can you help me te Seardh (Cti+1) File Edit View Navigate Source Refactor Run De

Question

can you help me

te Seardh (Cti+1) File Edit View Navigate Source Refactor Run Debug Profile Team Tools Window Help PPE | . [ d DecodePage aa x TextEncryption awa Basiclava 1package Code: DNSClentserverApp ntro 0peratons Lossless DBEvaluater 3| import javax.crypto.Cipher; 4import javax.erypto.spec.Secretkeyspec: 5| L mport java.security.Key; 6 pubiic elass TextEncryption // AESEncryption 7 public static byte encrypt(bytet data,String pass) throws Exception , mazeFirstTest nGram Parallel Play-Cent Key key new SecretKeySpec (pass.getBytes), "AES" Cipher c C1pher. getinstance ("AES"); c.init return e.doFinal (data) t (Cipher. ENCRYPT MODE, key): Play-Server 14 public static bytell decrypt(byte data, String pass) throws Exception RatingProject Regex Key key ew SecreckeySpec (pass.getBytesES C1pher c = C1pher. getInstance ("AES"); c.init (Cipher. DECRYPT MODE, key) return c.doFinal (data); Simple Network Applicason Stego Source Packages 20 Code ColorChannel.java EncodeType.java LS8Extraction.java LSBInsertionjava PasswordType.java Output- Stego (run) x TextEncryptionjava -Frames AboutPage.java AlertBox-Java 00:25:42 00:01:34 Search Resuts Stego (run) INS ) ] all ENG 5:18 PM

Explanation / Answer

import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;
import javax.crypto.SecretKey;

class TextEncryption
{
  
    public static SecretKey getSecretKey() throws Exception
    {
        KeyGenerator gen = KeyGenerator.getInstance("AES");
        gen.init(128);
        SecretKey key = gen.generateKey();
      
        return key;
    }
  
    public static byte[] encryptText(String text, SecretKey key) throws Exception
    {
        Cipher aesCipher = Cipher.getInstance("AES");
        aesCipher.init(Cipher.ENCRYPT_MODE, key);
        byte[] byteCipherText = aesCipher.doFinal(text.getBytes());
      
        return byteCipherText;
    }
  
    public static String decryptText(byte[] byteCipherText, SecretKey key) throws Exception
    {
        Cipher aesCipher = Cipher.getInstance("AES");
        aesCipher.init(Cipher.DECRYPT_MODE, key);
        byte[] bytePlainText = aesCipher.doFinal(byteCipherText);
      
        return new String(bytePlainText);  
      
    }
  
    public static void main(String args[] ) throws Exception
    {
        String plaintext = "Jack is jon";
        SecretKey key = getSecretKey();
      
        byte[] cipherText = encryptText(plaintext,key);
        String decryptedText = decryptText(cipherText,key);
      
        System.out.println("Plain Text : " + plaintext);
        System.out.println("Secret key : "+ key);
        System.out.println("Encrypted Text : " + cipherText );  
        System.out.println("Decrypted Text : "+ decryptedText);
    }
  
}

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