Manage Passwords with Keychain Access
Keychain Access: They are long gone, those days when people had to memorize just one password. We now juggle dozens of passwords for accessing our iOS devices or logging on to our Macs. They check our email, receiving messages, purchasing goods, streaming music and movies, chatting and the list goes on and on. Fortunately, your Mac can store these passwords and automatically fill them in when needed.
Since Mac OS 8.6, the Mac has managed passwords with Keychain, Apple’s password-management system. The Keychain Access application stores a wide variety of items. They include passwords for email, websites, servers, Wi-Fi networks, network shares, encrypted disk images. It can store secure notes, private keys, and certificates. Whenever you save a password, it’s stored in the Mac’s keychain, whether you’re prompted by an application or you’re saving a website’s password.
The Mac places keychain files in multiple locations, and the contents of these various keychain files are combined into Keychain Access, so that you needn’t worry about where they’re held.
If you launch Keychain Access, the window will be divided into three panes. The top-left pane lists keychains accessible to you. Below this is the Category pane where user chooses what he’d like to see: in the keychain, that’s passwords, secure notes, certificates associated with the account, encryption keys or certificates used broadly by the computer. The largest pane, to the right, displays the contents of selected category items. Except in the case of certificates, user can double-click on one of these items to open a window where the item’s attributes are shown (name, kind, associated account, website or network address, its access control.
If you’ve forgotten a password and would like to recover it, Keychain Access is the place to go. To learn the identity of a password, select All Items or Passwords in the Category pane, then find the item you want the password for and double-click it. Double-click a keychain item to locate the Show Password option. Enable the Show Password option. Next, you’ll be prompted for the password for the login keychain. Enter that and click Allow, and the password will be revealed in the Password field.
If you seek to recover website passwords and are running Safari under Mountain Lion, launch Safari, open Safari’s preferences, and click the Passwords tab. All the websites with saved passwords in Safari will appear in a list. Enable the Show Passwords option and enter your login password when prompted. Passwords will be listed to the right of each site.
You can also remove website passwords. Just select the site you want to delete and click the Remove button. To remove all remembered passwords, click Remove All.
When you first set up a user account, the login password used for that account is assigned to the login keychain, where new passwords are stored by default. User can enter the password he uses with his account to uncover a keychain item’s secrets. (If someone knows your account’s password, they can access the items in this keychain and then discover your other passwords. So if you’re concerned about that, you can change the password for the Login keychain: in Keychain Access select the login keychain and choose Edit > Change Password For Keychain “login”. You’ll be prompted to enter your current password for your user account and then enter and verify a new password).
What happens if you’ve changed the login keychain’s password and, regrettably, forgotten the new password? Apple uses the Triple Digital Encryption Security standard (3DES) to secure the keychain. It’s quite secure for everyday users. Unless you can recall your password, you’re out of luck. It’s strongly recommended to make a copy of the old keychain for safekeeping, in case you remember its password.
If you have multiple Macs, each one has its own login keychain with its own set of passwords.
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