1. What characteristics would make the encryption completely unbreakable? What characteristics would make the encryption impractical to break?
2. Obama and Romney wish to share the secret and they don't wish message to be deciphered during communications. Would they use public or private key when sending message?
3. What role do technologies like encryption play in protecting privacy?
4. describe process in public key systems if you wish to support non-repudiation and securing message.