Question

How to use XOR Encryption (XOR Cipher) to encryption a string in JavaScript

Answer 1

function XOREncryption(s, key) {
	const slen = s.length, keylen = key.length;
         
  let result = '';
     
  for (let i = 0; i < slen; i++) {
       	result += String.fromCharCode(s.charCodeAt(i) ^ key.charCodeAt(i % key.length));
  }
     
	return result;
}    
        

const s = "JavaScript is a programming language that is one of the core technologies of the www";
const key = "secretkey";
         
const cipher = XOREncryption(s, key);
console.log(cipher);
         
const noncipher = XOREncryption(cipher, key);
console.log(noncipher);
 
 
 
 
/*
run:
 
"96   E
EKS    
STYR
KE
EEY

"JavaScript is a programming language that is one of the core technologies of the www"
 
*/

 

 

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