http://ocw.cs.pub.ro/courses/ 2026-04-04T19:28:40+03:00 http://ocw.cs.pub.ro/courses/ http://ocw.cs.pub.ro/courses/lib/tpl/arctic/images/favicon.ico text/html 2019-06-27T23:49:56+03:00 http://ocw.cs.pub.ro/courses/ic/res/hw1?rev=1561668596&do=diff CS294S - Homework 1 this Exercise 1 (3p) In this exercise we'll try to break a Linear Congruential Generator, that may be used to generate “poor” random numbers. We implemented such weak RNG to generate a sequence of bytes and then encrypted a plaintext message. The resulting ciphertext in hexadecimal is this: text/html 2019-06-27T22:23:00+03:00 http://ocw.cs.pub.ro/courses/ic/res/intro?rev=1561663380&do=diff Python Crash Course Python Interactive Mode Python is an easy to learn interactive programming language. Throughout this lab, we'll be using Python 2.7. You can run Python code in two ways: * by writing a source file and running it (eventually, with some command line arguments) * by entering commands in interactive mode text/html 2019-11-07T23:19:58+03:00 http://ocw.cs.pub.ro/courses/ic/res/tema1?rev=1573161598&do=diff padding * Random * Unpredictable * Not secret [CBC encryption] [CBC decryption] Chosen plaintext attackBEAST paper 2011 [BEAST Attack] #!/usr/bin/env python # -*- coding: utf-8 -*- ''' TLS BEAST attack - PoC Implementation of the cryptographic path behind the attack ''' import random import binascii import sys from Crypto.Cipher import AES from Crypto import Random SECRET_COOKIE = "ID=3ef729ccf0cc5" """ AES-CBC function encrypt, decrypt, pad, un…