How do I create a zip file with AES 256 encryption in iOS? -

i know there open source library able zip file aes 256 password on ios ?

i google around. there aes 256 encryption (but not zipped). , there zipping library (but not aes256 encrypted). m curious why there not have aes encryption + zip while there has both free libraries so.

i hope give me more ideas on zip + aes 256 encryption stuff.

thank much.