!Don't use it for important data.
I use it to prevent search engines from collecting data.
.C#
public static class EasyCrypt
{
public static string Encrypt(string input, int shft)
{
if (string.IsNullOrEmpty(input))
return string.Empty;
return Convert.ToHexString(input.Select(c => Convert.ToByte((((int)c) + shft) % 255)).ToArray());
}
public static string Decrypt(string input, int shft)
{
if (string.IsNullOrEmpty(input))
return string.Empty;
return System.Text.ASCIIEncoding.ASCII.GetString(
Convert.FromHexString(input).Select(b => Convert.ToByte(((int)b + 255 - shft) % 255)).ToArray());
}
}
JS
const cardNo = '321321312';
function encrypt(text, shft = 83) {
if (text == null ||
typeof (text) == 'undefined' ||
text.length < 1)
return '';
let encrypted = '';
for (let i = 0; i < text.length; i += 1) {
const charCode = text.charCodeAt(i);
let shiftedChar = (charCode + shft) % 255;
encrypted += shiftedChar.toString(16);
}
return encrypted;
}
function decrypt(text, shft = 83) {
if (text == null ||
typeof (text) == 'undefined' ||
text.length < 1)
return '';
let decrypted = '';
for (let i = 0; i < text.length; i += 2) {
const hex = text.substring(i, i + 2);
const charCode = parseInt(hex,16);
let shiftedChar = (255 +(charCode - shft)) % 255;
decrypted += String.fromCharCode(shiftedChar);
}
return decrypted;
}
const encryptedCardNo = encrypt(cardNo);
const decryptedCardNo = decrypt(encryptedCardNo);
console.log(cardNo);
console.log(encryptedCardNo);
console.log(decryptedCardNo);
