Bluetooth: BR: improve br_sufficient_key_size
Currently, the minimum value of encryption key size is `BT_HCI_ENCRYPTION_KEY_SIZE_MIN`. Add a new Kconfig `BT_BR_MIN_ENC_KEY_SIZE`. It is used to set the specific minimum encryption key size. The default value is `BT_SMP_MIN_ENC_KEY_SIZE`. And it can be configured if `BT_SMP_SC_ONLY` is not enabled. Use `CONFIG_BT_BR_MIN_ENC_KEY_SIZE` as minimum encryption key size in `br_sufficient_key_size`. Signed-off-by: Lyle Zhu <lyle.zhu@nxp.com>
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2 changed files with 10 additions and 1 deletions
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@ -18,6 +18,15 @@ config BT_CLASSIC
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This option enables Bluetooth BR/EDR support
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if BT_CLASSIC
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config BT_BR_MIN_ENC_KEY_SIZE
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int
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prompt "Minimum encryption key size accepted in octets" if !BT_SMP_SC_ONLY
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default BT_SMP_MIN_ENC_KEY_SIZE
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range 7 16
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help
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This option sets the minimum encryption key size accepted during pairing
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for classic.
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config BT_MAX_SCO_CONN
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int "Maximum number of simultaneous SCO connections"
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default 1
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@ -141,7 +141,7 @@ static bool br_sufficient_key_size(struct bt_conn *conn)
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return key_size == BT_HCI_ENCRYPTION_KEY_SIZE_MAX;
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}
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return key_size >= BT_HCI_ENCRYPTION_KEY_SIZE_MIN;
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return key_size >= CONFIG_BT_BR_MIN_ENC_KEY_SIZE;
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}
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bool bt_br_update_sec_level(struct bt_conn *conn)
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