macOS dual boot Bluetooth

plutil -convert xml1 -o - /Library/Preferences/com.apple.Bluetooth.plist plutil -convert xml1 -o - /private/var/root/Library/Preferences/com.apple.bluetoothd.plist

Get system Bluetooth devices

system_profiler -xml -detaillevel full SPBluetoothDataType

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<array>
	<dict>
		<key>_SPCommandLineArguments</key>
		<array>
			<string>/usr/sbin/system_profiler</string>
			<string>-nospawn</string>
			<string>-xml</string>
			<string>SPBluetoothDataType</string>
			<string>-detailLevel</string>
			<string>full</string>
		</array>
		<key>_SPCompletionInterval</key>
		<real>0.056383967399597168</real>
		<key>_SPResponseTime</key>
		<real>0.084382891654968262</real>
		<key>_dataType</key>
		<string>SPBluetoothDataType</string>
		<key>_detailLevel</key>
		<integer>-1</integer>
		<key>_items</key>
		<array>
			<dict>
				<key>controller_properties</key>
				<dict>
					<key>controller_address</key>
					<string>F0:18:98:3E:E7:A8</string>
					<key>controller_chipset</key>
					<string>BCM_4364B0</string>
					<key>controller_discoverable</key>
					<string>attrib_off</string>
					<key>controller_firmwareVersion</key>
					<string>v117 c4433</string>
					<key>controller_productID</key>
					<string>0x0001</string>
					<key>controller_state</key>
					<string>attrib_on</string>
					<key>controller_supportedServices</key>
					<string>0x382039 &lt; HFP AVRCP A2DP HID Braille AACP GATT Serial &gt;</string>
					<key>controller_transport</key>
					<string>UART</string>
					<key>controller_vendorID</key>
					<string>0x004C (Apple)</string>
				</dict>
				<key>device_connected</key>
				<array>
					<dict>
						<key>Inflorescence</key>
						<dict>
							<key>device_address</key>
							<string>C4:14:11:03:70:9A</string>
							<key>device_firmwareVersion</key>
							<string>1.0.7</string>
							<key>device_minorType</key>
							<string>Keyboard</string>
							<key>device_productID</key>
							<string>0x026C</string>
							<key>device_services</key>
							<string>0x800020 &lt; HID ACL &gt;</string>
							<key>device_vendorID</key>
							<string>0x004C</string>
						</dict>
					</dict>
					<dict>
						<key>MX Master 3</key>
						<dict>
							<key>device_address</key>
							<string>F5:A0:1B:CA:1E:33</string>
							<key>device_batteryLevelMain</key>
							<string>100 %</string>
							<key>device_firmwareVersion</key>
							<string>MPM19.01_0015</string>
							<key>device_minorType</key>
							<string>Mouse</string>
							<key>device_productID</key>
							<string>0xB023</string>
							<key>device_services</key>
							<string>0x400000 &lt; BLE &gt;</string>
							<key>device_vendorID</key>
							<string>0x046D</string>
						</dict>
					</dict>
				</array>
				<key>device_not_connected</key>
				<array>
					<dict>
						<key>Echidna</key>
						<dict>
							<key>device_address</key>
							<string>50:DE:06:21:93:CB</string>
						</dict>
					</dict>
					<dict>
						<key>Grasshopper</key>
						<dict>
							<key>device_address</key>
							<string>94:B0:1F:76:D7:C8</string>
						</dict>
					</dict>
				</array>
			</dict>
		</array>
		<key>_name</key>
		<string>SPBluetoothDataType</string>
		<key>_parentDataType</key>
		<string>SPHardwareDataType</string>
		<key>_properties</key>
		<dict>
			<key>_name</key>
			<dict>
				<key>_detailLevel</key>
				<string>-1</string>
				<key>_isColumn</key>
				<string>YES</string>
				<key>_isOutlineColumn</key>
				<string>YES</string>
				<key>_order</key>
				<string>0</string>
			</dict>
			<key>controller_address</key>
			<dict>
				<key>_detailLevel</key>
				<string>0</string>
				<key>_order</key>
				<string>2</string>
			</dict>
			<key>controller_name</key>
			<dict>
				<key>_detailLevel</key>
				<string>1</string>
				<key>_order</key>
				<string>1</string>
			</dict>
			<key>controller_properties</key>
			<dict>
				<key>_detailLevel</key>
				<string>-1</string>
				<key>_order</key>
				<string>1</string>
			</dict>
			<key>controller_state</key>
			<dict>
				<key>_detailLevel</key>
				<string>-1</string>
				<key>_order</key>
				<string>3</string>
			</dict>
			<key>device_address</key>
			<dict>
				<key>_detailLevel</key>
				<string>0</string>
				<key>_order</key>
				<string>1</string>
			</dict>
			<key>device_connected</key>
			<dict>
				<key>_detailLevel</key>
				<string>-1</string>
				<key>_order</key>
				<string>2</string>
			</dict>
			<key>device_productID</key>
			<dict>
				<key>_detailLevel</key>
				<string>0</string>
				<key>_order</key>
				<string>4</string>
			</dict>
			<key>device_vendorID</key>
			<dict>
				<key>_detailLevel</key>
				<string>0</string>
				<key>_order</key>
				<string>3</string>
			</dict>
			<key>devices_list</key>
			<dict>
				<key>_detailLevel</key>
				<string>-1</string>
				<key>_order</key>
				<string>100</string>
			</dict>
			<key>volumes</key>
			<dict>
				<key>_detailLevel</key>
				<string>0</string>
			</dict>
		</dict>
		<key>_timeStamp</key>
		<date>2023-02-01T21:32:03Z</date>
		<key>_versionInfo</key>
		<dict>
			<key>com.apple.SystemProfiler.SPBluetoothReporter</key>
			<string>1</string>
		</dict>
	</dict>
</array>
</plist>

