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Bluetooth/アドレス

BD_ADDR

Top / BD_ADDR

Bluetooth Device Address

Each Bluetooth device shall be allocated a unique 48-bit Bluetooth Device Address (BD_ADDR).

構造

• 11:22:33:44::55:66
  • OUI (Organizationally Unique Identifier)
    • 11:22 : NAP
    • 33 : UAP
  • 44:55:66 : Assigned by Vendor

BLE/アドレス

• To help secure user privacy, BLE includes the following two features:
  • address randomization and cross-transport key derivation.
• アドレスのランダム化
• CTKD

• https://support.apple.com/ja-jp/guide/security/sec82597d97e/web

iOS

動作

• iOS 7以降は取得不可能
• https://developer.apple.com/library/archive/releasenotes/General/WhatsNewIniOS/Articles/iOS7.html
  • In iOS 7 and later, if you ask for the MAC address of an iOS device, the system returns the value 02:00:00:00:00:00.
  • If you need to identify the device, use the identifierForVendor? property of UIDevice instead. (Apps that need an identifier for their own advertising purposes should consider using the advertisingIdentifier property of ASIdentifierManager? instead.)

• iOS hides the MAC address of the device and generates a UUID for you.

参考

• https://developer.apple.com/forums/thread/8442
• https://github.com/don/cordova-plugin-ble-central/issues/77
• https://stackoverflow.com/questions/33166039/get-bluetooth-mac-address-on-iphone
• https://stackoverflow.com/questions/33145798/how-to-get-mac-address-from-cbperipheral-and-cbcenter

関連

• Bluetooth Core Specification/Volume 2/Part B
• MACアドレス

仕様

Bluetooth Classic/物理チャンネル

• Bluetooth Core Specification/Volume 2/Part B

BLE/物理チャンネル

• Bluetooth Core Specification/Volume 6/Part B

GAP

• Bluetooth Core Specification/Volume 3/Part C GAP

参考

• https://macaddresschanger.com/what-is-bluetooth-address-BD_ADDR