When upgrading the gem from version 1.1.3 to 3.0.0 (or 2.0.0), I get the error:
"ArgumentError: data must not be empty" on a Encryptor.decrypt call
I'm calling the decrypt method with the same value as before (iv is 12 bytes instead of 16).
dcrypted_value = Encryptor.decrypt unpacked, :key => the_key, :iv => the_iv, :salt => the_salt