function EncryptText() { var text = document.getElementById('textbox').value; var Key = CryptoJS.enc.Hex.parse("PSVJQRk9QTEpNVU1DWUZCRVFGV1VVT0="); var IV = CryptoJS.enc.Hex.parse("YWlFLVEZZUFNaWl="); var encryptedText = CryptoJS.AES.encrypt(text, Key, {iv: IV, mode: CryptoJS.mode.CBC, padding: CryptoJS.pad.Pkcs7}); //var decrypted = CryptoJS.AES.decrypt(encrypted, "Secret Passphrase"); var encrypted = document.getElementById('encrypted'); encrypted.value = encryptedText; }