자바 ARC4 암호화

package runtime;

import java.security.Security;

import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;

public class RutimeTest {

 public static void main(String[] args) throws Exception{
  // TODO Auto-generated method stub

  byte[] input = "1234567890".getBytes();
  byte[] keyBytes = "input123".getBytes();

  
  SecretKeySpec key = new SecretKeySpec(keyBytes, "ARC4");
  Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider());
  Cipher cipher = Cipher.getInstance("ARC4", "BC");

  //인코딩
  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));
  
  //디코딩

  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));

 }
}

 

라이브러리 다운받고해야됨

 

bcprov/bcprov-jdk15on-1.52.jar.zip( 2,482 k)