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CONFIG_BT_TINYCRYPT_ECC
¶
Emulate ECDH in the Host using TinyCrypt library
Type: bool
Help¶
If this option is set TinyCrypt library is used for emulating the
ECDH HCI commands and events needed by e.g. LE Secure Connections.
In builds including the BLE Host, if not set the controller crypto is
used for ECDH and if the controller doesn't support the required HCI
commands the LE Secure Connections support will be disabled.
In builds including the HCI Raw interface and the BLE Controller, this
option injects support for the 2 HCI commands required for LE Secure
Connections so that Hosts can make use of those. The option defaults
to enabled for a combined build with Zephyr's own controller, since it
does not have any special ECC support itself (at least not currently).
Direct dependencies¶
BT_ECC
&& (BT_HCI_RAW
|| BT_HCI_HOST
) && BT_HCI
&& BT
(Includes any dependencies from ifs and menus.)
Default¶
y if
BT_CTLR
&& !BT_CTLR_ECDH
Symbols selected by this symbol¶
Kconfig definition¶
At <Zephyr>/subsys/bluetooth/host/Kconfig:576
Included via <Zephyr>/Kconfig:8
→ <Zephyr>/Kconfig.zephyr:34
→ <Zephyr>/subsys/Kconfig:9
→ <Zephyr>/subsys/bluetooth/Kconfig:306
Menu path: (Top) → Sub Systems and OS Services → Bluetooth → Enable ECDH key generation support
config BT_TINYCRYPT_ECC
bool "Emulate ECDH in the Host using TinyCrypt library"
default y if BT_CTLR && !BT_CTLR_ECDH
select TINYCRYPT
select TINYCRYPT_ECC_DH
depends on BT_ECC && (BT_HCI_RAW || BT_HCI_HOST) && BT_HCI && BT
help
If this option is set TinyCrypt library is used for emulating the
ECDH HCI commands and events needed by e.g. LE Secure Connections.
In builds including the BLE Host, if not set the controller crypto is
used for ECDH and if the controller doesn't support the required HCI
commands the LE Secure Connections support will be disabled.
In builds including the HCI Raw interface and the BLE Controller, this
option injects support for the 2 HCI commands required for LE Secure
Connections so that Hosts can make use of those. The option defaults
to enabled for a combined build with Zephyr's own controller, since it
does not have any special ECC support itself (at least not currently).
(The ‘depends on’ condition includes propagated dependencies from ifs and menus.)