From 0fece951d2a8335a22ded9fb0de45220b4a627f2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C5=81ukasz=20Bu=C5=82ka?= <mckornik@poczta.fm>
Date: Wed, 31 Jan 2018 21:49:33 +0000
Subject: [PATCH] Day3

---
 app/zadanie01.js    | 17 ++++++++++++++++-
 app/zadanieDnia1.js | 17 ++++++++++++++++-
 app/zadanieDnia2.js | 18 +++++++++++++++++-
 3 files changed, 49 insertions(+), 3 deletions(-)

diff --git a/app/zadanie01.js b/app/zadanie01.js
index 842f75e..95afb5f 100644
--- a/app/zadanie01.js
+++ b/app/zadanie01.js
@@ -1,3 +1,18 @@
 const MY_PWD_HASH = '5dca0fc4e306d92b2077ad85e7c4bd87a3e8648e';
 
-//Twój kod
\ No newline at end of file
+const crypto = require('crypto');
+
+const data = {
+    key:  [ '??TegoHasła', 'CodersLab', 'Node.js Szyfruje Pliki', 'Zaźółć Gęślą Jaźń', 'Moje Haslo 1@3!', '111#$((@)n', 'Dzisiaj Szyfruje 83'],
+    algorithm: ['sha256', 'sha512', 'md5', 'rmd160']
+}
+
+    
+data.key.forEach(key => {
+  data.algorithm.forEach( algorithm => {
+   let hash = crypto.createHmac(algorithm, key).digest('hex');
+   if (hash == MY_PWD_HASH){
+       console.log('Uzyty klucz to: ' + key + ', a algorytm to: ' + algorithm + '.');
+   }
+  });
+});
\ No newline at end of file
diff --git a/app/zadanieDnia1.js b/app/zadanieDnia1.js
index 8c20173..bf51f93 100644
--- a/app/zadanieDnia1.js
+++ b/app/zadanieDnia1.js
@@ -1 +1,16 @@
-//Twój kod
\ No newline at end of file
+//Twój kod
+
+const crypto = require('crypto');
+const fs = require('fs');
+
+const args = process.argv[2];
+
+fs.readFile(args, 'utf8', (err, data) => {
+   if (err === null) {
+       console.log('Odczytalem plik ' + args + '.');
+       let hash = crypto.createHmac('sha256', data).digest('hex');
+       console.log('Suma kontrolna sha256 dla pliku ' + args + ' to: ' + hash + '.');
+   } else {
+       console.log('Nie udalo sie odczytac pliku. );', err);
+   }
+});
\ No newline at end of file
diff --git a/app/zadanieDnia2.js b/app/zadanieDnia2.js
index 85846f4..d6c0717 100644
--- a/app/zadanieDnia2.js
+++ b/app/zadanieDnia2.js
@@ -1,3 +1,19 @@
 const ENCRYPTED_TEXT = '4f9fa8f98650091c4910f5b597773c0a48278cfb001fe4eb3ff47ada85cbf0ed3dc17016b031e1459e6e4d9b001ab6e102c11e834a98dce9530c9668c47b76ee6f09d075d19a38e48b415e067c6ddcfad0d3526c405a4f4f2fb1e7502f303c40';
 
-//Twój kod
\ No newline at end of file
+//Twój kod
+
+const data = {
+    algorithm: 'aes-256-ecb',
+    pswd: 'PysęjkkyDw',
+}
+
+const crypto = require('crypto');
+    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, data.pswd, 'aes-256-ecb'));