Intitial Files

All this program can do currently is encrypt with an Ceaser  Cypher. More encryption techniques and decryption will needs to be added in later.

Author: davidhaw

Encrypter.java

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+package base;
+
+// Encrypts the data using ceaser cypher. This will have to be updated to PGP later down the road for better encryption. 
+// The encryption code is from https://rosettacode.org/wiki/Caesar_cipher#Java
+public class Encrypter {
+
+	 public static String decode(String enc, int offset) {
+	        return encode(enc, 26-offset);
+	    }
+	 
+	    public static String encode(String enc, int offset) {
+	        offset = offset % 26 + 26;
+	        StringBuilder encoded = new StringBuilder();
+	        for (char i : enc.toCharArray()) {
+	            if (Character.isLetter(i)) {
+	                if (Character.isUpperCase(i)) {
+	                    encoded.append((char) ('A' + (i - 'A' + offset) % 26 ));
+	                } else {
+	                    encoded.append((char) ('a' + (i - 'a' + offset) % 26 ));
+	                }
+	            } else {
+	                encoded.append(i);
+	            }
+	        }
+	        return encoded.toString();
+	    }
+	
+}

Main.java

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+package base;
+import java.util.Scanner;
+import java.util.Random;
+
+public class Main {
+	
+	
+    public static void main(String[] args) {
+
+		// create a new scanner with the specified String Object
+        Scanner scanner = new Scanner(System.in);
+        
+        //Welcome Text and makes an line with no text to seperate the actual encryption/decryption
+        System.out.println("SafeFile 2018 Java Version");
+        System.out.println("Liscenced with Apache Liscence, Version 2.0");
+        System.out.println();
+        
+        //Check if user wants to encrypt or decrypt
+        //DECRYPT HAS NOT BEEN ADDED IN SO CODE IS COMMENTED OUT
+        //System.out.println("Would you like to Encrypt or Decrypt (Select one in the same spelling)");
+       // String EorD = scanner.next();
+        
+        //if (EorD.equals("Encrypt")) {
+        	
+        	Scanner scanner1 = new Scanner(System.in);
+
+        	//Check how the user wants to encrypt
+        	System.out.println("How Would You Like to Encrypt? - Available Currently: Ceaser Cypher");
+        	System.out.println("For Ceaser Cypher, enter Ceaser"); //More would be added in as more encryption ways are added into the program
+        	
+        	String howE = scanner.next();
+        	
+        	if (howE.equals("Ceaser")) {
+        		
+                System.out.println("What is the text you would like to encrypt?");
+                String textE = scanner1.next();
+                
+                System.out.println("What is the offset for the Ceaser Cypher?");
+        		String numE = scanner1.next();
+        				
+        		int numEi = Integer.parseInt(numE);
+        	
+        		String encrypted = Encrypter.encode(textE, numEi);
+                
+        		System.out.println("Below is encrypted Text with Ceaser Cypher, offset of " + numE);
+        		System.out.println(encrypted);
+        		
+                // close the scanner
+                scanner1.close();
+                scanner.close();
+        		
+        	}
+        //}
+        	
+        } 
+        //else if (EorD.equals("Decrypt")){
+        		
+        		//Asks the user how they want to decrypt
+            	//System.out.println("How Would You Like to Decrypt? - Available Currently: Ceaser Cypher");
+            	//String howD = scanner.next();
+            	
+            	 //if(howD.equals("Ceaser Cypher")) {
+            		
+            		//Asks user the text and offset they want to use to decrypt the ceaser cypher
+            		//System.out.println("What is the text you would like to decrypt?");
+                   // String textD = scanner.next();
+                    
+                    //System.out.println("What is the offset for the Ceaser Cypher?");
+            		//String numD = scanner.next();
+            				
+            		//int numDi = Integer.parseInt(numD);
+            	
+            		//String decrypted = Encrypter.encode(textD, numDi);
+                    
+            		//System.out.println(decrypted);
+            		
+            		//System.out.println("please close and open the application again if you want to do another calculation");
+            		
+            		
+            	//}
+            	
+            	
+            	
+        	//}
+        	 
+}