fe95 legacy decrypt for YLYK01YL, YLKG07YL/YLKG08YL and more

[G1K]

Encryption can be used for remotes and dimers. More details were analyzed in custom-components/ble_monitor#289
But it could not be done as in python, since crypto in node js supports only aes-ccm with auth tag for verifying the result. Many thanks to @Alx2000y for defeating this problem.

Decryption and parsing of messages was checked by me on the YLYK01YL remote control
beaconkey can be obtained using a python script:

wget https://raw.githubusercontent.com/custom-components/ble_monitor/master/custom_components/ble_monitor/ble_parser/get_beacon_key.py 
pip3 install bluepy

python3 get_beacon_key.py <MAC> <PRODUCT_ID>


#python3 get_beacon_key.py AB:CD:EF:12:34:56 959

It is suitable for the PRODUCT_ID list:

• 339: 'YLYK01YL'
• 950: 'YLKG07YL/YLKG08YL'
• 959: 'YLYB01YL-BHFRC'
• 1254: 'YLYK01YL-VENFAN'
• 1678: 'YLYK01YL-FANCL'

[gfwilliams]

Great - thanks for this!