password-bot

A rivescript based chatbot that generates, validates and saves passwords. I entered this bot in the 2016 VentureBeat Botathon and it is an excellent demonstration of using advanced python objects inside of the @AiChaos Rivescript scripting language. If you're not familiar with Rivescript check it out here

Functionality

Generating

You> gimme a password
Password Bot> what kind? regular, strong or a passphrase
You> passphrase
Password Bot> here you go my friend: manifestly-human-accusatrixes

Validating

You> is this password strong?
Password Bot> show me (type or copy it)
You> p4ssWord
Password Bot> could be stronger if you added: symbols, more characters

Saving

You> can you save a password?
Password Bot> sure. type 'nickname and password' just like this
You> facebook and &jh$$fRt101
Password Bot> saved nickname facebook and password &jh$$fRt101 are you done?

Knowledge

You> tell me about rainbow tables
Password Bot> Here's what I know: A rainbow table is a precomputed table for reversing 
cryptographic hash functions, usually for cracking password hashes. Tables are usually 
used in recovering a plaintext password up to a certain length consisting of a 
limited set of characters.

Python Objects

Rivescript supports python and javascript objects that can be executed inside the running chatbot. The power and flexibility of this in my opinion surpasses what can be done with plain AIML.

> object phrase python
      import random
      import sys
      import string

      dict_file = "eg/US.txt"
      n_dict = open(dict_file).read().splitlines()

      def pass_gen(size, phrases=n_dict):
	        return ''.join(random.choice(phrases)+'-' for _ in range(size))
      passphrase = str(pass_gen(3))

      return passphrase[:-1]
< object

Implementation

Run the chatbot in the terminal

   $ python password_bot.py

or try the twillio / flask app that comes with Rivescript. Point to the correct directory of .rive files and test it out

from flask import Flask, request, redirect
from rivescript import RiveScript
import twilio.twiml

bot = RiveScript()
bot.load_directory(
  os.path.join(os.path.dirname(__file__), "..", "brain")
)
bot.sort_replies()

app = Flask(__name__)

@app.route("/twilio", methods=["GET", "POST"])
def hello_rivescript():
    """Receive an inbound SMS and send a reply from RiveScript."""

    from_number = request.values.get("From", "unknown")
    message     = request.values.get("Body")
    reply       = "(Internal error)"

    # Get a reply from RiveScript.
    if message:
        reply = bot.reply(from_number, message)

    # Send the response.
    resp = twilio.twiml.Response()
    resp.message(reply)
    return str(resp)

if __name__ == "__main__":
    app.run(host='127.0.0.0', debug=True)