AES，DES加密與解密

import com.sun.org.apache.xml.internal.security.utils.Base64;
        import javax.crypto.Cipher;
        import javax.crypto.SecretKey;
        import javax.crypto.spec.IvParameterSpec;
        import javax.crypto.spec.SecretKeySpec;

public class Main {
    //算法/模式/填充
    public static final String TRANSFORMATION_AES = "AES/CBC/PKCS5Padding";
    public static final String TRANSFORMATION_DES = "DES/CBC/PKCS5Padding";
    //算法
    public static final String ALGORITHM_AES = "AES";
    public static final String ALGORITHM_DES = "DES";

    public static void main(String[] args) {
        String input = "abcd1234";
        String key8 = "12345678";
        String key16 = "1234567890123456";
        System.out.println("原   文："+input);

        String enString = encrypt(input,key8,TRANSFORMATION_DES,ALGORITHM_DES);
        System.out.println("DES加密："+enString);
        String deString = decrypt(enString, key8,TRANSFORMATION_DES,ALGORITHM_DES);
        System.out.println("DES解密："+deString);

        enString = encrypt(input,key16,TRANSFORMATION_AES,ALGORITHM_AES);
        System.out.println("AES加密："+enString);
        deString = decrypt(enString, key16,TRANSFORMATION_AES,ALGORITHM_AES);
        System.out.println("AES解密："+deString);

        enString = encrypt_AES_ECB_PKCS5Padding(input,key16);
        System.out.println("AES加密："+enString);
        deString = decrypt_AES_ECB_PKCS5Padding(enString, key16);
        System.out.println("AES解密："+deString);

    }

    public static String encrypt(String input,String key,String transformation,String algorithm) {
        byte[] enResult = null;
        try {
            Cipher cipher = Cipher.getInstance(transformation);

            SecretKey secretKey = new SecretKeySpec(key.getBytes(),algorithm);

            IvParameterSpec iv = new IvParameterSpec(key.getBytes());

            cipher.init(Cipher.ENCRYPT_MODE, secretKey,iv);
            enResult = cipher.doFinal(input.getBytes());
        } catch (Exception e) {

        }
        return Base64.encode(enResult);
    }
    public static String decrypt(String input,String key,String transformation,String algorithm){
        byte[] deResult = null;
        try {
            Cipher cipher = Cipher.getInstance(transformation);

            SecretKey secretKey = new SecretKeySpec(key.getBytes(),algorithm);

            IvParameterSpec iv = new IvParameterSpec(key.getBytes());

            cipher.init(Cipher.DECRYPT_MODE, secretKey,iv);
            deResult = cipher.doFinal(Base64.decode(input));
        } catch (Exception e) {
            e.printStackTrace();
        }
        return new String(deResult);
    }
    public static String encrypt_AES_ECB_PKCS5Padding (String input,String key) {
        byte[] enResult = null;
        try {
            Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
            SecretKey secretKey = new SecretKeySpec(key.getBytes(),"AES");
            cipher.init(Cipher.ENCRYPT_MODE, secretKey);
            enResult = cipher.doFinal(input.getBytes());
        } catch (Exception e) {

        }
        return Base64.encode(enResult);
    }
    public static String decrypt_AES_ECB_PKCS5Padding (String input,String key) {
        byte[] deResult = null;
        try {
            Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
            SecretKey secretKey = new SecretKeySpec(key.getBytes(),"AES");
            cipher.init(Cipher.DECRYPT_MODE, secretKey);
            deResult = cipher.doFinal(Base64.decode(input));
        } catch (Exception e) {

        }
        return new String(deResult);
    }
}