Don't worry, this article will help to figure it out. Let's begin!
|iTunes Ask for Password|
What is iTunes Backup File
iTunes can back up your settings, Messages, Camera Roll, documents, saved games, and other data. Backups do not contain content synced to the device, such as movies, music, podcasts, and apps. Backed-up information includes purchased music, TV shows, apps, and books*; photos and video in the Camera Roll; device settings (for example, Phone Favorites, Wallpaper, and Mail, Contacts, Calendar accounts); app data; Home screen and app organization; Messages (iMessage, SMS, and MMS), ringtones, and more. Media files synced from your computer aren’t backed up, but can be restored by syncing with iTunes.
Encrypted iTunes Backups
In the iTunes Summary screen, select "Encrypt iPhone backup" if you want to encrypt the information stored on your computer when iTunes makes a backup. Encrypted backups are indicated by a padlock icon, and a password is required to restore the information to iPhone. You may want to write down the password for your backup and store it in a safe place. If you use a Mac, when you set a password you can select to store the password in the keychain. With iOS 4 and later, you can transfer the iOS keychain backup to a new device if you encrypt the backup. Warning: If you encrypt an iPhone backup in iTunes and then forget your password, you will not be able to restore from backup and your data will be unrecoverable. If you forget the password, you can continue to back up and use the device, however you will not be able to restore the encrypted backup to any device without the password. You do not need to enter the password for your backup each time you back up or sync.
Unlock iTunes Backup Password
If you cannot remember the backup password, you don't need to reset anything, just use iPhone Backup Unlocker to recover iTunes backup passowrd.
Open and Read iPhone Backup FilesiTunes backup files is not readable, nor previewable. But you still can view these file via following derectories: