Demo project which demonstrate how to encrypt and decrypt random string
-Encrypt: Generates random string and encrypt it with AES 256 and RSA 2048 and show the encrypted text to user. Key that is used for encryption generated randomly.
-KeyChain API: The key stored on secure enclave by using KeyChain API. (UICKeyChainStore by Kishikawa Katsumi)
-Decrypting the encrypted string and show it to user.