I've tried setting up iCloud Keychain in OS X Mavericks but have failed.
From the iCloud System Prefs I activated Keychain. It asked me for my iCloud password, then for my Keychain password, then to enter an activation code sent to my phone. I waited, and waited and waited. Nothing came through. So I tried deselecting Keychain and allowing it to delete all passwords. I took at look at the new Keychain settings in iOS 7.0.3 under iCloud -> Keychain, and iCloud -> Account -> Advanced -> Keychain. Each time it asked me to use a different device to authorise it. I didn't get anywhere with this.
I finally got a bunch of verification codes sent to my phone, but now I can't enter them. The dialog that was requesting this code was dismissed and I can't get it back. I can't switch off Keychain in iCloud System Prefs, as it gets automatically re-enabled and the "Waiting for approval from other device" message is permanently displayed. Logging out and back in again had no effect.
Anyone else had any luck?
Seems to be fixed now. A few more random attempts on my Mac to disable and re-enable it brought the verification dialog back up to enter the verification code. Not entirely sure what the problem was or how I fixed it!