Finaly;)

app/zadanie01.js

@@ -1,3 +1,23 @@
 const MY_PWD_HASH = '5dca0fc4e306d92b2077ad85e7c4bd87a3e8648e';
 
-//Twój kod
+//Twój kod
+const passes = ['??TegoHasła',
+'CodersLab',
+'Node.js Szyfruje Pliki',
+'Zaźółć Gęślą Jaźń',
+'Moje Haslo 1@3!',
+'111#$((@)n',
+'Dzisiaj Szyfruje 83'
+]
+const algorithmTypes = ['sha256', 'sha512', 'md5', 'rmd160'];
+const crypto = require('crypto');
+
+// console.log(MY_PWD_HASH.length)    
+
+    passes.filter( (pass) => {
+        algorithmTypes.filter((algo) => {
+            const hash = crypto.createHmac(algo, pass).digest('hex')
+            MY_PWD_HASH === hash ?  console.log(`algorytm to: ${algo},
+hasło to: ${pass}`) : null            
+        })
+    })

app/zadanieDnia1.js

@@ -1 +1,31 @@
-//Twój kod
+//Twój kod
+const fs = require('fs');
+const crypto = require('crypto');
+
+const arr = process.argv[2];
+console.log('argument to: ',arr);
+// var text = '';
+fs.readFile(arr, 'utf8', (err, data) => {
+    if (err === null) {
+        console.log('Poprawnie odczytano plik :', data);
+        // const paresData = JSON.parse(data);
+
+        console.log('type to: ' ,typeof data)
+
+        const text = data;
+
+        // console.log('type is: ', typeof paresData)
+        const hash = crypto.createHmac('sha256', text)
+            .digest('hex');
+        console.log('PASS IS: ', hash);
+
+
+
+
+
+
+   } else {
+        console.log('Błąd podczas odczytu pliku!', err);
+    }
+});
+

app/zadanieDnia2.js

@@ -1,3 +1,39 @@
 const ENCRYPTED_TEXT = '4f9fa8f98650091c4910f5b597773c0a48278cfb001fe4eb3ff47ada85cbf0ed3dc17016b031e1459e6e4d9b001ab6e102c11e834a98dce9530c9668c47b76ee6f09d075d19a38e48b415e067c6ddcfad0d3526c405a4f4f2fb1e7502f303c40';
 
-//Twój kod
+//Twój kod
+
+// console.log(ENCRYPTED_TEXT.length)
+
+
+const text = 'Pobawmy się jak komputerowy Detektyw'
+const result = []
+text.split(" ").forEach( el => result.push(el[0] + el[el.length-1]) )
+const pass = result.join('')
+
+// console.log(pass)
+// console.log('result: ',typeof result)
+
+// decipher:
+
+const crypto = require('crypto');
+const algorithms = ['aes192', 'aes-256-cbc', 'aes-256-ecb'];
+
+
+
+function decodeText(encodedText, password, algorithm) {
+    const decipher = crypto.createDecipher(algorithm, password);
+
+    let decrypted = decipher.update(encodedText, 'hex', 'utf8');
+    decrypted += decipher.final('utf8');
+    return decrypted;
+}
+
+
+algorithms.forEach(el => {
+    try{
+        console.log(decodeText(ENCRYPTED_TEXT, pass, el))
+    }
+    catch(err){
+        // console.log('blad: ')
+    }
+})