The Hive Key, 
The five hive keys and their functions are listed below.
ACTIVE KEY: a key with more functions than ordinary keys. This key is useful for HBD conversion, witness voting, and powerup/down.
MEMO KEY: This is a secret key that can only be used to view and send private messages.
OWNER KEY: The most powerful key in the hive blockchain, capable of recovering other keys and even accounts.
POSTING KEY: In the hive blockchain, this is a critical key. This key can be used to create posts, comments, upvotes, and reblogs.
MASTER KEY: Only this key will be queried throughout the password recovery process if you have forgotten your password.
THE BEST WAY TO KEEP KEYS SAFE
I keep it somewhere I can get to it at any moment. Others cannot access certain sites, such as email, Google Drive, and other services that I consider secure. If you wish to save it in the location I suggested, make sure you use the application's password as well. Perhaps someone touched your phone and tried to use it as an email client. Then, to be safe, use the application's password.
ACCOUNT RECOVERY
If your account has been lost or hacked, follow the procedures below to get it back.
Contacting the trustee is the only way to reclaim your account. Send your old key to a trustee so that they can aid you in regaining access to your account. Of course, every guardian you choose is someone you can trust, and not just anyone.
If you still have questions regarding your guardian, go to https://hiveblocks.com/@username. Follow these procedures to reclaim your account.
Visit https://reazuliqbal.com/HiveAccountRecovery/ for more information.
Then select Recover account
Carefully follow the directions. Enter your username here. You'd see a new password key that had been generated for you automatically. Keep it somewhere safe.
Select the "Get Owner Key" checkbox.
A new public owner key should be sent to you.
To send the produced public owner key to your trustee, go to step 2.
Go to the third step box. Fill in the blanks with the information that belongs there.
NB: the new password requested is the same one as in step 1.
Congratulations for recovering access to your account!
