Recover data from encrypted SD card
Deleted photos, yes. Encrypted photos, no. If PhotoRec or ZAR can't recover them, they're gone. (ZAR even bypasses the CPU in the SD card, so it doesn't matter if the card is accessible or not.) and they can only recover data that looks like photos. "Data" that looks like random data (which is what an encrypted file looks like) isn't "recoverable" with file recovery techniques.
The encryption algorithm used in Android, due to the limited processing power, isn't unbreakable.
This is the reason that ALL important files should be backed up to at least 2 independent devices. If you don't have the time to do the backup, the files weren't that important.