Public device_address: security find-generic-password -a "Public {device_address}" -s BluetoothLE -w Random device_address: security find-generic-password -a "Random {device_address}" -s BluetoothLE -w

Inflorescence C4:14:11:03:70:9A (c4141103709a, not BLE/BTHLE):

# See also /private/var/root/Library/Preferences/com.apple.bluetoothd.plist

# security find-generic-password -a "Public C4:14:11:03:70:9A" -s BluetoothLE -w | xxd -r -p
security: SecKeychainSearchCopyNext: The specified item could not be found in the keychain.

# security find-generic-password -a "Random C4:14:11:03:70:9A" -s BluetoothLE -w | xxd -r -p
security: SecKeychainSearchCopyNext: The specified item could not be found in the keychain.

# security find-generic-password -a "C4:14:11:03:70:9A" -s MobileBluetooth -w | xxd -r -p
# Same as get the password in KeyChain app for "MobileBluetooth" "location" and "C4:14:11:03:70:9A" account
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
	<key>LinkKey</key>
	<string>BE-D3-24-C4-1B-6E-62-DD-3D-F9-C3-4E-42-60-8A-2E</string>
	<key>LinkKeyType</key>
	<string>Authenticated</string>
	<key>LocalAddress</key>
	<string>F0:18:98:3E:E7:A8</string>
</dict>
</plist>

MX Master 3 F5:A0:1B:CA:1E:33 (f5a01bca1e36 et f5a01bca1e33 ? BLE/BTHLE):

# See also /private/var/root/Library/Preferences/com.apple.bluetoothd.plist

security find-generic-password -a "Public F5:A0:1B:CA:1E:33" -s BluetoothLE -w | xxd -r -p
security: SecKeychainSearchCopyNext: The specified item could not be found in the keychain.

# security find-generic-password -a "Random F5:A0:1B:CA:1E:33" -s BluetoothLE -w | xxd -r -p
# Same as get the password in KeyChain app for "BluetoothLE" "location" and "Random F5:A0:1B:CA:1E:33" account
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
	<key>Local Encryption</key>
	<dict>
		<key>Long-term Key</key>
		<data>
		ke/BOpl1khoz1kVqE4RtHQ==
		</data>
		<key>Long-term Key Length</key>
		<data>
		EA==
		</data>
		<key>Long-term Key Type</key>
		<data>
		Aw==
		</data>
	</dict>
	<key>Remote Encryption</key>
	<dict>
		<key>Long-term Key</key>
		<data>
		ke/BOpl1khoz1kVqE4RtHQ==
		</data>
		<key>Long-term Key Length</key>
		<data>
		EA==
		</data>
	</dict>
	<key>Remote IRK</key>
	<data>
	Yyy4W8H2JqinJBCtrin7hw==
	</data>
</dict>
</plist>

