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XORCipher.js

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/**

* @function XORCipher

* @description - Encrypt using an XOR cipher

* The XOR cipher is a type of additive cipher.

* Each character is bitwise XORed with the key.

* We loop through the input string, XORing each

* character with the key.

* @param {string} str - string to be encrypted

* @param {number} key - key for encryption

* @return {string} encrypted string

*/

const XORCipher = (str, key) => {

if (typeof str !== 'string' || !Number.isInteger(key)) {

throw new TypeError('Arguments type are invalid')

}

return str.replace(/./g, (char) =>

String.fromCharCode(char.charCodeAt() ^ key)

)

}

export default XORCipher