More information: http://www.windowspasswordsrecovery.com/iphone/reset-iphone-backup-password.html
After iOS 7 update, all my data lost on iPhone. When I restore my iPhone from iTunes backup, iTunes let me enter a password to restore. I don't know what the password is because I never set one when I backed up my iPhone.
However, no matter how you lost or forgotten iTunes backup password, iTunes backu password unlocker can find the password for you. Take it easy, just have a try.
