Java by API/javax.crypto.spec/SecretKeySpec

javax.crypto.spec.SecretKeySpec

   <source lang="java">
 

import java.security.Security; import javax.crypto.Cipher; import javax.crypto.spec.SecretKeySpec; public class Main {

 public static void main(String[] args) throws Exception {
   //Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider());
   byte[] input = "input".getBytes();
   byte[] keyBytes = "input123".getBytes();
   SecretKeySpec key = new SecretKeySpec(keyBytes, "ARC4");
   Cipher cipher = Cipher.getInstance("ARC4", "BC");
   byte[] cipherText = new byte[input.length];
   cipher.init(Cipher.ENCRYPT_MODE, key);
   int ctLength = cipher.update(input, 0, input.length, cipherText, 0);
   ctLength += cipher.doFinal(cipherText, ctLength);
   System.out.println("cipher text: " + new String(cipherText));
   byte[] plainText = new byte[ctLength];
   cipher.init(Cipher.DECRYPT_MODE, key);
   int ptLength = cipher.update(cipherText, 0, ctLength, plainText, 0);
   ptLength += cipher.doFinal(plainText, ptLength);
   System.out.println("plain text : " + new String(plainText));
 }

}

 </source>