diff --git a/src/crypto/Crypto.java b/src/crypto/Crypto.java
index 51d57b7..c4c2e50 100644
--- a/src/crypto/Crypto.java
+++ b/src/crypto/Crypto.java
@@ -1,10 +1,144 @@
-package crypto;
-
+import java.io.*;
+import java.nio.charset.StandardCharsets;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.HashMap;
 import java.util.Scanner;
 
-public class Crypto {
+public class Crypto4 {
+    static String operation="";
+    static String inputText="";
+    static int key=0;
+    static String sKey="";
+    static String inputFile="";
+    static String outputFile="";
+
     public static void main(String[] args) {
-        Scanner scanner = new Scanner(System.in);
-	// write your code here
+       /* for (int i = 0; i < args.length; i++){
+            System.out.println(args[i]);}*/
+        HashMap<String, String> hm = new HashMap();
+        for (int i = 0; i < args.length; i++) {
+            if ("-mode".equals(args[i])) {
+                if (args.length >= i + 1 && ("enc".equals(args[i + 1])) || "dec".equals(args[i + 1])) {
+                    hm.put(args[i], args[i + 1]);
+                } else {
+                    hm.put(args[i], "enc");
+                }
+            }
+            if ("-key".equals(args[i]) && args.length >= i + 1 && !"-data".equals(args[i + 1])) {
+                hm.put(args[i], args[i + 1]);
+            }
+            if ("-data".equals(args[i]) && args.length >= i + 1 && !"-in".equals(args[i + 1]) && !"-out".equals(args[i + 1])) {
+                hm.put(args[i], args[i + 1]);
+            }/* else {
+                Scanner scanner = new Scanner(System.in);
+                System.out.println("Enter data: ");
+                if (scanner.hasNextLine()) {
+                    inputText = scanner.nextLine();
+                }
+                System.out.println("Enter key: ");
+                if (scanner.hasNextLine()) {
+                    sKey = scanner.nextLine();
+                }
+                hm.put("-data", inputText);
+                hm.put("-key", sKey);
+            }*/
+            if ("-in".equals(args[i]) && args.length >= i + 1 && !"-out".equals(args[i + 1])) {
+                hm.put(args[i], args[i + 1]);
+                inputFile=args[i+1];
+            }/* else if (args.length < i + 1) {
+                Scanner scanner = new Scanner(System.in);
+                if (scanner.hasNextLine()) {
+                    System.out.println("Enter inputFile: ");
+                    inputFile = scanner.nextLine();
+                }
+                hm.put("-in", inputFile);
+
+            }*/
+            if ("-out".equals(args[i]) && args.length >= i + 1) {
+                hm.put(args[i], args[i + 1]);
+            }}
+            System.out.println(Arrays.asList(hm));
+            //System.out.println(Collections.singletonList(hm));
+            if (!hm.containsKey("-data")){
+                Scanner scanner = new Scanner(System.in);
+                System.out.println("Enter data: ");
+                if (scanner.hasNextLine()) {
+                    inputText = scanner.nextLine();
+                }
+                System.out.println("Enter key: ");
+                if (scanner.hasNextLine()) {
+                    sKey = scanner.nextLine();
+                }
+                hm.put("-data", inputText);
+                hm.put("-key", sKey);
+            }
+        if (!hm.containsKey("-in")){
+            Scanner scanner = new Scanner(System.in);
+            if (scanner.hasNextLine()) {
+                System.out.println("Enter inputFile: ");
+                inputFile = scanner.nextLine();
+            }
+            hm.put("-in", inputFile);
+        }
+        if (!hm.containsKey("-out")){
+            hm.put("-out",outputFile);
+        }
+        //System.out.println(Arrays.asList(hm));
+        try {
+                key = Integer.parseInt(hm.get("-key"));
+            } catch (NullPointerException e) {
+            }
+        inputFile=hm.get("-in");
+        outputFile=hm.get("-out");
+            if ("enc".equals(hm.get("-mode"))) {
+                encrypt(hm.get("-data"), key, inputFile, outputFile);
+            } else if ("dec".equals(hm.get("-mode"))) {
+                decrypt(hm.get("-data"), key, inputFile, outputFile);
+            }
+
+    }
+    //public static void encrypt(String text, int key, String inFile, String outFile) {
+        char[] charText = text.toCharArray();
+        for (int i = 0; i < charText.length; i++) {
+            char tmp = (char) (charText[i]+key);
+            charText[i] = tmp;
+        }
+        String encryptText = new String(charText);
+        if("".equals(outFile)){
+            System.out.println(encryptText);
+        }else{
+            try(BufferedReader reader = new BufferedReader(new InputStreamReader(new FileInputStream("C:\\Java Junior\\Code\\4.Junior-Maven-CSS\\Main\\src\\"+inFile), StandardCharsets.UTF_8));
+                BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(new FileOutputStream("C:\\Java Junior\\Code\\4.Junior-Maven-CSS\\Main\\src\\"+outFile), StandardCharsets.UTF_8));){
+                int i;
+                while((i=reader.read())!=-1){
+                    writer.write(i+key);
+                }
+            }catch (IOException e){
+                e.printStackTrace();
+            }
+        }
+    }
+    public static void decrypt(String text, int key, String inFile, String outFile) {
+        char[] charText = text.toCharArray();
+        for (int i = 0; i < charText.length; i++) {
+            char tmp = (char) (charText[i]-key);
+            charText[i] = tmp;
+        }
+        String decryptText = new String(charText);
+        if("".equals(outFile)){
+            System.out.println(decryptText);
+        }else{
+            try(BufferedReader reader = new BufferedReader(new InputStreamReader(new FileInputStream("C:\\Java Junior\\Code\\4.Junior-Maven-CSS\\Main\\src\\"+inFile), StandardCharsets.UTF_8));
+                BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(new FileOutputStream("C:\\Java Junior\\Code\\4.Junior-Maven-CSS\\Main\\src\\"+outFile), StandardCharsets.UTF_8));){
+                int i;
+                while((i=reader.read())!=-1){
+                    writer.write(i-key);
+                }
+            }catch (IOException e){
+                e.printStackTrace();
+            }
+        }
     }
 }
+