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component/bt: disable Secure Connections(Host Supported) of classic Bluetooth to workaround AES encryption issue in controller

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1. ESP32 is found to suffer from AES encryption start/resume failure with specific device. Therefore temporarily disable BR/EDR Secure Connections for a workaround
2. BR/EDR Secure Connections is a feature for BT Classic introduced in Bluetooth 4.1. This change disables the setting of Secure Connections(Host Supported), and will result in the use of legacy authentication instead of secure authentication, and E0 encryption(legacy) instead of AES-CCM encryption. BLE security procedures are not affected.
This commit is contained in:
wangmengyang 2017-12-28 14:51:19 +08:00
parent 7d0d2854d3
commit 1bbd67f7d7
1 changed files with 2 additions and 1 deletions
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3
components/bt/bluedroid/include/bt_target.h
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@ -647,7 +647,8 @@
/* 4.1/4.2 secure connections feature */
#ifndef SC_MODE_INCLUDED
#define SC_MODE_INCLUDED TRUE
// Disable AES-CCM (BT 4.1) for BT Classic to workaround controller AES issue. E0 encryption (BT 4.0) will be used.
#define SC_MODE_INCLUDED FALSE
#endif
/* Used for conformance testing ONLY */