AI2-GAS AES Alignment

package uk.co.metricrat.aesjajs;

import android.util.Base64;

import com.google.appinventor.components.annotations.*;

import com.google.appinventor.components.runtime.*;

import javax.crypto.Cipher;

import javax.crypto.spec.IvParameterSpec;

import javax.crypto.spec.SecretKeySpec;

@DesignerComponent(

version = 2,

versionName = "2.0",

description = "Developed by TIMAI2 using Fast.",

iconName = "icon.png"

)

public class AESJAJS extends AndroidNonvisibleComponent {

    private String k1;

    private String k2;

  public AESJAJS(ComponentContainer container) {

      super(container.$form());

  }

    @SimpleFunction(description = "Encrypt the message.")

    public void Encrypt(String message) throws Exception {

      if (k1.length() != 16 || k2.length() != 16) {

          AfterEncrypting("Check values for key and IV");

      } else {

          Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");

          SecretKeySpec key = new SecretKeySpec(k1.getBytes("UTF-8"), "AES");

          IvParameterSpec iv = new IvParameterSpec(k2.getBytes("UTF-8"));

          cipher.init(1, key, iv);

          byte[] encrypted = cipher.doFinal(message.getBytes("UTF-8"));

          AfterEncrypting(Base64.encodeToString(encrypted, Base64.NO_WRAP));

      }

    }

    @SimpleFunction(description = "Decrypt the message.")

    public void Decrypt(String encrypted) throws Exception {

        if (k1.length() != 16 || k2.length() != 16) {

            AfterDecrypting( "Check values for key and IV");

        } else {

            Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");

            SecretKeySpec key = new SecretKeySpec(k1.getBytes("UTF-8"), "AES");

            IvParameterSpec iv = new IvParameterSpec(k2.getBytes("UTF-8"));

            cipher.init(2, key, iv);

            byte[] decrypted = cipher.doFinal(Base64.decode(encrypted, 0));

            AfterDecrypting( new String(decrypted, "UTF-8"));

        }

    }

    @SimpleFunction(description = "Set the key value - 16 bytes).")

    public void Key(String value) {

        if (value.length() != 16) {

            throw new IllegalArgumentException("Key value length must be 16 bytes");

        } else {

            k1 = value;

        }

    }

    @SimpleFunction(description = "Set the IV value - 16 bytes.")

    public void IV(String value) {

        if (value.length() != 16) {

            throw new IllegalArgumentException("IV value length must be 16 bytes");

        } else {

            k2 = value;

        }

    }

    @SimpleEvent(description = "returns encrypted text")

    public void AfterEncrypting(String encryptedText) {

        EventDispatcher.dispatchEvent(this, "AfterEncrypting", encryptedText);

    }

    @SimpleEvent(description = "returns decrypted text")

    public void AfterDecrypting(String decryptedText) {

        EventDispatcher.dispatchEvent(this, "AfterDecrypting", decryptedText);

    }

}

function myFunction() {

 const k1 = "0123456789012345"; // Sample key

 const k2 = "5432109876543210"; // Sample key

 const str = "sample text"; // Sample text

 const key = CryptoJS.enc.Utf8.parse(k1);

 const iv = CryptoJS.enc.Utf8.parse(k2);

 // Encrypting

 const res1 = CryptoJS.AES.encrypt(str, key, { iv }).toString();

 console.log(res1); // <--- wyMY7zKADagvk1Z98gjIbw==

 // Decrypting

 var res2 = CryptoJS.enc.Utf8.stringify(CryptoJS.AES.decrypt(res1, key, { iv }));

 console.log(res2); // <--- sample text

}