Example to install Inflorescence (Apple Magic Keyboard):

Windows Registry Editor Version 5.00

; On macOS, disconnect the device first to get that file from Hackintool
; Data from LinkKey (pairing key, changes after each new/re connection)
; On Windows, in PowerShell with administrator rights:
; .\PsExec64.exe -s -i regedit "$PWD\Inflorescence.reg"

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\BTHPORT\Parameters\Keys\f018983ee7a8]
;"c4141103709a"=hex:be,d3,24,c4,1b,6e,62,dd,3d,f9,c3,4e,42,60,8a,2e
"c4141103709a"=hex:54,bb,b0,b6,49,5d,1b,1c,24,c7,5f,0a,e3,b8,31,ac

Example of data you get with MX Master 3 (Logitech) and other BT LT devices:

Windows Registry Editor Version 5.00

; .\PsExec64.exe -s -i regedit /e "$PWD\MX Master 3.reg" "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\BTHPORT\Parameters\Keys"

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\BTHPORT\Parameters\Keys]

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\BTHPORT\Parameters\Keys\f018983ee7a8]
"MasterIRK"=hex:97,cd,3a,69,fb,6f,54,79,29,83,86,ab,bb,bb,58,c8

; MX Master 3 - Channel 1
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\BTHPORT\Parameters\Keys\f018983ee7a8\f5a01bca1e33]
"LTK"=hex:91,ef,c1,3a,99,75,92,1a,33,d6,45,6a,13,84,6d,1d
"KeyLength"=dword:00000010
"IRK"=hex:87,fb,29,ae,ad,10,24,a7,a8,26,f6,c1,5b,b8,2c,63
"Address"=hex(b):33,1e,ca,1b,a0,f5,00,00
"AddressType"=dword:00000001
"MasterIRKStatus"=dword:00000001
"AuthReq"=dword:0000002d

; MX Master 3 - Channel 2
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\BTHPORT\Parameters\Keys\f018983ee7a8\f5a01bca1e36]
"LTK"=hex:e0,78,b1,f5,80,a3,a5,63,0c,30,71,d3,fe,5f,98,4e
"KeyLength"=dword:00000010
"ERand"=hex(b):00,00,00,00,00,00,00,00
"EDIV"=dword:00000000
"IRK"=hex:be,32,7e,de,cc,6a,8b,64,d6,d3,8a,ee,4f,25,44,53
"Address"=hex(b):36,1e,ca,1b,a0,f5,00,00
"AddressType"=dword:00000001
"MasterIRKStatus"=dword:00000000
"AuthReq"=dword:0000002d

Example to install MX Master 3 (Logitech):

Windows Registry Editor Version 5.00

; On macOS, see below
; On Windows, in PowerShell with administrator rights:
; .\PsExec64.exe -s -i regedit "$PWD\MX Master 3.reg"

; MX Master 3 - Channel 1
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\BTHPORT\Parameters\Keys\f018983ee7a8\f5a01bca1e33]
"ERand"=hex(b):00,00,00,00,00,00,00,00
"EDIV"=dword:00000000
"MasterIRKStatus"=dword:00000000

I think you'd better try using remote encryption values, including LTK, EDIV, ERAND and IRK. Make sure in Windows Registry the address of ...\Keys\Devices and ...\Keys\hub's address\keyboard address are the same. And don't forget to also check whether the address value of ...\Keys\hub's address\keyboard address\Address matches the keyboard address.

The content of this tree is only visible for SYSTEM user (via psexec) HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\BTHPORT\Parameters\Keys

List of devices (see Name) Ordinateur\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\BTHPORT\Parameters\Devices\{device_mac_address} where {device_mac_address} could be c4141103709a

One is LE legacy pairing, which may change IRK, LTK, ERAND, EDVI and CSRK values. The other is LE Secure Connections, which changes IRK and CSRK.

