Question

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

Answer 1

function XOREncryption(s: string, key: string) {
    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 = "TypeScript programming language is a strict syntactical superset of JavaScript";
const key = "secretkey";
          
const cipher = XOREncryption(s, key);
console.log(cipher);
          
const noncipher = XOREncryption(cipher, key);
console.log(noncipher);
  
  
  
  
/*
run:
  
"'6	E

E
EESE

EEE>
 " 
 
"TypeScript programming language is a strict syntactical superset of JavaScript" 
  
*/

 

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