first you enter password to open encryption page then choose same seed with your friend and share your public key together your public key down of the page
stracture encryption = encrypted "random AES key" with your frined RSA public key + hashed seed + encrypted massage with "random AES key"
random AES key length is 16 RSA key is 512 bit
this fuction encode and decode ip ex: 192.168.1.100 => 30 2e 1 1a
radix64 => num -> encode 1 -> 1 10 -> A 35 -> Z 36 -> a 61 -> z 62 -> + 63 -> / 64 -> 10