LTK, RAND, IRK, Address and EDIV need to be changed. They're respectively LTK, ERand, IRK, Address and EDIV from the reg file, nothing needs to be endian swapped except for the EDIV (as an example, "EDIV"=dword:000080b4 in the reg file means the macOS EDIV is b480) and the Address (as an example, "Address"=hex(b):46,78,f9,ba,1a,db,00,00 in the reg file means the macOS Address is db1abaf9 7846). — https://github.com/digitalbirdo/BT-LinkkeySync/issues/12#issue-345657850

to encode from plist base64 to reg format REG_BINARY: echo -n "hex:"; echo -n 'ke/BOpl1khoz1kVqE4RtHQ==' | base64 -d | hexdump -e '/1 "%02x,"' | head -c-1 to encode from plist base64 to reg format REG_DWORD: echo -n "dword:"; echo -n 'EA==' | base64 -d | hexdump -e '/1 "%08d"' -n 1 to encode from plist base64 to reg format REG_BINARY (reverse): echo -n "hex:"; echo -n 'Yyy4W8H2JqinJBCtrin7hw==' | base64 -d | xxd -p -c1 | tac | xxd -p -r | hexdump -e '/1 "%02x,"' | head -c-1 see also echo "obase=10; ibase=16; 07468FA698ABB40E" | bc and od

controller_address: Bluetooth adapter MAC address, hexdec (ex: f018983ee7a8)
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\BTHPORT\Parameters\Keys\{controller_address}
- MasterIRK: ?? this can be ignored
- HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\BTHPORT\Parameters\Keys\{controller_address}\{device_address}
  - LTK: "Remote Encryption: Long-term Key", format: REG_BINARY, ex: hex:e0,78,b1,f5,80,a3,a5,63,0c,30,71,d3,fe,5f,98,4e
  - KeyLength: "Remote Encryption : Long-term Key Length", format: REG_DWORD, ex: dword:00000010
  - ERand: "Random Number" (RAND), format: REG_QWORD, ex: hex(b):00,00,00,00,00,00,00,00
  - EDIV: "Encrypted Diversifier", format: REG_DWORD, ex: dword:00000000
  - IRK: "Remote IRK" "Identity Resolving Key", format: REG_BINARY is reversed hex (vs macOS), ex: hex:87,fb,29,ae,ad,10,24,a7,a8,26,f6,c1,5b,b8,2c,63
  - Address: MAC address of the device, format: REG_QWORD, , ex: hex(b):36,1e,ca,1b,a0,f5,00,00 (for f5a01bca1e36 as device_address)
  - AddressType: ??, format: REG_DWORD, ex: dword:00000001
  - MasterIRKStatus: ??, format: REG_DWORD, ex: dword:00000000 or dword:00000001, related with MasterIRK?
  - AuthReq: ??, format: REG_DWORD, ex: dword:0000002d
  - SLTK: "Slave Long Term Key"

If a device don't want to connect or not work a expect (ex. for a keyboard, no keys works) try to pair again (on one of the OS or others), then copy the keys again on the other OS.

Windows Registry - Wikipedia
https://www.reddit.com/r/hackintosh/comments/p5ost3/macos_monterey_and_windows_bluetooth_pairing/
https://github.com/digitalbirdo/BT-LinkkeySync/issues/12#issuecomment-988789311
https://github.com/digitalbirdo/BT-LinkkeySync/issues/12#issuecomment-989436271
https://web.archive.org/web/20220809160033/https://averylarsen.com/posts/keeping-bluetooth-devices-paired-between-linux-and-windows/
https://web.archive.org/web/20230201215559/https://bbs.pcbeta.com/viewthread-1800655-1-1.html
https://github.com/spxak1/weywot/blob/9065341be5a8563ab6796388811cf2b063901afb/guides/bt_dualboot.md
fedora - Dual Boot Bluetooth LE (low energy) device pairing - Unix & Linux Stack Exchange
https://github.com/x2es/bt-dualboot/
lietxia/BT-LinkkeySync: Scripts to synchronize bluetooth link keys from mac OSX to windows
PowerShell script for dumping Bluetooth keys (e.g. for importing into Linux)

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