Bluetooth: controller: Remove ECDH implementation

These operations are now implemented by the PSA API.

Signed-off-by: Gordon Klaus <[email protected]>

Author: gordonklaus

doc/nrf/releases_and_maturity/releases/release-notes-changelog.rst

@@ -190,6 +190,8 @@ Bluetooth® LE
   * An issue where a flash operation executed on the system workqueue might result in ``-ETIMEDOUT``, if there is an active Bluetooth LE connection.
   * An issue where Bluetooth applications built with the ``nordic-bt-rpc`` snippet (in the :ref:`ble_rpc` configuration) did not work on the nRF54H20 devices due to incorrect memory mapping.
 
+* Removed the HCI_LE_Read_Local_P-256_Public_Key and HCI_LE_Generate_DHKey commands emulation from HCI driver.
+
 Bluetooth Mesh
 --------------
 

samples/nrf_rpc/protocols_serialization/server/Kconfig

@@ -60,9 +60,6 @@ endif # LOG
 
 if SOC_NRF54L15
 
-config BT_CTLR_ECDH
-	default n
-
 config BT_LONG_WQ_STACK_SIZE
 	default 2048
 

samples/suit/recovery/sysbuild/hci_ipc.conf

@@ -48,7 +48,6 @@ CONFIG_BT_CTLR_CRYPTO=n
 CONFIG_ENTROPY_GENERATOR=y
 
 CONFIG_BT_CTLR_LE_ENC=n
-CONFIG_BT_CTLR_ECDH=n
 CONFIG_BT_CTLR_EXT_REJ_IND=n
 CONFIG_BT_CTLR_CONN_RSSI=n
 CONFIG_BT_CTLR_FILTER_ACCEPT_LIST=n

subsys/bluetooth/controller/CMakeLists.txt

@@ -17,21 +17,11 @@ zephyr_library_sources_ifdef(
   crypto.c
 )
 
-zephyr_library_sources_ifdef(
-  CONFIG_BT_CTLR_ECDH
-  ecdh.c
-)
-
 zephyr_library_sources_ifdef(
   CONFIG_BT_CTLR_SDC_CS_MULTIPLE_ANTENNA_SUPPORT
   cs_antenna_switch.c
 )
 
-zephyr_library_link_libraries_ifdef(
-  CONFIG_BT_CTLR_ECDH_LIB_OBERON
-  nrfxlib_crypto
-)
-
 zephyr_library_link_libraries(subsys__bluetooth)
 
 zephyr_include_directories(.)

subsys/bluetooth/controller/Kconfig

@@ -361,40 +361,6 @@ config BT_CTLR_FAL_SIZE
 	help
 	  Size of the Filter Accept List.
 
-if BT_CTLR_ECDH
-choice BT_CTLR_ECDH_LIB
-	prompt "SoftDevice Controller ECDH library"
-
-config BT_CTLR_ECDH_LIB_OBERON
-	select NRF_OBERON
-	depends on !SOC_SERIES_BSIM_NRFXX
-	bool "nRF Oberon (SW)"
-
-config BT_CTLR_ECDH_LIB_TINYCRYPT
-	select TINYCRYPT
-	select TINYCRYPT_ECC_DH
-	bool "Tinycrypt"
-
-endchoice
-
-config BT_CTLR_ECDH_STACK_SIZE
-	int
-	default 900 if BT_CTLR_ECDH_LIB_OBERON
-	default 1200 if BT_CTLR_ECDH_LIB_TINYCRYPT
-	help
-	  Size of the ECDH processing thread stack.
-
-config BT_CTLR_ECDH_IN_MPSL_WORK
-	bool "ECDH processing in MPSL workqueue"
-	depends on BT_CTLR_ECDH_LIB_OBERON
-	default y if !BT_SMP
-	help
-	  Run the ECDH processing in the MPSL workqueue instead of in a
-	  dedicated pre-emptible thread.
-	  This saves RAM at the cost of delaying MPSL work.
-
-endif # BT_CTLR_ECDH
-
 config BT_CTLR_SDC_EVENT_TRIGGER
 	bool "Event Trigger"
 	help