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Bluetooth: Host: use P256-M in ECC emulation

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When BT_SEND_ECC_EMULATION and the platform uses Mbed TLS as PSA
Crypto provider, we select the Cortex-M software optimized
implementation of the secp256r1 curve algorithms. This is much
faster than the standard support provided by Mbed TLS and it
also reduces ROM footprint.

Signed-off-by: Valerio Setti <vsetti@baylibre.com>
This commit is contained in:
Valerio Setti 2024-11-28 10:08:16 +01:00 • committed by Fabio Baltieri
commit 5790de6d6a
1 changed files with 1 additions and 0 deletions
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subsys/bluetooth/host/Kconfig
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@ -1006,6 +1006,7 @@ config BT_SEND_ECC_EMULATION
select PSA_WANT_ALG_ECDH
select PSA_WANT_KEY_TYPE_ECC_KEY_PAIR_GENERATE
select PSA_WANT_ECC_SECP_R1_256
select MBEDTLS_PSA_P256M_DRIVER_ENABLED if MBEDTLS_PSA_CRYPTO_C
select BT_LONG_WQ
depends on BT_ECC && (BT_HCI_RAW || BT_HCI_HOST)
default y if BT_CTLR && !BT_CTLR_ECDH