From a49495ebef61c873b39fc4fab0202f9a50cde5f9 Mon Sep 17 00:00:00 2001
From: Wojciech Chodkowski <chodkows@gmail.com>
Date: Thu, 22 Feb 2018 11:41:41 +0100
Subject: [PATCH] day 3 done

---
 app/prework.js      | 25 +++++++++++++++++++++++++
 app/zadanie01.js    | 12 +++++++++++-
 app/zadanieDnia1.js | 15 ++++++++++++++-
 app/zadanieDnia2.js | 12 +++++++++++-
 4 files changed, 61 insertions(+), 3 deletions(-)
 create mode 100644 app/prework.js

diff --git a/app/prework.js b/app/prework.js
new file mode 100644
index 0000000..f0d3bc9
--- /dev/null
+++ b/app/prework.js
@@ -0,0 +1,25 @@
+const crypto = require('crypto');
+
+const text = 'Hello World!';
+const hash = crypto.createHmac('sha256', text).digest('hex');
+console.log(hash);
+
+function encodeText(text, password, algorithm) {
+  const cipher = crypto.createCipher(algorithm, password);
+
+  let encrypted = cipher.update(text, 'utf8', 'hex');
+  encrypted += cipher.final('hex');
+  return encrypted;
+}
+
+console.log(encodeText('Hello, World!', 'M0j3 has|0!', 'aes-256-cbc'));
+
+function decodeText(encodedText, password, algorithm) {
+  const decipher = crypto.createDecipher(algorithm, password);
+
+  let decrypted = decipher.update(encodedText, 'hex', 'utf8');
+  decrypted += decipher.final('utf8');
+  return decrypted;
+}
+
+console.log(decodeText('352c9abb9cd20b41766f352b2611bb7b', 'M0j3 has|0!','aes-256-cbc'));
diff --git a/app/zadanie01.js b/app/zadanie01.js
index 842f75e..bbc8f43 100644
--- a/app/zadanie01.js
+++ b/app/zadanie01.js
@@ -1,3 +1,13 @@
 const MY_PWD_HASH = '5dca0fc4e306d92b2077ad85e7c4bd87a3e8648e';
 
-//Twój kod
\ No newline at end of file
+const crypto =require('crypto');
+
+const array= ['??TegoHasła','CodersLab','Node.js Szyfruje Pliki', 'Zaźółć Gęślą Jaźń','Moje Haslo 1@3!','111#$((@)n','Dzisiaj Szyfruje 83'];
+
+for(let i=0;i<array.length; i++) {
+    let a =crypto.createHmac('rmd160', array[i]).digest('hex');
+    if(MY_PWD_HASH===a){
+      console.log(array[i]);
+    }
+    console.log(a);
+}
diff --git a/app/zadanieDnia1.js b/app/zadanieDnia1.js
index 8c20173..c88c4af 100644
--- a/app/zadanieDnia1.js
+++ b/app/zadanieDnia1.js
@@ -1 +1,14 @@
-//Twój kod
\ No newline at end of file
+//Twój kod
+const fs = require('fs');
+const crypto = require('crypto');
+
+process.argv.forEach((val, index) => {
+  if(index > 1 ){
+    fs.readFile(val, 'utf-8', (err, data)=> {
+      if(err === null) {
+        let hash = crypto.createHmac('sha256', data).digest('hex');
+        console.log(hash);
+      }
+    });
+  }
+});
diff --git a/app/zadanieDnia2.js b/app/zadanieDnia2.js
index 85846f4..44fa301 100644
--- a/app/zadanieDnia2.js
+++ b/app/zadanieDnia2.js
@@ -1,3 +1,13 @@
 const ENCRYPTED_TEXT = '4f9fa8f98650091c4910f5b597773c0a48278cfb001fe4eb3ff47ada85cbf0ed3dc17016b031e1459e6e4d9b001ab6e102c11e834a98dce9530c9668c47b76ee6f09d075d19a38e48b415e067c6ddcfad0d3526c405a4f4f2fb1e7502f303c40';
 
-//Twój kod
\ No newline at end of file
+const crypto = require('crypto');
+//Twój kod
+function decodeText(encodedText, password, algorithm) {
+  const decipher = crypto.createDecipher(algorithm, password);
+
+  let decrypted = decipher.update(encodedText, 'hex', 'utf8');
+  decrypted += decipher.final('utf8');
+  return decrypted;
+}
+
+console.log(decodeText(ENCRYPTED_TEXT, 'PysęjkkyDw','aes-256-ecb'));