Library for public key encryption, use var = pke(message) to create a pke object.
Then you can use the var.encrypt() and var.decrypt() methods to encrypt and decrypt the message.
By deafault they will encyrpt and decrypt with default keys, to do it with different keys just pass them to the var.encrypt() and var.decrypt() methods.
eg:
var.encrypt(encrypt_key, main_key)var.decrypt(decrypt_key, main_key)