algorithms

23 Dec 2017

Intro to D3 Graphs + visualize sorting algorithms
Visualizing Sorting Algorithms in D3
20 Dec 2017

Quicksort, a Divide and Conquer Sorting Algorithm.
We code Quicksort in JavaScript.
19 Dec 2017

Bubble Sort
Bubble Sort algorithm, coded in JavaScript.
19 Dec 2017

Binary Insertion Sort
Binary Insertion Sort algorithm, coded in JavaScript.
18 Dec 2017

Insertion Sort
Insertion sort algorithm, coded in JavaScript.
17 Dec 2017

Selection Sort
Selection sort algorithm, coded in JavaScript.
15 Dec 2017

Binary Search
Binary search algorithm with a test runner implementation, coded in JavaScript.
03 Oct 2017

Let's Implement a Stream Cipher (CTR)!
Implementing AES in CTR mode, a Stream Cipher, to solve Cryptopals Set 3 Challenge 18.
02 Oct 2017

CBC Padding Oracle
Exploring a CBC padding oracle in Cryptopals Set 3 Challenge 17.
29 Sep 2017

CBC Bitflipping Attacks
Even though CBC is more secure than ECB, it is still vulnerable to attacks without taking additional precautions like using a Message Authentication Code (MAC). Cryptopals Set 2 Challenge 16.
28 Sep 2017

PKCS7 Padding Validation
Yet Another demonstration of why you shouldn't use ECB, even when some random-sized block of padding is prepended to the message. Cryptopals Set 2 Challenge 15.
28 Sep 2017

ECB Byte At a Time (Harder!)
Yet Another demonstration of why you shouldn't use ECB, even when some random-sized block of padding is prepended to the message. Cryptopals Set 2 Challenge 14.
27 Sep 2017

ECB Cut and Paste
Another demonstration of why you shouldn't use ECB! Cryptopals Set 2 Challenge 13.
26 Sep 2017

Byte at a Time ECB Decryption
We demonstrate how to perform ECB decryption one byte at a time, a good demonstration of why ECB should not be used in practice. Instead, use CBC! Cryptopals Set 2 Challenge 12.
24 Sep 2017

An AES CBC/ECB Detection Oracle!
We implement an ECB/CBC detection oracle for use in future challenges. This solves Cryptopals Set 2 Challenge 11.
24 Sep 2017

Let's Implement Cipher Block Chaining!
We implement AES-CBC, a more secure mode of AES than ECB, to solve Cryptopals Set 2 Challenge 10.
22 Sep 2017

Let's Implement PKCS7 Padding!
We implement PKCS7, a commonly used padding in cryptography. And we solve Cryptopals Set 2 Challenge 9!
21 Sep 2017

Let's Detect AES! (AES in ECB Mode)
We learn how to detect AES encryption when used in its less-secure form, ECB mode. In the process, we solve Cryptopals Set 1 Challenge 8.
21 Sep 2017

Let's Code AES! (AES in ECB Mode)
As an exercise, we code AES in ECB mode from scratch in JavaScript, and we use the results to solve Cryptopals Set 1 Challenge 7.
16 Sep 2017

Break Repeating-Key XOR
How is repeating-key XOR is vulnerable to attack. Find out by Solving Cryptopals Set 1 Challenge 6.
14 Sep 2017

Implement Repeating-Key XOR
Implement Repeating-key XOR, a slightly more secure version of the single-byte XOR cipher, and solve Cryptopals Set 1 Challenge 5.
14 Sep 2017

Detecting The Single-Byte XOR Cipher
Find the secret text encrypted using a single-byte XOR cipher and solve Cryptopals Set 1 Challenge 4.
14 Sep 2017

Cracking the Single-Byte XOR Cipher
Find the secret text encrypted using a single-byte XOR cipher and solve Cryptopals Set 1 Challenge 3.
14 Sep 2017

Calculating Fixed XOR
Calculate a Fixed XOR between two strings and solve Cryptopals Set 1 Challenge 2.
14 Sep 2017

Convert Hexadecimal String to Base-64
Calculate a Fixed XOR between two strings and solve Cryptopals Set 1 Challenge 1.