Can this code be crackedYes or no 2 import java.util.*;3 public class Main5public static boolean isALetter (char letter){if( (letter = 'a' && letter <= 'z') || (letter = 'A' && letter <= 'Z'))return true;return false;public static int putkeyInRange (int encryptKey){1112int num;▼if(encryptKey>=-32767 && encryptKey<=32767){13141516num=(encryptKey26)+1;return num;System.out.prrìntln(*Invlaid input key :");17return -1;1819202122public static char encode (char letter, int encryptKey){return (char)((int)letter+encryptKey);public static char decode (char letter, int encryptKey) {23return (char) ((int)letter-encryptKey);242526 public static void main(String[] args) {27IScanner sc=new Scanner (System.in);System.out.print("Enter a message: ");String m-sc.nextLine ();System.out.print("Enter a Key:");int key=sc.nextInt();String encryptNessage="";String decryptmessage="";int encryptkey=DputKeyInRange (key);282930313233343536 vI/encryption processfor(int i=0;ia.length();i++){if(isALetter(m.charAt(i)))IencryptMessage+=encode (m.charAt (i), encryptKey);37▼3839elseencryptNessage+=m.charAt (i);40 v41424344//Decrypt processfor(int i=0;i

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Answered: Can this code be cracked Yes or no

Engineering

Computer Science

Can this code be cracked Yes or no

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Concept explainers

Variables and Constant

Constants and variables are widely used in mathematical equations and expressions. They are also commonly found in the domain of programming, where each language has its own way to differentiate between a constant and a variable. Since they have all sorts of applications, knowing their differences is a good place to start.

Question

Can this code be cracked Yes or no

2 import java.util.*;
3 public class Main
5
public static boolean isALetter (char letter){
if( (letter = 'a' && letter <= 'z') || (letter = 'A' && letter <= 'Z'))
return true;
return false;
public static int putkeyInRange (int encryptKey){
11
12
int num;
▼
if(encryptKey>=-32767 && encryptKey<=32767){
13
14
15
16
num=(encryptKey26)+1;
return num;
System.out.prrìntln(*Invlaid input key :");
17
return -1;
18
19
20
21
22
public static char encode (char letter, int encryptKey){
return (char)((int)letter+encryptKey);
public static char decode (char letter, int encryptKey) {
23
return (char) ((int)letter-encryptKey);
24
25
26 public static void main(String[] args) {
27
I
Scanner sc=new Scanner (System.in);
System.out.print("Enter a message: ");
String m-sc.nextLine ();
System.out.print("Enter a Key:");
int key=sc.nextInt();
String encryptNessage="";
String decryptmessage="";
int encryptkey=DputKeyInRange (key);
28
29
30
31
32
33
34
35
36 v
I/encryption process
for(int i=0;ia.length();i++){
if(isALetter(m.charAt(i)))I
encryptMessage+=encode (m.charAt (i), encryptKey);
37▼
38
39
else
encryptNessage+=m.charAt (i);
40 v
41
42
43
44
//Decrypt process
for(int i=0;i<encryptMessage.length();i++){
if(isALetter(encryptMessage.charAt (i))){
decryptmessage+-decode (encryptMessage.charAt(i), encryptkey);
45 v
46
47
48
49
else
decryptmessage+=encryptMessage.charAt(i);
50
51
52
System.out.println("Encrypt Message: "+encryptMessage);
System.out.println("Decrypt Message: "+decryptmessage);
53
54
55
56
57
58 }

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