iCloud Keychain unusable for Iranian

See iCloud Keychain availability by country

Yes, it confirms Iran is not currently on the list, but it also gives alternatives to sms.

Don't read too much into it. Supposedly Canada is on the list but my particular SMS provider doesn't work.

You can still use iCloud Keychain by following these steps:

Devices using iOS 7.0.3 (iPhone, iPad)

1. Go to Settings > iCloud > Keychain.
2. Enter your Apple ID password.
3. When asked if you want to use your device passcode as the iCloud Security Code, tap Create Different Code.
4. Tap Advanced Options, then choose one of these options:
   • Get a Random Security Code.
   • Don't Create Security Code. Choosing not to create an iCloud Security Code means that your iCloud Keychain is stored only locally on your device and updates only across your approved devices, not with Apple's servers.
5. Follow the onscreen instructions to complete setup of iCloud Keychain.

Macs using OS X Mavericks v10.9 or later

1. Choose Apple () menu > System Preferences. Click iCloud, then select Keychain.
2. Enter your Apple ID password.
3. Click Advanced, then choose one of these two options:
   • Get a Random Security Code.
   • Don't Create Security Code. Choosing not to create an iCloud Security Code means that your iCloud Keychain is stored only locally on your Mac and updates only across your approved devices, not with Apple's servers.
4. Follow the onscreen instructions to complete setup of iCloud Keychain.