS_PSA_KEY_SLOT_COUNT 32
/**
* \def MBEDTLS_PSA_STATIC_KEY_SLOTS
* \def MBEDTLS_PSA_STATIC_KEY_SLOT_BUFFER_SIZE
*
* Optionally define the size (in bytes) of each static key slot. If not
* Define the size (in bytes) of each static key slot when
* MBEDTLS_PSA_STATIC_KEY_SLOTS is set. If not
* explicitly defined then it's automatically set to hold the maximum
* asymmetric PSA key enabled in the build (through PSA_WANT_xxx symbols).
* If required by the application this parameter can be set to higher values
* in order to store larger objects (ex: raw keys), but please note that this
* will increase RAM usage.
*
* Requires: MBEDTLS_PSA_STATIC_KEY_SLOTS
*
*/
//#define MBEDTLS_PSA_STATIC_KEY_SLOT_BUFFER_SIZE 256