# About

This is the Cryptography homework 3.

# Usage

## Installation

Please install `pycryptodome` using Python 3.10.

## Part 1

First run `alice.py` and input the message.
Run `bob.py` to decrypt the message.

## Part 2

Run `bob.py` to generate bob's public and private keys.
Run `alice.py` and enter a message.
Run `bob.py` to decrypt the message.

## Part 3

Run `speed-test.py` or speed-test-nokey.py`.

The difference between the two is that nokey doesn't generate a new key for each encryption and decryption.