1. You can check the value of binary Md5 like this:
     md5 Tronlink_official_3.8.3_20201113215956.apk

2. You can check the signature by running:
     openssl rsautl -verify -inkey tronlink_android_pubkey.pem -pubin -in Tronlink_official_sign.dat

3. download tronlink_android_pubkey.pem
     https://github.com/TRON-US/tronlink-sign