Use JDK AES - Java Security

Java examples for Security:AES

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Description

Use JDK AES

Demo Code


import java.security.Key;

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

import org.apache.commons.codec.binary.Base64;

public class ImoocAES {

    private static String src = "imooc security aes";

    public static void main(String[] args) {
        jdkAES();/*from   w  ww.j  a v a  2 s . c o  m*/
    }

    public static void jdkAES() {
        try {
            KeyGenerator keyGenerator = KeyGenerator.getInstance("AES");
            keyGenerator.init(128);
            SecretKey secretKey = keyGenerator.generateKey();
            byte[] keyBytes = secretKey.getEncoded();

            Key key = new SecretKeySpec(keyBytes, "AES");

            Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
            cipher.init(Cipher.ENCRYPT_MODE, key);
            byte[] result = cipher.doFinal(src.getBytes());
            System.out.println("jdk aes encrypt : " + Base64.encodeBase64String(result));

            cipher.init(Cipher.DECRYPT_MODE, key);
            result = cipher.doFinal(result);
            System.out.println("jdk aes desrypt : " + new String(result));
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

}

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