I know as a Network professional I should never forget a WPA key. Docs Docs Docs. But tonight I was setting up someone else ‘s computer and forgot our general WPA PSK and did not want to dig for it in the password vault. So I cheated.
In OSX go to Spotlight and type Keychain Access
Then on the right hand side choose the System Option under Keychains
Then select the wireless network you lost your key to, right click and choose “copy password to clipboard”
At this point you will need to jump through the local password hoops but then you can past it into textedit and get back to doing whatever you were doing.
Here is to not loosing your keys and if you do hopefully a way out of the mess.